{"id":1391,"date":"2025-12-05T05:38:01","date_gmt":"2025-12-05T05:38:01","guid":{"rendered":"https:\/\/hycuttingtools.com\/?p=1391"},"modified":"2026-09-14T15:18:37","modified_gmt":"2026-09-14T15:18:37","slug":"cnc-insert-selection-guide","status":"publish","type":"post","link":"https:\/\/hycuttingtools.com\/ko\/cnc-insert-selection-guide\/","title":{"rendered":"How to Choose a CNC Insert: Shape, Grade and Chipbreaker Guide"},"content":{"rendered":"<p><!--\nWORDPRESS FINAL CLEAN TYPOGRAPHY VERSION\n\nNo new CSS is required.\n\nThis version:\n- uses your existing hanyang-blog-public.css for normal body text, headings, CTA, FAQ and links;\n- removes the scattered inline font sizes\/weights that made the article look inconsistent;\n- keeps only necessary inline layout\/color styles;\n- keeps special sizes only for infographic elements (CNMG tokens, ISO P\/M\/K\/N\/S\/H, timeline numbers, checkmarks);\n- keeps all real tables at one consistent 14px typography size.\n\nPaste everything from \n\n<article> to <\/article>\n\n into ONE WordPress Custom HTML block.\n--><\/p>\n<article class=\"hy-blog-article\" style=\"width:100%;max-width:920px;margin:0 auto;color:#203746;\">\n<div class=\"hy-lead\" style=\"margin:0 0 26px;padding:22px 24px 19px;background:#eef7fc;border:1px solid #d5e8f3;border-left:5px solid #1684c5;border-radius:0 10px 10px 0;box-shadow:none;\">\n<p style=\"margin-top:0;margin-bottom:14px;\">A turning insert can match the required shape and size and still be wrong. The operation, holder, chipbreaker, grade and cutting conditions all affect the result.<\/p>\n<p style=\"margin-top:0;margin-bottom:14px;\">\uc774 <strong>CNC insert selection guide<\/strong> explains how to choose turning inserts and review a replacement. A complete code or clear photo can begin a review\u2014but cannot prove equivalence.<\/p>\n<p style=\"margin-top:0;padding-top:.8rem!important;border-top:1px solid #d7e4ec;color:#536b79;margin-bottom:14px;\"><strong>Scope:<\/strong> External turning, facing and profiling. Milling, drilling, grooving and threading inserts use different selection systems.<\/p>\n<\/div>\n<nav aria-label=\"Table of contents\" class=\"hy-toc\" style=\"margin:0 0 28px;padding:20px 22px 17px;background:#fff;border:1px solid #dbe7ee;border-radius:11px;box-shadow:0 6px 18px rgba(18,58,88,.04);\">\n<div class=\"hy-toc-title\" style=\"margin-bottom:10px;color:#0c3554;\">\ubaa9\ucc28<\/div>\n<ol>\n<li style=\"margin-bottom:6px;\"><a href=\"#quick-selection\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Quick selection checklist<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#operation\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Define the turning operation<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#iso-code\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Read the ISO insert code<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#shape\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Choose insert shape<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#clearance\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Positive vs negative inserts<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#nose-radius\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Nose radius and wiper geometry<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#chipbreaker\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Select the chipbreaker<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#grade\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Material group, grade and coating<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#holder\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Check holder compatibility<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#replacement\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Review a replacement model<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#testing\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Test before approval<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#mistakes\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Seven costly mistakes<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#rfq\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Prepare a quote-ready inquiry<\/a><\/li>\n<li style=\"margin-bottom:6px;\"><a href=\"#faq\" style=\"color:#315269;text-decoration:none;text-underline-offset:2px;\">Frequently asked questions<\/a><\/li>\n<\/ol>\n<\/nav>\n<section id=\"quick-selection\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">CNC Insert Selection Guide: Quick Checklist<\/h2>\n<p class=\"hy-section-note\" style=\"margin-top:0;margin-bottom:14px;margin:6px 0 14px;padding:10px 12px;background:#f5f9fb;border-left:3px solid #5ca7cf;border-radius:0 6px 6px 0;color:#496270;\">Use this screening sequence to find missing information. Final selection must fit the holder and the manufacturer\u2019s application range.<\/p>\n<div aria-label=\"CNC insert selection table 1\" class=\"hy-table-wrap\" role=\"region\" style=\"margin:14px 0 8px;border:1px solid #d8e4eb;border-radius:10px;background:#fff;box-shadow:none;overflow-x:auto;\" tabindex=\"0\">\n<table class=\"hy-table\" style=\"width:100%;min-width:700px;margin:0;font-size:14px;line-height:1.5;\">\n<caption class=\"hy-sr-only\">Quick insert checks<\/caption>\n<thead>\n<tr>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Decision<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Starting direction<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Why it matters<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Verify before selection<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Operation<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Separate roughing, medium turning, finishing and profiling<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Each requires different edge strength and chip control<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">External\/internal, facing\/profile, allowance and cut direction<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Insert shape<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Use the strongest shape that can still reach the feature<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Included angle affects edge support and accessibility<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Toolholder, entering angle, shoulder and profile clearance<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Clearance<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Compare zero-clearance and positive-clearance systems<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Changes edge economy, cutting force and holder design<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Machine power, workpiece rigidity and pocket compatibility<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Nose radius<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Balance edge strength against cutting force and detail access<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Influences feed capability, finish and chatter risk<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Feed, stock allowance, part rigidity and finish target<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Chipbreaker<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Select from material, feed and depth-of-cut ranges<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">A chipbreaker only works inside an application window<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Continuous\/interrupted cut, coolant and chip form<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">\ub4f1\uae09<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Start with ISO material group, then choose toughness\/wear balance<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Substrate, coating and edge preparation work together<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Material grade, hardness, speed, scale and interruption<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"hy-table-note\" style=\"margin-top:0;margin-bottom:14px;margin:3px 2px 16px;color:#71828d;\">Swipe to view all columns.