VNMG/VNGG 160402/160404 Ceramic Turning Inserts for Precision Finishing
VNMG and VNGG 160402/160404 ceramic turning inserts are intended for precision finishing where dimensional control and fine surface quality are required. Their 35° diamond profile provides access to detailed contours and narrow features. Ceramic grade selection should be matched carefully to the workpiece material, cutting conditions and required finish.
Consistent Quality
Consistent geometry across repeat orders.
Flexible Orders
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
Standard & Custom
Standard sizes and custom configurations.
◆VNMG/VNGG 160402/160404 Ceramic Turning Inserts Overview
VNMG and VNGG 1604 turning inserts use a 35° diamond shape for profile access and finishing of suitable workpieces. The 160402 and 160404 size codes identify 0.2 and 0.4 mm nominal corner radii. Select the complete geometry and grade according to the workpiece, holder and required surface finish.
This page covers carbide and cermet configurations by confirmation. A precision-ground VNGG geometry and a VNMG geometry may have different edge preparation and chip control even when the nominal body size matches. Steel, stainless steel, cast iron and aluminum require different application-specific grades; one insert is not specified for every material shown in the range illustrations.
Send the full insert code, grade, chipbreaker and holder model when requesting a replacement or sample. The size code alone does not identify the cutting material, coating or application range.
Quick Procurement Summary
| Insert Families | VNMG / VNGG 1604 | Shape | 35° diamond, negative relief |
|---|---|---|---|
| Size Codes | 160402 / 160404 | Corner Radius | 0.2 / 0.4 mm |
| Substrate | Carbide or cermet by full code | Main Use | Precision external turning / profiling |
| Selection Data | Workpiece and operation | Order Check | Grade / edge / holder / quantity |
Confirm which of the four size combinations is offered in the selected substrate and grade. Product images illustrate the broader insert range.
Key Configuration Points
◆Insert Range Images
Information for Selection
Share your existing insert and holder codes, workpiece grade and hardness, feed, cutting depth, coolant, target finish and quantity. We can then check the available VNMG/VNGG radius, substrate, grade and chipbreaker.
See the CNC Insert Selection Guide or send your complete model for a quotation.
◆Specifications & Size Chart
The 160402 and 160404 codes identify nominal 0.2 and 0.4 mm corner radii on a 35° diamond, negative-relief insert. Manufacturer catalogues for selected VNMG and VNGG 1604 items list IC 9.525 mm and thickness 4.76 mm. The table below is a size-code reference; availability, fixing-hole specification, cutting substrate and edge preparation must be confirmed for the exact ordered item.
| Size Code | IC Reference | Thickness Reference | Nose Radius | Configuration Check |
|---|---|---|---|---|
| VNMG 160402 | 9.525 mm* | 4.76 mm* | 0.2 mm | Grade, chipbreaker and availability |
| VNMG 160404 | 9.525 mm* | 4.76 mm* | 0.4 mm | Grade, chipbreaker and availability |
| VNGG 160402 | 9.525 mm* | 4.76 mm* | 0.2 mm | Ground geometry and grade |
| VNGG 160404 | 9.525 mm* | 4.76 mm* | 0.4 mm | Ground geometry and grade |
◆Material & Geometry Checklist
| Parameter | What to Confirm |
|---|---|
| Substrate | Carbide or cermet by complete grade code. Do not identify material from coating color or the 1604 size alone. |
| Tolerance & edge | VNMG and VNGG have different tolerance letters. Compare drawing, ground profile, edge preparation and nose radius. |
| Chipbreaker | Supplier-specific suffix and recommended feed/depth-of-cut window; confirm chip control in the actual workpiece. |
| Workpiece | State material grade and hardness. Steel, stainless steel, cast iron and aluminum require separate grade and edge selection. |
| Holder & supply | Holder model, clamping seat, availability, sample quantity, pack format and lead time. |
◆How to Select the Insert
◆Starting Cutting Data
The illustrations do not identify a specific grade or provide verified feed, cutting speed and depth-of-cut values. Obtain the supplier's starting range for the complete insert code and workpiece. For turning, n = (1000 × Vc) / (π × D), where n is spindle speed in RPM, Vc is cutting speed in m/min and D is the workpiece diameter at the cut in mm.
◆Related Series & Technical References
For other insert shapes and materials, explore our carbide turning and milling insert range. For an exact drawing, grade sheet and cutting data, send your insert and holder codes with the workpiece and quantity.
◆Carbide Insert Customization & OEM
Specify the insert around the machining operation, workpiece and holder. We can review standard replacements, application-specific geometry and private-label requirements using your insert designation, drawing or sample. Available grades, coatings, dimensions and order quantities are confirmed for each requested series.
Geometry & Chip Control
Review chipbreaker, rake, cutting-edge preparation, nose radius and corner design for the operation and workpiece. Confirm holder compatibility before approving a modified geometry.
Substrate & Coating
Select an available carbide grade and coating for the workpiece material, cutting conditions and desired balance of wear resistance and edge toughness.
Dimensions & OEM
Review insert size, thickness, locating and clamping features, tolerances, laser marking and private-label packaging against the approved specification.
