HRC45 Custom 4-Flute Carbide Ball Nose End Mill for Steel
The HRC45 custom 4-flute solid carbide ball nose end mill is designed for 3D steel contouring and mold semi-finishing, with custom ball radii, cutting diameters and lengths for application-specific milling.
- ◆Custom 4-Flute Geometry – Application-specific steel milling.
- ◆Custom Ball Radius & Sizes – Tailored diameters and lengths.
- ◆Stable 3D Mold Finishing – Controlled curved-surface machining.
Custom Geometry
Application-specific design
Custom Ball Radii & Sizes
Tailored radii, diameters and lengths
Precision 3D Finishing
Stable curved-surface&profiling
OEM & Repeat Supply
Drawing-based production and private labeling
Custom HRC45 Series
HRC45 Custom Carbide Ball Nose End Mill
The HRC45 custom 4-flute carbide ball nose end mill for steel is designed for 3D contouring, mold semi-finishing and curved-surface finishing. Ball radii, diameters, lengths and cutting geometry are tailored to non-standard part profiles and OEM tooling requirements.
Core Design
Custom Ball Nose End Mill Features
01
Custom 4-Flute Geometry
Four cutting edges for controlled steel semi-finishing and profiling.
02
Custom Ball Radii & Sizes
Tailored radii, cutting diameters, flute lengths and shanks.
03
3D Mold Semi-Finishing
Full-radius cutting for curved surfaces and mold cavities.
04
OEM & Repeat Production
Drawing-based specifications and private-label options.
Four-Flute End Mill Product Video
Product Views
Custom Tool Configurations & Cutting Details
Precision-ground ball nose geometry and non-standard four-flute configurations for steel milling.
Performance Details
Product Advantages
Custom 4-flute ball nose geometry enhances cutting stability and chip control for complex steel contours, while tailored profiles and heat-resistant coatings support precision mold finishing.
Application Guide
Recommended Steel Milling Applications
Custom four-flute ball nose tools for 3D contouring, mold semi-finishing and precision profiling in selected steels.
| Material | Common Grades |
|---|---|
| Carbon Steel | AISI 1018, 1045, C45, S45C |
| Alloy Steel | AISI 4140, 4340, 42CrMo4, SCM440 |
| Mold & Pre-Hardened Steel | P20, 1.2311, 1.2738, 718H |
Application Note: Grades are reference examples. Confirm workpiece hardness, custom dimensions, chip evacuation and cutting conditions before machining.
HRC45 Custom Carbide Ball Nose End Mill Specifications
Core specifications for HRC45 custom carbide ball nose end mill for steel contouring and mold semi-finishing.
| Parameter | Specification |
|---|---|
| Tool Type | Custom Carbide Ball Nose End Mill |
| End Profile | Full-Radius Ball Nose |
| Flutes | 4 — Non-Standard |
| Hardness Series | HRC45 |
| Substrate | Micro-Grain Solid Carbide |
| Coating | Black AlTiN |
| Supply Type | Made to Order / Drawing-Based |
| Applications | 3D Contouring, Mold Semi-Finishing & Steel Profiling |
Made-to-Order Reference Sizes
Reference dimensions for custom 4-flute ball nose end mills. Final sizes require drawing approval.
Scroll to view all reference sizes.
| SPECIFICATION | SHANK d | CUTTING D | FLUTE L1 | RADIUS R | OAL L |
|---|---|---|---|---|---|
| R0.5×2×D4×50L* | 4 | 1 | 4* | 0.5 | 50 |
| R0.75×3×D4×50L | 4 | 1.5 | 3 | 0.75 | 50 |
| R1×4×D4×50L* | 4 | 4* | 4 | 1 | 50 |
| R1.25×5×D4×50L | 4 | 2.5 | 5 | 1.25 | 50 |
| R1.5×6×D3×50L | 3 | 3 | 6 | 1.5 | 50 |
| R1.5×6×D3×75L | 3 | 3 | 6 | 1.5 | 75 |
| R1.5×6×D3×100L | 3 | 3 | 6 | 1.5 | 100 |
| R1.5×6×D4×50L | 4 | 3 | 6 | 1.5 | 50 |
| R1.5×6×D6×50L | 6 | 3 | 6 | 1.5 | 50 |
| R1.75×7×D4×50L | 4 | 3.5 | 7 | 1.75 | 50 |
| R2×8×D4×50L* | 4 | 4 | 8 | 4* | 50 |
| R2×8×D4×75L* | 4 | 4 | 8 | 4* | 75 |
| R2×8×D4×100L* | 4 | 4 | 8 | 4* | 100 |
| R2.5×10×D5×50L | 5 | 5 | 10 | 2.5 | 50 |
| R2.5×10×D5×75L | 5 | 5 | 10 | 2.5 | 75 |
| R2.5×10×D5×100L | 5 | 5 | 10 | 2.5 | 100 |
| R2.5×10×D6×50L | 6 | 5 | 10 | 2.5 | 50 |