<\/p>\n<\/section>\n<section id=\"operation\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">1. Define the Turning Operation First<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">Start with the cut the edge must perform. Roughing commonly needs edge support and toughness; profiling needs access to shoulders and contours. Finishing requires feed, nose radius, edge condition and surface target to work together.<\/p>\n<p style=\"margin-top:0;margin-bottom:14px;\">Record external or internal turning, longitudinal cutting or facing, and continuous or interrupted engagement. Confirm depth, feed and stock variation. A material name alone cannot distinguish a stable finish cut from interrupted roughing.<\/p>\n<\/section>\n<section id=\"iso-code\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">2. How to Read an ISO Turning Insert Code<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">A complete ordering designation should be read in layers. The standardized base code describes the insert body and dimensions; the following geometry and grade codes are normally defined by the individual manufacturer.<\/p>\n<div style=\"display:flex;flex-wrap:wrap;gap:12px;margin:20px 0 24px;\">\n<div style=\"flex:1 1 240px;min-width:0;padding:17px;background:#fff;border:1px solid #d9e5ec;border-top:4px solid #1684c5;border-radius:10px;\">\n<span style=\"display:block;margin-bottom:7px;color:#1684c5;text-transform:uppercase;font-size:11px;font-weight:800;line-height:1.3;letter-spacing:.07em;\">Layer 1<\/span><br \/>\n<strong style=\"display:block;margin-bottom:7px;color:#153d59;\">ISO base designation<\/strong><\/p>\n<p style=\"margin:0!important;color:#526b79;margin-top:0;margin-bottom:14px;font-size:14px;line-height:1.5;\">Example: <b>CNMG 120408<\/b>. Identifies shape, clearance, tolerance, configuration and dimensional codes.<\/p>\n<\/div>\n<div style=\"flex:1 1 240px;min-width:0;padding:17px;background:#fff;border:1px solid #d9e5ec;border-top:4px solid #4d8eaf;border-radius:10px;\">\n<span style=\"display:block;margin-bottom:7px;color:#1684c5;text-transform:uppercase;font-size:11px;font-weight:800;line-height:1.3;letter-spacing:.07em;\">Layer 2<\/span><br \/>\n<strong style=\"display:block;margin-bottom:7px;color:#153d59;\">Geometry or chipbreaker<\/strong><\/p>\n<p style=\"margin:0!important;color:#526b79;margin-top:0;margin-bottom:14px;font-size:14px;line-height:1.5;\">Examples include <b>PM, MF, MM<\/b> or other suffixes. Meanings are manufacturer-specific.<\/p>\n<\/div>\n<div style=\"flex:1 1 240px;min-width:0;padding:17px;background:#fff;border:1px solid #d9e5ec;border-top:4px solid #d38a22;border-radius:10px;\">\n<span style=\"display:block;margin-bottom:7px;color:#1684c5;text-transform:uppercase;font-size:11px;font-weight:800;line-height:1.3;letter-spacing:.07em;\">Layer 3<\/span><br \/>\n<strong style=\"display:block;margin-bottom:7px;color:#153d59;\">Cutting-material grade<\/strong><\/p>\n<p style=\"margin:0!important;color:#526b79;margin-top:0;margin-bottom:14px;font-size:14px;line-height:1.5;\">A separate supplier code identifies substrate, coating and application positioning.<\/p>\n<\/div>\n<\/div>\n<div style=\"width:100%;margin:24px 0 30px;padding:25px;background:#f8fbfd;border:1px solid #d5e4ed;border-radius:14px;box-sizing:border-box;\">\n<div style=\"margin:0 0 20px;color:#0c3554;text-align:center;\">CNMG 120408 \u2014 Read the Code from Left to Right<\/div>\n<div style=\"display:flex;flex-wrap:wrap;gap:18px;\">\n<div style=\"flex:1 1 420px;min-width:0;padding:18px;background:#fff;border:1px solid #dce7ed;border-radius:12px;\">\n<div style=\"margin-bottom:12px;color:#637986;text-transform:uppercase;text-align:center;font-size:12px;font-weight:800;letter-spacing:.08em;line-height:1.3;\">Insert identity<\/div>\n<div style=\"display:flex;gap:7px;margin-bottom:12px;\">\n<span style=\"flex:1;display:flex;align-items:center;justify-content:center;min-height:58px;background:#0d3d5e;border-radius:7px;color:#fff;font-size:27px;font-weight:800;line-height:1;\">C<\/span><br \/>\n<span style=\"flex:1;display:flex;align-items:center;justify-content:center;min-height:58px;background:#14678f;border-radius:7px;color:#fff;font-size:27px;font-weight:800;line-height:1;\">N<\/span><br \/>\n<span style=\"flex:1;display:flex;align-items:center;justify-content:center;min-height:58px;background:#1684c5;border-radius:7px;color:#fff;font-size:27px;font-weight:800;line-height:1;\">M<\/span><br \/>\n<span style=\"flex:1;display:flex;align-items:center;justify-content:center;min-height:58px;background:#4d8eaf;border-radius:7px;color:#fff;font-size:27px;font-weight:800;line-height:1;\">G<\/span>\n<\/div>\n<div style=\"display:flex;flex-direction:column;gap:8px;\">\n<div style=\"display:flex;gap:10px;align-items:center;padding:9px 10px;background:#f5f9fb;border-radius:7px;color:#496270;font-size:14px;line-height:1.5;\"><strong style=\"flex:0 0 42px;display:flex;align-items:center;justify-content:center;min-height:27px;background:#e1f0f8;border-radius:5px;color:#0d5f8b;font-size:14px;font-weight:800;line-height:1;\">C<\/strong><span><b>Shape:<\/b> 80\u00b0 rhombic<\/span><\/div>\n<div style=\"display:flex;gap:10px;align-items:center;padding:9px 10px;background:#f5f9fb;border-radius:7px;color:#496270;font-size:14px;line-height:1.5;\"><strong style=\"flex:0 0 42px;display:flex;align-items:center;justify-content:center;min-height:27px;background:#e1f0f8;border-radius:5px;color:#0d5f8b;font-size:14px;font-weight:800;line-height:1;\">N<\/strong><span><b>Clearance:<\/b> 0\u00b0 normal clearance<\/span><\/div>\n<div style=\"display:flex;gap:10px;align-items:center;padding:9px 10px;background:#f5f9fb;border-radius:7px;color:#496270;font-size:14px;line-height:1.5;\"><strong style=\"flex:0 0 42px;display:flex;align-items:center;justify-content:center;min-height:27px;background:#e1f0f8;border-radius:5px;color:#0d5f8b;font-size:14px;font-weight:800;line-height:1;\">M<\/strong><span><b>\uad00\uc6a9:<\/b> dimensional tolerance class<\/span><\/div>\n<div style=\"display:flex;gap:10px;align-items:center;padding:9px 10px;background:#f5f9fb;border-radius:7px;color:#496270;font-size:14px;line-height:1.5;\"><strong style=\"flex:0 0 42px;display:flex;align-items:center;justify-content:center;min-height:27px;background:#e1f0f8;border-radius:5px;color:#0d5f8b;font-size:14px;font-weight:800;line-height:1;\">G<\/strong><span><b>\uc720\ud615:<\/b> chipbreaker and\/or hole configuration<\/span><\/div>\n<\/div>\n<\/div>\n<div style=\"flex:1 1 330px;min-width:0;padding:18px;background:#fff;border:1px solid #dce7ed;border-radius:12px;\">\n<div style=\"margin-bottom:12px;color:#637986;text-transform:uppercase;text-align:center;font-size:12px;font-weight:800;letter-spacing:.08em;line-height:1.3;\">Metric dimensional codes<\/div>\n<div style=\"display:flex;gap:7px;margin-bottom:12px;\">\n<span style=\"flex:1;display:flex;align-items:center;justify-content:center;min-height:58px;background:#0d3d5e;border-radius:7px;color:#fff;font-size:27px;font-weight:800;line-height:1;\">12<\/span><br \/>\n<span style=\"flex:1;display:flex;align-items:center;justify-content:center;min-height:58px;background:#14678f;border-radius:7px;color:#fff;font-size:27px;font-weight:800;line-height:1;\">04<\/span><br \/>\n<span style=\"flex:1;display:flex;align-items:center;justify-content:center;min-height:58px;background:#1684c5;border-radius:7px;color:#fff;font-size:27px;font-weight:800;line-height:1;\">08<\/span>\n<\/div>\n<div