◆Customization Options
Use the fields below when sending an inquiry. The exact options depend on the insert family and are confirmed in the quotation or approved drawing.
| Specification | Details to Confirm |
|---|---|
| Insert Type | Turning, milling, threading, grooving or drilling insert; send the designation or drawing. |
| Size & Fit | Shape, size, thickness, inscribed circle or edge length, hole or clamping form, and holder model. |
| Cutting Geometry | Chipbreaker, nose or corner radius, edge preparation, cutting direction and application-specific profile. |
| Grade & Coating | Workpiece group and grade, carbide substrate, coating system and wet or dry cutting conditions. |
| Tolerance & Inspection | Critical dimensions, profile requirements, inspection method and any required report. |
| OEM Presentation | Insert or box marking, label content, packaging format and quantity per pack. |
◆How to Request a Custom Insert
Send your insert requirements through our contact form or review our OEM and private-label service.
◆Carbide Insert Quality Control
Insert quality depends on the approved grade, geometry, coating and dimensional specification. We review the requirements at order confirmation and align the inspection scope with the insert series and any customer drawing. Share critical dimensions or documentation needs before production so they can be included in the agreed inspection plan.
01 · Incoming Material
Confirm the specified carbide grade or material documentation against the order requirements.
02 · In-Process Checks
Review dimensions and cutting-edge features during production against the approved specification.
03 · Final Inspection
Check the agreed dimensions, appearance, edge condition, coating identification and marking as applicable.
04 · Packing Review
Verify the item code, quantity, labels and protective packing against the approved order.
◆Inspection & Documentation
Inspection points and acceptance criteria should be agreed for the ordered series. For custom inserts, the approved drawing takes priority over a generic catalogue description.
| Check Area | What to Confirm |
|---|---|
| Dimensions & Fit | Insert size, thickness, corner radius, clamping features and any drawing tolerances. |
| Cutting Geometry | Chipbreaker, edge preparation, usable corners and profile where applicable. |
| Grade & Coating | Approved grade and coating designation; any requested verification method. |
| Appearance & Packing | Visible edge damage, marking, item code, count and packing format. |
| Requested Records | Inspection report, material or coating documentation, sample approval or batch identification when agreed. |
◆Order & Delivery
Share a line-by-line list of insert codes and quantities for a mixed-size quotation. Stock status, minimum quantity, sample requirements and production lead time are confirmed for each grade, coating and configuration.
Send your item list and quality requirements through our contact form for specification, availability and delivery confirmation.
◆Product FAQs
What are VNMG and VNGG 1604 inserts used for?
Their 35° diamond geometry provides access for suitable external finishing and detailed profile turning. Confirm the workpiece, edge geometry, grade and toolholder before selecting the insert; the size code alone does not define a cutting application.
What is the difference between 160402 and 160404?
The last two digits indicate a nominal 0.2 or 0.4 mm nose radius. The smaller radius can help with fine profile access and lighter feeds; the 0.4 mm radius gives more corner support. Actual finish also depends on chipbreaker, feed and setup stability.
What is the difference between VNMG and VNGG?
Both codes describe 35° diamond inserts with negative relief, but the third letter identifies a different tolerance class. A VNGG model may have a precision-ground edge in a selected series; the exact grinding, chipbreaker, dimensions and holder fit must be checked from the complete code and drawing.
Are these inserts ceramic?
The two range illustrations describe carbide and cermet examples. VNMG/VNGG and the 1604 size do not identify the substrate. Ask for the complete material grade and supplier datasheet before ordering an insert specifically as ceramic.
Can one grade machine steel, stainless steel, cast iron and aluminum?
The image shows examples of separate material-specific insert grades. Confirm a substrate, coating and cutting edge for each workpiece grade and operation. Do not apply the full range of pictured materials to one complete item code.
How do I choose starting cutting parameters?
Provide the complete insert code, workpiece grade and hardness, feed direction, coolant, cutting depth and target finish. Obtain the grade-specific speed, feed and depth-of-cut range, then validate chip control and wear in a machining trial.
◆Ordering & OEM FAQs
What should I send to match an existing insert?
Send the full manufacturer designation, grade, chipbreaker, photos of both faces and the box label, holder code, workpiece, cutting conditions and required quantity. Confirm dimensional fit and performance in a controlled trial.
Are all four size combinations available in both materials?
Availability has not been established by the two illustrations. List each required VNMG or VNGG size, substrate, grade and quantity separately so the offered codes, stock, pack count and lead time can be confirmed.
Can I request samples?
Provide the complete configuration and planned test conditions. Confirm sample availability and compare edge wear, finish, chip control and dimensional consistency under the same machining setup.
Can I request private-label packaging?
Send the item list, label or box artwork, pack quantity and forecast volume. Marking, packaging, minimum order quantity and delivery terms are confirmed for the selected grade and model.
◆Guides & Technical References
Use the CNC Insert Selection Guide for geometry, grade, corner radius and holder checks. The Carbide Insert Types Guide explains related insert families.
For the exact drawing, grade datasheet or quotation, send the full insert and holder codes with the workpiece and quantity.
Need Sizes, Pricing or Custom Options?
Send us the required tool type, sizes, quantities, workpiece material and any OEM or custom requirements. We will confirm suitable specifications, availability, lead time and quotation details.
Drawings, size lists and reference photos are welcome.