| R3×12×D6×50L | 6 | 6 | 12 | 3 | 50 |
| R3×12×D6×75L | 6 | 6 | 12 | 3 | 75 |
| R3×12×D6×100L | 6 | 6 | 12 | 3 | 100 |
| R3×12×D6×150L | 6 | 6 | 12 | 3 | 150 |
| R3.5×14×D8×60L | 8 | 7 | 14 | 3.5 | 60 |
| R4×16×D8×60L | 8 | 8 | 16 | 4 | 60 |
| R4×16×D8×75L | 8 | 8 | 16 | 4 | 75 |
| R4×16×D8×100L | 8 | 8 | 16 | 4 | 100 |
| R4×16×D8×150L | 8 | 8 | 16 | 4 | 150 |
| R4.5×18×D10×75L | 10 | 9 | 18 | 4.5 | 75 |
| R5×20×D10×100L | 10 | 10 | 20 | 5 | 100 |
| R5×20×D10×150L | 10 | 10 | 20 | 5 | 150 |
| R5.5×22×D12×75L | 12 | 11 | 22 | 5.5 | 75 |
| R6×24×D12×75L | 12 | 12 | 24 | 6 | 75 |
| R6×24×D12×100L | 12 | 12 | 24 | 6 | 100 |
| R6×24×D12×150L | 12 | 12 | 24 | 6 | 150 |
| R6.5×28×D14×100L | 14 | 13 | 28 | 6.5 | 100 |
| R7×28×D14×80L | 14 | 14 | 28 | 7 | 80 |
| R7×28×D14×100L | 14 | 14 | 28 | 7 | 100 |
| R7×28×D14×150L | 14 | 14 | 28 | 7 | 150 |
| R8×32×D16×100L | 16 | 16 | 32 | 8 | 100 |
| R8×32×D16×150L | 16 | 16 | 32 | 8 | 150 |
| R9×36×D18×100L | 18 | 18 | 36 | 9 | 100 |
| R9×36×D18×150L | 18 | 18 | 36 | 9 | 150 |
| R10×40×D20×100L | 20 | 20 | 40 | 10 | 100 |
| R10×40×D20×150L | 20 | 20 | 40 | 10 | 150 |
Size Note: Reference custom sizes only. Verify marked (*) values, dimensions, coating and tolerances before production.
Need Custom 4-Flute Ball Nose End Mills?
Send your drawing, required dimensions and quantity for custom tooling and OEM quotation.
Customization & OEM
Custom dimensions, geometry and private-label options are available for distributor and OEM programs.
Drawing- and sample-based development is also available for special aluminum finishing applications.
Quality, Inspection & Delivery
Our carbide ball nose end mill for aluminum are controlled through material verification, precision grinding, in-process measurement and final inspection. See our manufacturing and quality control process for more information.
Tool inspection in practice — checking key dimensions, profile and cutting-edge condition before packing.
Three-Stage Quality Control
Inspection checkpoints support dimensional consistency and repeat-order control.
Incoming Material Control
Carbide grade and blank dimensions are checked before production.
In-Process Grinding Control
Key dimensions and flute geometry are checked during CNC grinding.
Final Tool Inspection
Finished tools are checked for dimensions, runout, cutting edges and identification.
Packaging & Delivery
Protective and export packing options are arranged according to order quantity and shipment requirements.
Protective Packaging
Bulk & Export Packaging
Custom 4-Flute Ball Nose End Mill FAQs
Answers to common questions about custom carbide ball nose end mills, 4-flute geometry, steel applications and non-standard tool sizes.
What is a custom 4-flute ball nose end mill used for?
What is the difference between 2-flute and 4-flute ball nose end mills?
Are HRC45 4-flute ball nose end mills standard or custom-made?
Can ball radius, cutting diameter and tool length be customized?
Which steel grades can the HRC45 4-flute ball nose end mill machine?
Can a custom 4-flute ball nose end mill be manufactured from a drawing or sample?
Customization & Ordering FAQs
Ordering information for tooling distributors, importers and OEM buyers.
What is the MOQ for custom 4-flute ball nose end mills?
Can I order samples before bulk production?
Are OEM marking and private-label packaging available?
What information is needed to quote a custom 4-flute ball nose end mill?
Technical Downloads
Catalogs and reference cutting data for carbide end mill selection.
Solid Carbide End Mill Catalog
Review related carbide end mill series.
End Mill Speeds & Feeds Guide
Reference starting cutting parameters.
Need Sizes, Pricing or Custom Options?
Send your specifications and quantity for a quote.
- Standard Sizes
- Small Trial Orders
- Mixed Sizes
- OEM & Custom
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