style=\"display:flex;flex-direction:column;gap:8px;\">\n<div style=\"display:flex;gap:10px;align-items:center;padding:9px 10px;background:#f5f9fb;border-radius:7px;color:#496270;font-size:14px;line-height:1.5;\"><strong style=\"flex:0 0 42px;display:flex;align-items:center;justify-content:center;min-height:27px;background:#e1f0f8;border-radius:5px;color:#0d5f8b;font-size:14px;font-weight:800;line-height:1;\">12<\/strong><span><b>Size:<\/b> cutting-edge-length code<\/span><\/div>\n<div style=\"display:flex;gap:10px;align-items:center;padding:9px 10px;background:#f5f9fb;border-radius:7px;color:#496270;font-size:14px;line-height:1.5;\"><strong style=\"flex:0 0 42px;display:flex;align-items:center;justify-content:center;min-height:27px;background:#e1f0f8;border-radius:5px;color:#0d5f8b;font-size:14px;font-weight:800;line-height:1;\">04<\/strong><span><b>Thickness:<\/b> standardized thickness code<\/span><\/div>\n<div style=\"display:flex;gap:10px;align-items:center;padding:9px 10px;background:#f5f9fb;border-radius:7px;color:#496270;font-size:14px;line-height:1.5;\"><strong style=\"flex:0 0 42px;display:flex;align-items:center;justify-content:center;min-height:27px;background:#e1f0f8;border-radius:5px;color:#0d5f8b;font-size:14px;font-weight:800;line-height:1;\">08<\/strong><span><b>Radius:<\/b> 0.8 mm nose radius in this example<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"margin:18px 0 0;padding:14px 16px;background:#fff7e8;border-left:4px solid #d38a22;border-radius:0 8px 8px 0;color:#5d4a2b;font-size:14px;line-height:1.5;\"><strong>Still missing:<\/strong> The base code does not fully identify the manufacturer-specific chipbreaker, carbide grade, coating or edge preparation.<\/div>\n<\/div>\n<h3 style=\"margin:20px 0 8px;color:#123a58;\">Common Letters in the First Four Positions<\/h3>\n<div style=\"display:flex;flex-wrap:wrap;gap:13px;margin:18px 0 25px;\">\n<div style=\"flex:1 1 360px;min-width:0;padding:18px;background:#f7fafc;border:1px solid #dce7ed;border-radius:10px;\">\n<strong style=\"display:block;margin-bottom:9px;color:#123a58;\">1st letter \u2014 insert shape<\/strong><\/p>\n<p style=\"margin:0!important;color:#496270;margin-top:0;margin-bottom:14px;font-size:14px;line-height:1.5;\"><b>C<\/b> 80\u00b0 rhombic \u00b7 <b>D<\/b> 55\u00b0 rhombic \u00b7 <b>V<\/b> 35\u00b0 rhombic \u00b7 <b>W<\/b> 80\u00b0 trigon \u00b7 <b>S<\/b> square \u00b7 <b>T<\/b> triangle \u00b7 <b>R<\/b> round.<\/p>\n<\/div>\n<div style=\"flex:1 1 360px;min-width:0;padding:18px;background:#f7fafc;border:1px solid #dce7ed;border-radius:10px;\">\n<strong style=\"display:block;margin-bottom:9px;color:#123a58;\">2nd letter \u2014 normal clearance<\/strong><\/p>\n<p style=\"margin:0!important;color:#496270;margin-top:0;margin-bottom:14px;font-size:14px;line-height:1.5;\"><b>N<\/b> 0\u00b0 \u00b7 <b>C<\/b> 7\u00b0 \u00b7 <b>P<\/b> 11\u00b0. Other standardized clearance codes also exist. This position does not describe workpiece material.<\/p>\n<\/div>\n<div style=\"flex:1 1 360px;min-width:0;padding:18px;background:#f7fafc;border:1px solid #dce7ed;border-radius:10px;\">\n<strong style=\"display:block;margin-bottom:9px;color:#123a58;\">3rd letter \u2014 tolerance class<\/strong><\/p>\n<p style=\"margin:0!important;color:#496270;margin-top:0;margin-bottom:14px;font-size:14px;line-height:1.5;\">The letter represents a tolerance combination covering dimensions such as inscribed circle, thickness and nose height. In <b>CNMG<\/b>, M means a tolerance class\u2014not medium machining or ISO M stainless steel.<\/p>\n<\/div>\n<div style=\"flex:1 1 360px;min-width:0;padding:18px;background:#f7fafc;border:1px solid #dce7ed;border-radius:10px;\">\n<strong style=\"display:block;margin-bottom:9px;color:#123a58;\">4th letter \u2014 insert configuration<\/strong><\/p>\n<p style=\"margin:0!important;color:#496270;margin-top:0;margin-bottom:14px;font-size:14px;line-height:1.5;\">This position describes features such as the hole and chipbreaker arrangement. Its meaning must be read together with the preceding clearance code and the manufacturer\u2019s dimensional drawing.<\/p>\n<\/div>\n<\/div>\n<h3 style=\"margin:20px 0 8px;color:#123a58;\">How the Numeric Part Works<\/h3>\n<p style=\"margin-top:0;margin-bottom:14px;\">In the metric system, the first pair is a cutting-edge-length code, the second identifies thickness and the third identifies nose radius. The numbers are codes\u2014not always the literal dimension. For example, a common <strong>CNMG 120408<\/strong> has a 12.70 mm inscribed circle, about 4.76 mm thickness and a 0.8 mm nose radius; the manufacturer\u2019s drawing remains the final dimensional reference. Codes may also contain a letter, as in <strong>DCMT 11T304<\/strong>, so \u201cT3\u201d must be checked in the relevant table rather than read as 3 mm.<\/p>\n<h3 style=\"margin:20px 0 8px;color:#123a58;\">Examples from Common Turning-Insert Families<\/h3>\n<ul style=\"margin-top:0;margin-bottom:16px;padding-left:22px;\">\n<li style=\"margin-bottom:6px;\"><strong>WNMG 080408:<\/strong> W trigon shape, 0\u00b0 clearance, M tolerance, G configuration and a 0.8 mm nose-radius code.<\/li>\n<li style=\"margin-bottom:6px;\"><strong>CCMT 060204:<\/strong> C 80\u00b0 rhombic shape with 7\u00b0 normal clearance and a 0.4 mm nose-radius code.<\/li>\n<li style=\"margin-bottom:6px;\"><strong>DCMT 11T304:<\/strong> D 55\u00b0 rhombic shape with 7\u00b0 clearance; the alphanumeric thickness code requires a catalog lookup.<\/li>\n<li style=\"margin-bottom:6px;\"><strong>VNMG 160404:<\/strong> V 35\u00b0 rhombic shape, 0\u00b0 clearance and a 0.4 mm nose-radius code.<\/li>\n<\/ul>\n<p style=\"margin-top:0;margin-bottom:14px;\">The base code helps verify physical identity, but it cannot establish performance equivalence. A full replacement request should include the original manufacturer, complete suffix, grade code and holder model. Mitsubishi Materials provides an official overview of the <a href=\"https:\/\/www.mmc-carbide.com\/permanent\/courses\/85\/insert-turning-identification-code.html\" rel=\"noopener\" style=\"text-underline-offset:2px;\" target=\"_blank\">turning insert identification system<\/a>.<\/p>\n<\/section>\n<aside aria-label=\"Model comparison call to action\" class=\"hy-cta\" style=\"margin:28px 0;padding:22px 24px;border-radius:10px;background:linear-gradient(120deg,#0c3654,#126d9e);box-shadow:0 8px 20px rgba(12,54,84,.14);\">\n<h3 style=\"margin-top:0!important;margin:0 0 8px;color:#fff!important;\">Have a Complete Insert Code or Product Photo?<\/h3>\n<p style=\"margin-top:0;margin-bottom:14px;margin:0 0 12px;color:#edf7fb;\">Send the current manufacturer, full designation, holder model and quantity. HY Tools can compare the model and dimensions, then list the details needed before testing.<\/p>\n<div class=\"hy-cta-actions\" style=\"display:flex;flex-wrap:wrap;gap:10px;\">\n<a class=\"hy-btn hy-btn-primary\" href=\"https:\/\/hycuttingtools.com\/ko\/contact\/\" style=\"min-height:38px;padding:8px 14px;border-radius:6px;\">Request a Model Review<\/a><br \/>\n<a class=\"hy-btn hy-btn-secondary\" href=\"https:\/\/wa.me\/8619042904292?text=Hello%20HY%20Tools%2C%20I%20would%20like%20to%20compare%20a%20turning%20insert%20model.\" rel=\"noopener\" style=\"min-height:38px;padding:8px 14px;border-radius:6px;\" target=\"_blank\">Send Details on WhatsApp<\/a>\n<\/div>\n<\/aside>\n<section id=\"shape\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">3. Choose the Insert Shape by Strength and Access<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">Use the strongest included angle that can still reach the feature. A broad corner provides more edge support; a narrow point reaches tighter profiles but is more vulnerable to overload.