HRC45-HRC65 4-Flute Solid Carbide Corner Radius End Mill for Steel and Mold Steel
This solid carbide corner radius end mill is designed for stable and high-precision metal machining. The 4-flute geometry improves cutting efficiency and surface finish, while the corner radius enhances edge strength. Suitable for materials from HRC45 to HRC65 in CNC milling applications.
⚙️ Konfigurasi Produk
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Flute Count: 4 Seruling
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Rentang Kekerasan: HRC45 / HRC55 / HRC65
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Sudut Helix: Standar (tersedia varian opsional)
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Panjang Keseluruhan: Panjang standar / diperpanjang
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Opsi Pelapisan: TiAlN / AlTiN / TiSiN / Tidak dilapisi
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Materi Aplikasi: Baja karbon, baja paduan, baja yang sudah dikeraskan & dikeraskan
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Kustomisasi: OEM / ODM tersedia
Kualitas yang Konsisten
Geometri yang konsisten pada setiap pesanan berulang.
Pesanan Fleksibel
Tersedia dalam jumlah kecil dan berbagai ukuran.
Dukungan OEM
Penandaan khusus, label, dan kemasan.
Standar & Khusus
Ukuran standar dan konfigurasi khusus.
HRC45–HRC65 4-Flute Solid Carbide Corner Radius End Mill Overview
This 4-flute solid carbide corner radius end mill series provides selectable HRC45, HRC55 and HRC65 configurations for carbon steel, alloy steel, tool and mold steel, and confirmed hardened-steel applications. Its reinforced corner radius improves edge strength and reduces chipping risk while retaining a flat-bottom cutting profile. The four-flute geometry supports stable side milling, pocketing, 2D/3D contouring and semi-finishing, with carbide grade, coating and edge preparation selected according to the workpiece hardness and cutting conditions.
Key Configuration
Reinforced Corner Radius
The radiused corner reduces local edge stress and chipping risk while maintaining a usable flat-bottom profile.
Four-Flute Cutting Geometry
Four cutting edges support productive side milling, profiling and semi-finishing with stable engagement.
Application-Matched Grade
Carbide grade, coating and edge preparation are selected for the confirmed steel hardness and operation.
Key Product Advantages
Stronger Corner
Improved corner strength compared with a sharp-edge square end mill.
Productive Engagement
Four flutes provide more cutting contacts per revolution for stable steel milling.
Three Grade Levels
HRC45, HRC55 and HRC65 options cover different hardness and application demands.
Flexible Configuration
Diameter, radius, length, coating and geometry can be reviewed for custom supply.
Recommended Milling Operations
The corner-radius profile is particularly useful where a sharp corner is unnecessary and improved tool-edge reliability is preferred.
Workpiece Material Compatibility
| MATERIAL GROUP | EXAMPLES | APPLICATION LEVEL |
|---|---|---|
| P Carbon Steel | General carbon and structural steels | Primary application |
| P Alloy & Tool Steel | Alloy steel, tool steel and mold steel | Confirm grade and hardness |
| H Hardened Steel | Confirmed tool, mold and heat-treated steels up to the selected series level | HRC55/HRC65 review required |
Product Details & Milling Demonstration
Tool Nomenclature & Dimensions
Reference dimensions and standard configurations for the HRC45–HRC65 4-flute solid carbide corner radius end mill series. All listed dimensions are in millimeters.
Technical Configuration
| PARAMETER | SPECIFICATION |
|---|---|
| Bahan Alat | Micro-Grain Solid Carbide |
| End Profile | Flat Bottom with Reinforced Corner Radius |
| Hardness Series | HRC45 / HRC55 / HRC65 |
| Pelapisan | Selected according to carbide grade, workpiece hardness and application |
| Flute Count | 4 Flutes |
| Standard DC Range | Ø1–Ø12 mm in the listed size matrix |
| Primary Materials | Carbon Steel / Alloy Steel / Tool & Mold Steel / Confirmed Hardened Steel |
| Kompatibilitas Mesin | CNC Machining Centers / Milling Machines |
| Custom Supply | Drawing-based diameter, radius, flute length, shank and overall-length configurations |
Standard Size Matrix
The configurations below are consolidated from the original product table. Model strings have been normalized to DC × R × DCON × OAL for clearer distributor and purchasing review. Select the carbide and coating series separately according to workpiece hardness.
| SPECIFICATION | DC | R | DCON | OAL | FLUTES |
|---|---|---|---|---|---|
| Ø1×R0.2×D4×50L | 1 | 0.2 | 4 | 50 | 4 |
| Ø1.5×R0.2×D4×50L | 1.5 | 0.2 | 4 | 50 | 4 |
| Ø2×R0.2 / R0.3 / R0.5×D4×50L | 2 | 0.2 / 0.3 / 0.5 | 4 | 50 | 4 |
| Ø2.5×R0.2 / R0.5×D4×50L | 2.5 | 0.2 / 0.5 | 4 | 50 | 4 |
| Ø3×R0.2 / R0.5×D3×50L | 3 | 0.2 / 0.5 | 3 | 50 | 4 |
| Ø3×R0.2 / R0.3 / R0.5 / R1×D4×50L | 3 | 0.2 / 0.3 / 0.5 / 1 | 4 | 50 | 4 |
| Ø4×R0.2 / R0.3 / R0.5 / R1×D4×50L | 4 | 0.2 / 0.3 / 0.5 / 1 | 4 | 50 | 4 |
| Ø5×R0.5 / R1×D6×50L | 5 | 0.5 / 1 | 6 | 50 | 4 |
| Ø6×R0.2 / R0.3 / R0.5 / R1×D6×50L | 6 | 0.2 / 0.3 / 0.5 / 1 | 6 | 50 | 4 |
| Ø6×R0.2 / R0.5 / R1×D8×60L | 6 | 0.2 / 0.5 / 1 | 8 | 60 | 4 |
| Ø8×R1.5 / R2×D8×60L | 8 | 1.5 / 2 | 8 | 60 | 4 |
| Ø10×R0.5 / R1 / R1.5 / R2 / R3×D10×75L | 10 | 0.5 / 1 / 1.5 / 2 / 3 | 10 | 75 | 4 |
| Ø12×R0.5 / R1 / R2 / R3×D12×75L | 12 | 0.5 / 1 / 2 / 3 | 12 | 75 | 4 |
Hardness-Series Selection
| SERIES | SELECTION POSITIONING |
|---|---|
| HRC45 | General carbon and alloy steel under stable machining conditions |
| HRC55 | Tool steel, mold steel and selected pre-hardened steel applications |
| HRC65 | Confirmed hardened-steel finishing and light semi-finishing after technical review |
Corner Radius End Mill Application Guidance
- Radius Selection: Select an R value equal to or smaller than the required part fillet.
- Side Milling: Use appropriate radial engagement to benefit from the four-flute geometry and control cutting temperature.
- Pocket Machining: Confirm center-cutting and entry capability before plunging or helical interpolation.
- Toolholding: Use a low-runout holder and minimize unnecessary overhang, especially for small DC and small R sizes.
- Chip Control: Use air blow or a suitable coolant strategy to prevent chip recutting in enclosed pockets.
HRC45–HRC65 4-Flute Corner Radius End Mill Customization
Cutting diameter, corner radius, flute length, overall length, shank configuration, cutting-edge geometry, carbide grade and coating can be configured for steel-milling applications. HRC45, HRC55 and HRC65 series options are selected according to the workpiece grade and hardness, while non-standard dimensions and application-specific geometries can be reviewed according to the required part fillet, milling operation, tool engagement, machine rigidity and dimensional accuracy.
| PARAMETER | MANUFACTURING CAPABILITIES |
|---|---|
| Hardness Series | HRC45, HRC55 and HRC65 configurations selected according to the actual workpiece grade, hardness, milling operation and required balance between cutting-edge strength and wear resistance |
| Diameter Pemotongan | Reference standard sizes cover selected cutting diameters from Ø1 to Ø12 mm, with intermediate and non-standard diameters available after drawing review |
| Corner Radius | Standard and drawing-defined R values can be produced according to the required component fillet, cutting-edge strength, machining allowance and surface transition |
| Flute Count | 4-flute configuration for side milling, pocket machining, contour milling, roughing, semi-finishing and selected finishing operations |
| Panjang Seruling | Standard, short-flute and drawing-defined flute lengths can be configured according to the machining depth, axial engagement and tool-rigidity requirement |
| Reach & Overall Length | Standard and extended-reach overall lengths can be reviewed according to the required machining depth, holder clearance and allowable tool overhang |
| Konfigurasi Shank | Precision cylindrical shanks with standard or drawing-defined diameter, clamping length and cutting-section transition |
| Corner-Radius Geometry | Reinforced transition between the end and peripheral cutting edges can be matched to the required part fillet while retaining a flat-bottom cutting profile |
| Cutting-Edge Preparation | Rake geometry, relief geometry, edge honing and corner preparation can be adjusted according to the selected hardness series, cutting load and surface-finish requirement |
| Carbide Grade | Micro-grain carbide grades can be matched to the HRC45, HRC55 or HRC65 series according to the required toughness, hardness resistance and machining stability |
| Coating Selection | AlTiN, TiAlN, TiSiN, AlTiSiN or another application-specific coating can be selected according to the workpiece hardness, cutting temperature, coolant method and required tool life |
| Milling Application | Geometry can be optimized for side milling, pocket machining, 2D and 3D contouring, roughing, semi-finishing and finishing; slotting requires additional chip-evacuation and engagement review |
| Dimensional Tolerance | Drawing-defined requirements for cutting diameter, corner radius, flute length, shank diameter, overall length, cutting-edge runout and profile accuracy |
Layanan OEM & Merek Pribadi
OEM manufacturing and private-label supply are available for industrial distributors, tooling brands and repeat-production customers. The selected HRC series, corner-radius specification, coating identification, laser marking, product labels and protective packaging can be configured according to the approved tool drawing and order requirements.