<\/p>\n<div aria-label=\"CNC insert selection table 3\" class=\"hy-table-wrap\" role=\"region\" style=\"margin:14px 0 8px;border:1px solid #d8e4eb;border-radius:10px;background:#fff;box-shadow:none;overflow-x:auto;\" tabindex=\"0\">\n<table class=\"hy-table\" style=\"width:100%;min-width:700px;margin:0;font-size:14px;line-height:1.5;\">\n<caption class=\"hy-sr-only\">Turning insert shapes<\/caption>\n<thead>\n<tr>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">\ubaa8\uc591<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Included angle<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Starting direction<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Main limitation<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">R \u2013 Round<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Continuous radius<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Strong edge and selected profiling\/roughing applications<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Entering angle changes with depth of cut<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">S \u2013 Square<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">90\u00b0<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Stable cuts where the holder and feature permit<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Limited access around profiles and shoulders<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">C \u2013 Rhombic<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">80\u00b0<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">General external turning and facing<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Less access than D or V shapes<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">W \u2013 Trigon<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">80\u00b0<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">General turning with multiple indexing positions<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Profile access depends on holder orientation<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">T \u2013 Triangle<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">60\u00b0<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Versatile turning depending on insert and holder design<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Lower corner support than 80\u00b0\/90\u00b0 shapes<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">D \u2013 Rhombic<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">55\u00b0<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Profiling and access around features<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Lower point strength than C<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">V \u2013 Rhombic<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">35\u00b0<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Fine profiling and restricted access<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Point is unsuitable for uncontrolled heavy loading<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"hy-table-note\" style=\"margin-top:0;margin-bottom:14px;margin:3px 2px 16px;color:#71828d;\">Swipe to view all columns.<\/p>\n<p style=\"margin-top:0;margin-bottom:14px;\">Shape is not selected from workpiece material alone. A stainless-steel job may use C, D, V or another shape depending on the feature and holder. For a product example, see the <a href=\"https:\/\/hycuttingtools.com\/ko\/%ec%a0%9c%ed%92%88\/vnmg-1604-carbide-turning-inserts-for-steel-and-stainless-steel\/\" style=\"text-underline-offset:2px;\">HY Tools VNMG 1604 turning insert range<\/a>; its 35\u00b0 point supports profiling access, but the complete application still determines the chipbreaker and grade.<\/p>\n<\/section>\n<section id=\"clearance\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">4. Positive vs Negative Turning Inserts<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">The second ISO letter identifies normal clearance. N means 0\u00b0 and is described as negative; C commonly represents 7\u00b0 and is positive. Negative-style systems often offer robust, double-sided edges. Positive-clearance inserts commonly reduce cutting force for internal turning, slender parts or lower-power setups.<\/p>\n<p style=\"margin-top:0;margin-bottom:14px;\">Clearance angle is not the same as effective rake. Top geometry and holder orientation also influence the cutting action, so check the complete insert-and-holder system.<\/p>\n<\/section>\n<section id=\"nose-radius\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">5. Select Nose Radius and Wiper Geometry<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">A larger nose radius generally increases corner strength and may support higher feed on a rigid setup, but can raise radial force and vibration risk. A smaller radius reduces force and improves detail access, with less edge support.<\/p>\n<div aria-label=\"CNC insert selection table 4\" class=\"hy-table-wrap\" role=\"region\" style=\"margin:14px 0 8px;border:1px solid #d8e4eb;border-radius:10px;background:#fff;box-shadow:none;overflow-x:auto;\" tabindex=\"0\">\n<table class=\"hy-table\" style=\"width:100%;min-width:700px;margin:0;font-size:14px;line-height:1.5;\">\n<caption class=\"hy-sr-only\">Nose radius selection<\/caption>\n<thead>\n<tr>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Condition<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Starting direction<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Verify<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Fine profile, low allowance or slender part<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Consider a smaller nose radius<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Edge strength, feed and minimum stock<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Stable general turning<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Use a radius that balances strength and surface requirement<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Machine load, chipbreaker range and finish<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Higher feed on a rigid setup<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Consider a larger radius or suitable wiper geometry<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Holder orientation and approved feed range<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Existing chatter<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Do not automatically increase radius<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Overhang, clamping, center height and entering angle first<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"hy-table-note\" style=\"margin-top:0;margin-bottom:14px;margin:3px 2px 16px;color:#71828d;\">Swipe to view all columns.<\/p>\n<p style=\"margin-top:0;margin-bottom:14px;\">A wiper geometry may improve finish at a given feed or permit higher feed while maintaining finish. It still requires correct orientation, rigidity and approved cutting data. See Seco\u2019s explanation of the <a href=\"https:\/\/www.secotools.com\/article\/the_geometry_factor_825130c\" rel=\"noopener\" style=\"text-underline-offset:2px;\" target=\"_blank\">relationship between geometry, feed and depth of cut<\/a>.<\/p>\n<\/section>\n<section id=\"chipbreaker\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">6. Select the Chipbreaker from Feed and Depth of Cut<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">Terms such as finishing, medium and roughing are useful starting categories, but the actual chipbreaker works inside a defined feed and depth-of-cut window. If the cut falls outside that window, chips may become long, cutting forces may rise or the edge may overload.