Laser Etching
Custom logos, tool codes, cutting diameter, corner radius, HRC series, coating identification and batch numbers can be marked according to the available shank area.
Custom Labels & Packaging
Individual protective tubes, specification labels, hardness-series identification, colored packaging tubes and private-label packaging can be reviewed.
Coating & Series Identification
Coating appearance, HRC-series labeling and product codes can be coordinated to help distributors distinguish different application grades.
Commercial Terms
MOQ, sample evaluation, custom-size trials, repeat orders and scheduled supply programs are confirmed according to the selected configuration.
Technical Workflow
A structured review process is used to confirm standard, customized and private-label corner radius end mill requirements before production.
Inquiry
Submit the material, hardness, milling operation, dimensions, tolerance and quantity.
Engineering
Review flute geometry, helix angle, edge preparation, coating, ap and ae.
Commercial
Confirm quotation, MOQ, sample requirements, production schedule and delivery terms.
Production
CNC grinding, end-face formation, edge preparation, coating and laser marking.
Quality Control
Inspect diameter, flute length, shank, runout, square-end geometry and cutting edges.
Quality, Inspection & Delivery
Our solid carbide square end mills are controlled through material verification, precision grinding, in-process measurement and final inspection. Key dimensions, square-end geometry, cutting-edge condition, coating appearance and product identification are reviewed according to the approved specification or drawing before packing.
Three-Stage Quality Control
Inspection checkpoints are arranged around the manufacturing process to support dimensional consistency and repeat-order control.
Incoming Material Control
Carbide substrate grade, blank dimensions and supplied material information are checked against the production requirement.
In-Process Grinding Control
Cutting diameter, flute geometry, flute length, square-end profile and shank dimensions are monitored during CNC grinding.
Final Tool Inspection
Finished tools are reviewed for specified dimensions, runout, cutting-edge condition, coating appearance, marking and packing identification.
Key Inspection Characteristics
Inspection requirements are confirmed according to the standard product specification or the approved custom drawing.
| INSPECTION ITEM | CONTROL FOCUS | CONFIRMATION BASIS |
|---|---|---|
| Cutting Diameter (DC) | Diameter and dimensional consistency | Standard specification or approved drawing |
| Flute Length (APMX) | Effective cutting length | Confirmed product size or drawing requirement |
| Shank Diameter (DCON) | Clamping-section dimension and surface condition | Applicable shank specification |
| Overall Length (OAL) | Total tool length | Standard size matrix or approved drawing |
| Radial Runout | Concentricity between cutting section and shank | Agreed inspection requirement |
| Square-End Geometry | End-face profile, corner condition and center-cutting form | Selected tool configuration |
| Flute & Helix Profile | Flute count, helix form and grinding consistency | Approved manufacturing configuration |
| Cutting Edge & Coating | Edge condition, visible defects and coating appearance | Application-specific production requirement |
| Marking & Identification | Tool code, dimensions and batch information where applicable | Confirmed order and packaging specification |
Measurement & Batch Traceability
Optical measuring systems, tool inspection equipment and appropriate dimensional gauges are selected according to the feature being checked.
Optical Measurement
Profile and dimensional review of specified cutting features.
Runout Verification
Concentricity review based on the agreed product requirement.
Edge Inspection
Magnified review of the end face, corners and cutting-edge condition.
Batch Identification
Order, product and batch information are linked where required for repeat supply.
Protective Packaging Process
Finished end mills are protected to reduce contact between cutting edges and to support clear product identification during storage and transportation.
Bulk-Order & Export Packaging
Bulk shipments can be arranged with reinforced cartons, protective wrapping, palletized loading or export cases according to order quantity, shipment weight and agreed transportation requirements.