<\/p>\n<ul style=\"margin-top:0;margin-bottom:16px;padding-left:22px;\">\n<li style=\"margin-bottom:6px;\">\n<strong>Finishing geometry:<\/strong> commonly designed for lower feeds and depths of cut, with a sharper cutting action.<\/li>\n<li style=\"margin-bottom:6px;\">\n<strong>Medium geometry:<\/strong> commonly balances chip control and edge strength across a broader operating area.<\/li>\n<li style=\"margin-bottom:6px;\">\n<strong>Roughing geometry:<\/strong> commonly provides stronger edge support and room for heavier chip formation.<\/li>\n<\/ul>\n<p style=\"margin-top:0;margin-bottom:14px;\">Suffixes such as PM, MM, MF or MR are supplier-specific\u2014not universal ISO chipbreaker standards. Mitsubishi\u2019s official <a href=\"https:\/\/data.mmc-carbide.com\/5916\/5839\/4873\/tec_insert_comparison_en-gl.pdf\" rel=\"noopener\" style=\"text-underline-offset:2px;\" target=\"_blank\">chipbreaker comparison table<\/a> shows that different manufacturers use different codes for similar cutting modes. A distributor should therefore request the original manufacturer and complete suffix, not only \u201cCNMG 120408 PM.\u201d<\/p>\n<\/section>\n<section id=\"grade\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">7. Match the Material Group, Grade and Coating<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">ISO P, M, K, N, S and H identify workpiece-material groups. They are not universal carbide-grade names. The actual insert grade combines a substrate, coating and often a defined edge preparation supplied under a manufacturer-specific code.<\/p>\n<div aria-label=\"ISO workpiece material groups for turning insert selection\" role=\"region\" style=\"width:100%;margin:22px 0 8px;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid #d7e4ec;border-radius:12px;background:#fff;box-sizing:border-box;\" tabindex=\"0\">\n<div style=\"min-width:800px;font-size:14px;line-height:1.45;\">\n<!-- Header --><\/p>\n<div style=\"display:grid;grid-template-columns:92px minmax(250px,.9fr) minmax(390px,1.5fr);background:#0f466c;color:#fff;font-size:14px;line-height:1.45;font-weight:700;\">\n<div style=\"padding:15px 16px;border-right:1px solid rgba(255,255,255,.65);font-size:14px;line-height:1.45;\">ISO<\/div>\n<div style=\"padding:15px 18px;border-right:1px solid rgba(255,255,255,.65);font-size:14px;line-height:1.45;\">Workpiece family<\/div>\n<div style=\"padding:15px 18px;font-size:14px;line-height:1.45;\">Selection priorities and checks<\/div>\n<\/div>\n<p><!-- P --><\/p>\n<div style=\"display:grid;grid-template-columns:92px minmax(250px,.9fr) minmax(390px,1.5fr);min-height:92px;border-bottom:1px solid #dce6ef;font-size:14px;line-height:1.45;\">\n<div style=\"display:flex;flex-direction:column;align-items:center;justify-content:center;padding:12px 8px;background:#197fa8;color:#fff;text-align:center;font-size:14px;line-height:1.45;\">\n<div style=\"font-size:31px;font-weight:800;line-height:1;\">P<\/div>\n<div style=\"margin-top:7px;text-transform:uppercase;font-size:10px;font-weight:800;line-height:1.15;letter-spacing:.035em;\">Steel<\/div>\n<\/div>\n<div style=\"display:flex;flex-direction:column;justify-content:center;gap:4px;padding:14px 18px;background:#fff;border-right:1px solid #e0e8ed;font-size:14px;line-height:1.45;\">\n<strong style=\"color:#173d58;font-size:14px;line-height:1.45;\">Steel<\/strong><br \/>\n<span style=\"color:#627785;font-size:14px;line-height:1.45;\">Carbon, alloy and tool steels<\/span>\n<\/div>\n<div style=\"display:flex;align-items:center;padding:14px 18px;background:#f8fafb;color:#435967;font-size:14px;line-height:1.45;\">\n<span style=\"font-size:14px;line-height:1.45;\"><strong style=\"color:#244b65;font-size:14px;line-height:1.45;\">Prioritize wear resistance and edge security.<\/strong> Confirm alloy, hardness, scale and continuous or interrupted cutting.<\/span>\n<\/div>\n<\/div>\n<p><!-- M --><\/p>\n<div style=\"display:grid;grid-template-columns:92px minmax(250px,.9fr) minmax(390px,1.5fr);min-height:92px;border-bottom:1px solid #dce6ef;font-size:14px;line-height:1.45;\">\n<div style=\"display:flex;flex-direction:column;align-items:center;justify-content:center;padding:12px 8px;background:#edcf00;color:#26333b;text-align:center;font-size:14px;line-height:1.45;\">\n<div style=\"font-size:31px;font-weight:800;line-height:1;\">M<\/div>\n<div style=\"margin-top:7px;text-transform:uppercase;font-size:10px;font-weight:800;line-height:1.15;letter-spacing:.035em;\">Stainless<\/div>\n<\/div>\n<div style=\"display:flex;flex-direction:column;justify-content:center;gap:4px;padding:14px 18px;background:#fff;border-right:1px solid #e0e8ed;font-size:14px;line-height:1.45;\">\n<strong style=\"color:#173d58;font-size:14px;line-height:1.45;\">\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8<\/strong><br \/>\n<span style=\"color:#627785;font-size:14px;line-height:1.45;\">Austenitic, duplex and other stainless families<\/span>\n<\/div>\n<div style=\"display:flex;align-items:center;padding:14px 18px;background:#f8fafb;color:#435967;font-size:14px;line-height:1.45;\">\n<span style=\"font-size:14px;line-height:1.45;\"><strong style=\"color:#244b65;font-size:14px;line-height:1.45;\">Control adhesion, heat and notch wear.<\/strong> Confirm stainless family, work hardening, coolant and setup stability.<\/span>\n<\/div>\n<\/div>\n<p><!-- K --><\/p>\n<div style=\"display:grid;grid-template-columns:92px minmax(250px,.9fr) minmax(390px,1.5fr);min-height:92px;border-bottom:1px solid #dce6ef;font-size:14px;line-height:1.45;\">\n<div style=\"display:flex;flex-direction:column;align-items:center;justify-content:center;padding:12px 8px;background:#cf3535;color:#fff;text-align:center;font-size:14px;line-height:1.45;\">\n<div style=\"font-size:31px;font-weight:800;line-height:1;\">K<\/div>\n<div style=\"margin-top:7px;text-transform:uppercase;font-size:10px;font-weight:800;line-height:1.15;letter-spacing:.035em;\">\uc8fc\ucca0<\/div>\n<\/div>\n<div style=\"display:flex;flex-direction:column;justify-content:center;gap:4px;padding:14px 18px;background:#fff;border-right:1px solid #e0e8ed;font-size:14px;line-height:1.45;\">\n<strong style=\"color:#173d58;font-size:14px;line-height:1.45;\">\uc8fc\ucca0<\/strong><br \/>\n<span style=\"color:#627785;font-size:14px;line-height:1.45;\">Grey, ductile and compacted graphite iron<\/span>\n<\/div>\n<div style=\"display:flex;align-items:center;padding:14px 18px;background:#f8fafb;color:#435967;font-size:14px;line-height:1.45;\">\n<span style=\"font-size:14px;line-height:1.45;\"><strong style=\"color:#244b65;font-size:14px;line-height:1.45;\">Balance abrasion resistance and edge security.<\/strong> Confirm cast-iron type, skin or scale and interruption.<\/span>\n<\/div>\n<\/div>\n<p><!-- N --><\/p>\n<div style=\"display:grid;grid-template-columns:92px minmax(250px,.9fr) minmax(390px,1.5fr);min-height:92px;border-bottom:1px solid #dce6ef;font-size:14px;line-height:1.45;\">\n<div style=\"display:flex;flex-direction:column;align-items:center;justify-content:center;padding:12px 8px;background:#2f8338;color:#fff;text-align:center;font-size:14px;line-height:1.45;\">\n<div style=\"font-size:31px;font-weight:800;line-height:1;\">N<\/div>\n<div style=\"margin-top:7px;text-transform:uppercase;font-size:10px;font-weight:800;line-height:1.15;letter-spacing:.035em;\">Non-Ferrous<\/div>\n<\/div>\n<div style=\"display:flex;flex-direction:column;justify-content:center;gap:4px;padding:14px 18px;background:#fff;border-right:1px solid #e0e8ed;font-size:14px;line-height:1.45;\">\n<strong style=\"color:#173d58;font-size:14px;line-height:1.45;\">Non-ferrous materials<\/strong><br \/>\n<span style=\"color:#627785;font-size:14px;line-height:1.45;\">Aluminum, copper, brass and selected composites<\/span>\n<\/div>\n<div style=\"display:flex;align-items:center;padding:14px 18px;background:#f8fafb;color:#435967;font-size:14px;line-height:1.45;\">\n<span style=\"font-size:14px;line-height:1.45;\"><strong style=\"color:#244b65;font-size:14px;line-height:1.45;\">Use a sharp, low-adhesion cutting solution.<\/strong> Confirm alloy, silicon content and surface-finish target.<\/span>\n<\/div>\n<\/div>\n<p><!-- S --><\/p>\n<div style=\"display:grid;grid-template-columns:92px minmax(250px,.9fr) minmax(390px,1.5fr);min-height:92px;border-bottom:1px solid #dce6ef;font-size:14px;line-height:1.45;\">\n<div style=\"display:flex;flex-direction:column;align-items:center;justify-content:center;padding:12px 8px;background:#bf6219;color:#fff;text-align:center;font-size:14px;line-height:1.45;\">\n<div style=\"font-size:31px;font-weight:800;line-height:1;\">S<\/div>\n<div style=\"margin-top:7px;text-transform:uppercase;font-size:10px;font-weight:800;line-height:1.15;letter-spacing:.035em;\">HRSA \/ Ti<\/div>\n<\/div>\n<div style=\"display:flex;flex-direction:column;justify-content:center;gap:4px;padding:14px 18px;background:#fff;border-right:1px solid #e0e8ed;font-size:14px;line-height:1.45;\">\n<strong style=\"color:#173d58;font-size:14px;line-height:1.45;\">HRSA and titanium<\/strong><br \/>\n<span style=\"color:#627785;font-size:14px;line-height:1.45;\">Nickel-, cobalt- and titanium-based alloys<\/span>\n<\/div>\n<div style=\"display:flex;align-items:center;padding:14px 18px;background:#f8fafb;color:#435967;font-size:14px;line-height:1.45;\">\n<span style=\"font-size:14px;line-height:1.45;\"><strong style=\"color:#244b65;font-size:14px;line-height:1.45;\">Control heat concentration and notch wear.<\/strong> Confirm the exact alloy, coolant delivery and engagement time.<\/span>\n<\/div>\n<\/div>\n<p><!-- H --><\/p>\n<div style=\"display:grid;grid-template-columns:92px minmax(250px,.9fr) minmax(390px,1.5fr);min-height:92px;font-size:14px;line-height:1.45;\">\n<div style=\"display:flex;flex-direction:column;align-items:center;justify-content:center;padding:12px 8px;background:#687177;color:#fff;text-align:center;font-size:14px;line-height:1.45;\">\n<div style=\"font-size:31px;font-weight:800;line-height:1;\">H<\/div>\n<div style=\"margin-top:7px;text-transform:uppercase;font-size:10px;font-weight:800;line-height:1.15;letter-spacing:.035em;\">Hardened<\/div>\n<\/div>\n<div style=\"display:flex;flex-direction:column;justify-content:center;gap:4px;padding:14px 18px;background:#fff;border-right:1px solid #e0e8ed;font-size:14px;line-height:1.45;\">\n<strong style=\"color:#173d58;font-size:14px;line-height:1.45;\">Hardened materials<\/strong><br \/>\n<span style=\"color:#627785;font-size:14px;line-height:1.45;\">Hardened steel and hardened cast iron<\/span>\n<\/div>\n<div style=\"display:flex;align-items:center;padding:14px 18px;background:#f8fafb;color:#435967;font-size:14px;line-height:1.45;\">\n<span style=\"font-size:14px;line-height:1.45;\"><strong style=\"color:#244b65;font-size:14px;line-height:1.45;\">Prioritize wear resistance and process stability.<\/strong> Confirm actual hardness, cut continuity, tolerance and finish.<\/span>\n<\/div>\n<\/div>\n<p><!-- Bottom note --><\/p>\n<div style=\"padding:12px 16px;background:#eef6fa;border-top:1px solid #d7e4ec;color:#496270;font-size:14px;line-height:1.45;\">\n<strong style=\"color:#244b65;font-size:14px;line-height:1.45;\">Do not select from the letter alone.<\/strong><br \/>\n        The ISO group is a starting classification\u2014not a manufacturer grade or a universal hardness range.\n      <\/div>\n<\/div>\n<\/div>\n<p style=\"display:none;margin-top:0;margin-bottom:14px;\">Swipe to view all columns.<\/p>\n<p style=\"margin-top:0;margin-bottom:14px;\">Coated cemented carbide is widely used. Cermet may suit selected finishing, ceramic may suit stable high-speed cuts, PCD is used in selected non-ferrous\/composite applications, and PCBN is used in many hardened-ferrous applications. Seco\u2019s official <a href=\"https:\/\/www.secotools.com\/article\/a_guide_to_turning_grades__materials_and_solutions?language=en\" rel=\"noopener\" style=\"text-underline-offset:2px;\" target=\"_blank\">turning-grade guide<\/a> explains the wear-resistance\/toughness trade-off and why no grade suits every application.<\/p>\n<p style=\"margin-top:0;margin-bottom:14px;\">For stainless steel, do not select from M alone. Confirm the stainless family, condition, work hardening, coolant and cut continuity. See the HY Tools guide to <a href=\"https:\/\/hycuttingtools.com\/ko\/machining-stainless-steel\/\" style=\"text-underline-offset:2px;\">machining stainless steel<\/a>.<\/p>\n<\/section>\n<section id=\"holder\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">8. Confirm Toolholder and Pocket Compatibility<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">An insert cannot be approved independently of its holder. Confirm shape, clearance, tolerance, size, thickness, hole\/clamping style and handedness. Then check entering angle, pocket condition, seat, clamp and center height. Physical fit alone does not prove correct clearance or cutting direction; use the holder manufacturer\u2019s compatibility list.<\/p>\n<\/section>\n<section id=\"replacement\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">9. How to Review an Existing Insert Model<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">If a customer sends \u201cCNMG 120408-PM\u201d and requests an equivalent, first identify the original manufacturer; the suffix is not universal. Then follow this sequence:<\/p>\n<div style=\"margin:22px 0 28px;\">\n<div style=\"display:flex;gap:14px;align-items:stretch;margin-bottom:0;\">\n<div style=\"width:44px;flex:0 0 44px;display:flex;flex-direction:column;align-items:center;\">\n<span style=\"display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:5px solid #e4f2f9;border-radius:50%;background:#1178ad;color:#fff;font-size:15px;font-weight:800;line-height:1;\">1<\/span><br \/>\n<span style=\"width:2px;flex:1;min-height:20px;background:#c9e0ec;\"><\/span>\n<\/div>\n<div style=\"flex:1;min-width:0;margin-bottom:18px;padding:12px 14px;background:#f7fafc;border:1px solid #dce7ed;border-radius:11px;\">\n<strong style=\"display:block;margin-bottom:6px;color:#123a58;\">Identify<\/strong><\/p>\n<div>Manufacturer, complete code, grade, box label, catalog page and photos of both faces<\/div>\n<p><small style=\"display:block;margin-top:4px;color:#677c88;\">Supplier suffixes cannot be interpreted without their original catalog<\/small>\n<\/div>\n<\/div>\n<div style=\"display:flex;gap:14px;align-items:stretch;\">\n<div style=\"width:44px;flex:0 0 44px;display:flex;flex-direction:column;align-items:center;\">\n<span style=\"display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:5px solid #e4f2f9;border-radius:50%;background:#1178ad;color:#fff;font-size:15px;font-weight:800;line-height:1;\">2<\/span><br \/>\n<span style=\"width:2px;flex:1;min-height:20px;background:#c9e0ec;\"><\/span>\n<\/div>\n<div style=\"flex:1;min-width:0;margin-bottom:18px;padding:12px 14px;background:#f7fafc;border:1px solid #dce7ed;border-radius:11px;\">\n<strong style=\"display:block;margin-bottom:6px;color:#123a58;\">Check compatibility<\/strong><\/p>\n<div>Holder code, insert seat, clamp, dimensions, nose radius and usable edges<\/div>\n<p><small style=\"display:block;margin-top:4px;color:#677c88;\">A similar-looking insert may not seat or cut correctly<\/small>\n<\/div>\n<\/div>\n<div style=\"display:flex;gap:14px;align-items:stretch;\">\n<div style=\"width:44px;flex:0 0 44px;display:flex;flex-direction:column;align-items:center;\">\n<span style=\"display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:5px solid #e4f2f9;border-radius:50%;background:#1178ad;color:#fff;font-size:15px;font-weight:800;line-height:1;\">3<\/span><br \/>\n<span style=\"width:2px;flex:1;min-height:20px;background:#c9e0ec;\"><\/span>\n<\/div>\n<div