Delivery Coordination
Production completion, packing method and dispatch arrangements are confirmed according to the approved order. Courier, air, sea or customer-designated shipping options can be reviewed according to shipment size and destination. Final lead time is confirmed after product specifications, quantity and packaging requirements are approved.
Pertanyaan Umum & Unduhan
Review common product, application and ordering questions for the HRC45–HRC65 4-flute solid carbide corner radius end mill series, then access the current end mill catalog and starting cutting-data guide.
Product & Application FAQs
Selection guidance for different steel hardness levels and corner-radius milling applications.
What is the difference between the HRC45, HRC55 and HRC65 series?
The three series use application-oriented carbide, cutting-edge and coating configurations for different workpiece hardness levels. HRC45 is generally selected for carbon and alloy steel, HRC55 for tool steel, mold steel and selected pre-hardened steel, and HRC65 for confirmed hardened-steel finishing or light semi-finishing. Final selection should be based on the actual material and hardness.
Does the HRC rating guarantee machining at that exact hardness?
No. The HRC rating indicates the product-series positioning rather than a universal machining guarantee. Actual performance depends on the steel grade, operation, cutting diameter, corner radius, cutting data, holder runout, tool overhang, machine rigidity and coolant strategy.
What materials can this corner radius end mill machine?
The series is intended for carbon steel, alloy steel, tool steel, mold steel, pre-hardened steel and selected hardened steel. Please provide the exact workpiece grade and hardness so the appropriate HRC series, coating and cutting geometry can be confirmed.
What is the advantage of a corner radius end mill?
The corner radius reinforces the transition between the end and peripheral cutting edges. It helps reduce stress concentration and edge chipping compared with a sharp-corner square end mill while retaining a flat-bottom profile for pockets, steps and contour features.
How should I select the correct corner radius?
Select a cutter radius equal to or smaller than the required internal fillet of the component. A larger R value generally increases corner strength, but the cutter cannot produce an internal fillet smaller than its own radius. A component drawing is recommended when the fillet dimension is critical.
Which machining operations are suitable for the 4-flute design?
The 4-flute geometry is suitable for side milling, pocket machining, 2D and 3D contouring, roughing, semi-finishing and selected finishing operations. Four cutting edges provide stable engagement and productive feed capability when radial engagement and chip evacuation are properly controlled.
Can this 4-flute end mill be used for full-width slotting?
Selected configurations can be used for slotting, but a 4-flute cutter has less chip space than a 2-flute cutter. Use reduced engagement, suitable cutting parameters and reliable chip removal for full-width slots. Center-cutting and plunge capability should be confirmed for the selected configuration.
Ordering & Customization FAQs
Ordering information for distributors, tooling brands and customers requiring standard or drawing-based configurations.
What standard sizes are available?
The reference matrix covers selected cutting diameters from Ø1 to Ø12 mm with multiple corner radii, shank diameters and overall lengths. Availability should be confirmed using the complete specification, including DC, R, flute length, DCON, OAL and required HRC series.
Can non-standard sizes and geometry be manufactured?
Yes. Cutting diameter, corner radius, flute length, reach, shank diameter, overall length, cutting-edge preparation, flute geometry and coating can be reviewed according to the tool drawing, component drawing and machining application.
Can I order samples before placing a wholesale order?
Yes. Sample orders can be reviewed according to the required HRC series, cutting diameter, corner radius, coating and quantity. Please contact us to confirm sample availability, cost and shipping arrangements.
What is the lead time?
In-stock standard sizes are generally ready for shipment within 1–3 days. Lead time for customized or made-to-order tools is confirmed after reviewing the required dimensions, HRC series, coating, quantity and packaging requirements.
Are OEM marking and private-label packaging available?
Yes. Laser marking, customized tool codes, private labels, protective tubes and branded packaging are available for distributors, resellers and OEM orders. Final options depend on the tool size, marking area and order quantity.
What information is required for an accurate quotation?
Please provide the workpiece material and hardness, cutting diameter, corner radius, flute length, shank diameter, overall length, machining operation, axial depth ap, radial engagement ae, coating requirement, dimensional tolerance and order quantity. A tool or component drawing is recommended for custom projects.
Technical Downloads
Access current product-range information and starting cutting references for solid carbide end mill selection.
Solid Carbide End Mills Catalog
Product families, hardness series, flute options and reference sizes.
End Mill Speeds & Feeds Guide
Starting cutting speeds, chip loads, engagement guidance and adjustment notes.
Cutting data are starting references only. Adjust the values according to the selected HRC series, cutting diameter, corner radius, workpiece hardness, engagement, tool overhang, holder condition and machine rigidity.
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