style=\"flex:1;min-width:0;margin-bottom:18px;padding:12px 14px;background:#f7fafc;border:1px solid #dce7ed;border-radius:11px;\">\n<strong style=\"display:block;margin-bottom:6px;color:#123a58;\">Define the application<\/strong><\/p>\n<div>Material, hardness, operation, cut continuity, feed, depth, speed, coolant and failure mode<\/div>\n<p><small style=\"display:block;margin-top:4px;color:#677c88;\">Geometry and grade must match actual cutting conditions<\/small>\n<\/div>\n<\/div>\n<div style=\"display:flex;gap:14px;align-items:stretch;\">\n<div style=\"width:44px;flex:0 0 44px;display:flex;flex-direction:column;align-items:center;\">\n<span style=\"display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:5px solid #e4f2f9;border-radius:50%;background:#1178ad;color:#fff;font-size:15px;font-weight:800;line-height:1;\">4<\/span><br \/>\n<span style=\"width:2px;flex:1;min-height:20px;background:#c9e0ec;\"><\/span>\n<\/div>\n<div style=\"flex:1;min-width:0;margin-bottom:18px;padding:12px 14px;background:#f7fafc;border:1px solid #dce7ed;border-radius:11px;\">\n<strong style=\"display:block;margin-bottom:6px;color:#123a58;\">Select a candidate<\/strong><\/p>\n<div>Compare geometry and grade positioning<\/div>\n<p><small style=\"display:block;margin-top:4px;color:#677c88;\">Appearance or color cannot establish equivalence<\/small>\n<\/div>\n<\/div>\n<div style=\"display:flex;gap:14px;align-items:stretch;\">\n<div style=\"width:44px;flex:0 0 44px;display:flex;flex-direction:column;align-items:center;\">\n<span style=\"display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:5px solid #e4f2f9;border-radius:50%;background:#1178ad;color:#fff;font-size:15px;font-weight:800;line-height:1;\">5<\/span>\n<\/div>\n<div style=\"flex:1;min-width:0;padding:12px 14px;background:#f7fafc;border:1px solid #dce7ed;border-radius:11px;\">\n<strong style=\"display:block;margin-bottom:6px;color:#123a58;\">Approve by test<\/strong><\/p>\n<div>Run a controlled sample trial before volume replacement<\/div>\n<p><small style=\"display:block;margin-top:4px;color:#677c88;\">Performance equivalence must be demonstrated in the application<\/small>\n<\/div>\n<\/div>\n<\/div>\n<p style=\"margin-top:0;margin-bottom:14px;\">A code, catalog page or photo can begin the comparison. Final equivalence requires application review and testing.<\/p>\n<\/section>\n<section id=\"testing\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">10. Test the Candidate Before Approval<\/h2>\n<p style=\"margin-top:0;margin-bottom:14px;\">Compare the current and candidate inserts under controlled conditions. Keep the machine, holder, workpiece batch, coolant, tool overhang and inspection method as consistent as practical. Start within the candidate supplier\u2019s recommended cutting range and record:<\/p>\n<ul style=\"margin-top:0;margin-bottom:16px;padding-left:22px;\">\n<li style=\"margin-bottom:6px;\">tool life per usable cutting edge;<\/li>\n<li style=\"margin-bottom:6px;\">dimensional drift and surface finish;<\/li>\n<li style=\"margin-bottom:6px;\">chip shape and evacuation;<\/li>\n<li style=\"margin-bottom:6px;\">flank wear, chipping, notching, deformation or built-up edge;<\/li>\n<li style=\"margin-bottom:6px;\">cycle time, indexing frequency and unexpected stoppages;<\/li>\n<li style=\"margin-bottom:6px;\">cost per accepted component\u2014not insert price alone.<\/li>\n<\/ul>\n<p style=\"margin-top:0;margin-bottom:14px;\">Diagnose the wear pattern before changing several variables. A tougher grade will not correct a damaged pocket, excessive overhang or unsuitable chipbreaker.<\/p>\n<\/section>\n<section id=\"mistakes\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">11. Seven Costly CNC Insert Selection Mistakes<\/h2>\n<div aria-label=\"Seven costly insert selection mistakes\" class=\"hy-table-wrap\" role=\"region\" style=\"margin:14px 0 8px;border:1px solid #d8e4eb;border-radius:10px;background:#fff;box-shadow:none;overflow-x:auto;\" tabindex=\"0\">\n<table class=\"hy-table\" style=\"width:100%;min-width:700px;margin:0;font-size:14px;line-height:1.5;\">\n<caption class=\"hy-sr-only\">Seven CNC insert selection mistakes and better approaches<\/caption>\n<thead>\n<tr>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Mistake<\/th>\n<th scope=\"col\" style=\"padding:11px 12px;background:#0f4b73;color:#fff;font-size:14px;font-weight:700;line-height:1.4;\">Better approach<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Choosing shape from material alone<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Shape must first fit the operation, profile and holder.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Treating P\/M\/K\/N\/S\/H as grade names<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">They identify workpiece-material groups; manufacturer grades are separate.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Assuming chipbreaker suffixes are universal<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">The same letters can mean different geometries across suppliers.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Matching only CNMG 120408<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">The dimensional code does not confirm chipbreaker, grade, coating or edge preparation.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Increasing nose radius to solve every finish problem<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">A larger radius can increase cutting force and chatter risk.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Ignoring holder and pocket condition<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Incorrect seating, clamp damage or center height can invalidate an insert comparison.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Approving a replacement by price or appearance<\/td>\n<td style=\"padding:11px 12px;vertical-align:top;font-size:14px;line-height:1.5;\">Compare usable edges, stability, wear and cost per accepted part in a controlled trial.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"hy-table-note\" style=\"margin-top:0;margin-bottom:14px;margin:3px 2px 16px;color:#71828d;\">Swipe to view all columns.<\/p>\n<\/section>\n<section id=\"rfq\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;\">12. Prepare a Quote-Ready Inquiry<\/h2>\n<div style=\"display:flex;flex-wrap:wrap;gap:14px!important;margin:18px 0 26px!important;width:100%;box-sizing:border-box;\">\n<div style=\"flex:1 1 360px;min-width:280px;background:#ffffff;border:1px solid #d7e4ec;border-top:6px solid #1684c5;border-radius:10px!important;padding:20px 22px 18px!important;box-sizing:border-box;\">\n<h3 style=\"margin-bottom:14px!important;margin:0 0 14px;color:#123a58;\">New Turning Application<\/h3>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Workpiece material and hardness<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">External\/internal, facing or profiling<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Roughing, medium or finishing<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Continuous or interrupted cut<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Holder model and entering angle<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Feed, depth, speed and coolant<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Finish, tolerance and quantity<\/span>\n<\/div>\n<\/div>\n<div style=\"flex:1 1 360px;min-width:280px;background:#ffffff;border:1px solid #d7e4ec;border-top:6px solid #4b7895;border-radius:10px!important;padding:20px 22px 18px!important;box-sizing:border-box;\">\n<h3 style=\"margin-bottom:14px!important;margin:0 0 14px;color:#123a58;\">Existing-Model Replacement<\/h3>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Current manufacturer and full code<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Grade and chipbreaker suffix<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Box label, catalog page or clear photos<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Toolholder model<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Current tool life or failure mode<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0 0 14px;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Required quantity and packaging<\/span>\n<\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px!important;margin:0;margin-bottom:9px!important;\">\n<span style=\"flex:0 0 20px;color:#1684c5;flex-basis:16px!important;font-size:18px;font-weight:800;line-height:1;\">\u2713<\/span><br \/>\n<span style=\"flex:1;min-width:0;color:#263746;\">Replacement target and sample plan<\/span>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<aside aria-label=\"Final inquiry call to action\" class=\"hy-cta\" style=\"margin:28px 0;padding:22px 24px;border-radius:10px;background:linear-gradient(120deg,#0c3654,#126d9e);box-shadow:0 8px 20px rgba(12,54,84,.14);\">\n<h3 style=\"margin-top:0!important;margin:0 0 8px;color:#fff!important;\">Send the Information You Already Have<\/h3>\n<p style=\"margin-top:0;margin-bottom:14px;margin:0 0 12px;color:#edf7fb;\">Start with the full insert code, material, operation and quantity\u2014or send a catalog page, drawing or clear photos. We will identify the missing information.<\/p>\n<div class=\"hy-cta-actions\" style=\"display:flex;flex-wrap:wrap;gap:10px;\">\n<a class=\"hy-btn hy-btn-primary\" href=\"https:\/\/hycuttingtools.com\/ko\/contact\/\" style=\"min-height:38px;padding:8px 14px;border-radius:6px;\">Request an Application Review<\/a><br \/>\n<a class=\"hy-btn hy-btn-secondary\" href=\"https:\/\/wa.me\/8619042904292?text=Hello%20HY%20Tools%2C%20I%20need%20help%20selecting%20or%20comparing%20turning%20inserts.\" rel=\"noopener\" style=\"min-height:38px;padding:8px 14px;border-radius:6px;\" target=\"_blank\">Send Your Insert List<\/a>\n<\/div>\n<\/aside>\n<section id=\"related-resources\">\n<h3 style=\"margin:28px 0 12px;color:#0c3554;\">Related HY Tools Resources<\/h3>\n<div style=\"display:flex;flex-wrap:wrap;gap:11px;margin:0 0 1.5rem;\">\n<a href=\"https:\/\/hycuttingtools.com\/ko\/cnc-inserts\/\" style=\"flex:1 1 360px;display:block;padding:12px 14px;background:#f7fafc;border:1px solid #dfe8ed;border-radius:7px;color:#244c66;text-decoration:none;text-underline-offset:2px;\">Carbide inserts for turning, milling, grooving, threading and holemaking<\/a><br \/>\n<a href=\"https:\/\/hycuttingtools.com\/ko\/%ec%a0%9c%ed%92%88\/cnmg-snmg-1204-turning-inserts\/\" style=\"flex:1 1 360px;display:block;padding:12px 14px;background:#f7fafc;border:1px solid #dfe8ed;border-radius:7px;color:#244c66;text-decoration:none;text-underline-offset:2px;\">CNMG and SNMG 1204 turning insert series<\/a><br \/>\n<a href=\"https:\/\/hycuttingtools.com\/ko\/%ec%a0%9c%ed%92%88\/vnmg-1604-carbide-turning-inserts-for-steel-and-stainless-steel\/\" style=\"flex:1 1 360px;display:block;padding:12px 14px;background:#f7fafc;border:1px solid #dfe8ed;border-radius:7px;color:#244c66;text-decoration:none;text-underline-offset:2px;\">VNMG 1604 turning inserts for profiling and finishing<\/a><br \/>\n<a href=\"https:\/\/hycuttingtools.com\/ko\/resources\/faqs\/\" style=\"flex:1 1 360px;display:block;padding:12px 14px;background:#f7fafc;border:1px solid #dfe8ed;border-radius:7px;color:#244c66;text-decoration:none;text-underline-offset:2px;\">Ordering, samples, mixed-model quantities and customization FAQ<\/a>\n<\/div>\n<\/section>\n<section id=\"faq\">\n<h2 style=\"margin:34px 0 12px;color:#0c3554;margin-top:34px;\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<div class=\"hy-faq\">\n<details style=\"margin:0 0 8px;border:1px solid #d8e4eb;border-radius:8px;background:#fff;overflow:hidden;\">\n<summary style=\"padding:13px 42px 13px 14px;color:#143d5a;\">What does CNMG 120408 mean?<\/summary>\n<div class=\"hy-faq-answer\" style=\"padding:0 14px 13px;\">\n<p style=\"margin-top:0;margin-bottom:14px;margin:0;\">C identifies an 80\u00b0 rhombic shape, N indicates 0\u00b0 normal clearance, M is the tolerance class and G identifies the chipbreaker and\/or hole configuration. The remaining digits identify the metric cutting-edge-length code, thickness code and nose-radius code. Chipbreaker details and grade normally require additional suffixes or separate codes.<\/p>\n<\/div>\n<\/details>\n<details style=\"margin:0 0 8px;border:1px solid #d8e4eb;border-radius:8px;background:#fff;overflow:hidden;\">\n<summary style=\"padding:13px 42px 13px 14px;color:#143d5a;\">Is a negative insert always negative-rake?<\/summary>\n<div class=\"hy-faq-answer\" style=\"padding:0 14px 13px;\">\n<p style=\"margin-top:0;margin-bottom:14px;margin:0;\">No. \u201cNegative insert\u201d commonly refers to 0\u00b0 normal clearance. Chipbreaker and holder orientation also affect effective rake and cutting action.<\/p>\n<\/div>\n<\/details>\n<details style=\"margin:0 0 8px;border:1px solid #d8e4eb;border-radius:8px;background:#fff;overflow:hidden;\">\n<summary style=\"padding:13px 42px 13px 14px;color:#143d5a;\">Can two inserts with the same ISO dimensional code be interchangeable?<\/summary>\n<div class=\"hy-faq-answer\" style=\"padding:0 14px 13px;\">\n<p style=\"margin-top:0;margin-bottom:14px;margin:0;\">They may fit if dimensional and clamping details agree, but geometry, substrate, coating, edge preparation and application range still require review and testing.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<p class=\"hy-section-note\" style=\"margin-top:0;margin-bottom:14px;margin:6px 0 14px;padding:10px 12px;background:#f5f9fb;border-left:3px solid #5ca7cf;border-radius:0 6px 6px 0;color:#496270;\"><strong>Technical note:<\/strong> Confirm final geometry, grade and cutting data against the manufacturer\u2019s catalog and a controlled test.<\/p>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>A turning insert can match the required shape and size and still be wrong. The&#8230;<\/p>","protected":false},"author":1,"featured_media":8550,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowkrPfCw:productID":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[5003],"tags":[],"class_list":["post-1391","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tool-selection-guides"],"taxonomy_info":{"category":[{"value":5003,"label":"Tool Selection Guides"}]},"featured_image_src_large":["https:\/\/hycuttingtools.com\/wp-content\/uploads\/2026\/09\/CNC-Insert-Selection-Guide-1024x576.webp",1024,576,true],"author_info":{"display_name":"HY Cutting Tools","author_link":"https:\/\/hycuttingtools.com\/ko\/author\/1010616998qq-com\/"},"comment_info":1,"category_info":[{"term_id":5003,"name":"Tool Selection Guides","slug":"tool-selection-guides","term_group":0,"term_taxonomy_id":5003,"taxonomy":"category","description":"","parent":0,"count":16,"filter":"raw","cat_ID":5003,"category_count":16,"category_description":"","cat_name":"Tool Selection Guides","category_nicename":"tool-selection-guides","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/posts\/1391","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/comments?post=1391"}],"version-history":[{"count":10,"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/posts\/1391\/revisions"}],"predecessor-version":[{"id":8540,"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/posts\/1391\/revisions\/8540"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/media\/8550"}],"wp:attachment":[{"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/media?parent=1391"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/categories?post=1391"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hycuttingtools.com\/ko\/wp-json\/wp\/v2\/tags?post=1391"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}