HRC45 4-Flute Solid Carbide Ball Nose End Mill for Steel
This HRC45 solid carbide ball nose end mill features a non-standard 4 flautas configuration for efficient finishing and 3D contour machining of steel.
- ◆Non-standard 4-flute configuration for special machining requirements
- ◆Four cutting edges provide efficient and stable finishing performance
- ◆Ball nose geometry produces smooth 3D contours and curved surfaces
10 PCS
3–7 Days
4 Flutes — Non-Standard
Fresas de punta esférica
Hasta HRC45
Steel
Calidad constante
Consistent geometry across repeat orders.
Pedidos flexibles
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
Herramientas estándar y personalizadas
Standard sizes and custom configurations.
HRC45 4-Flute Ball Nose End Mill Overview
This HRC45 4-flute solid carbide ball nose end mill is a non-standard, made-to-order configuration for 3D contouring, cavity machining and profile finishing in carbon steel, alloy steel and mold steel. Compared with a conventional 2-flute ball nose cutter, the 4-flute design provides more cutting edges per revolution and a stronger core, supporting higher feed potential and stable finishing when chip space is not the primary requirement. Ball radius, cutting diameter, flute length, reach and coating are confirmed for each order.
Key Configuration
Full-Radius Ball Nose
Maintains progressive cutting contact on curved surfaces, cavities, fillets and complex 3D profiles.
Application-Specific 4-Flute Geometry
Four cutting edges increase tooth engagement and strengthen the core for controlled semi-finishing and finishing in steel.
Black AlTiN Coating
Provides thermal and wear protection for machining carbon steel, alloy steel and compatible pre-hardened steel.
Key Product Advantages
Smooth 3D Toolpaths
The ball profile supports continuous contact when following curved and free-form surfaces.
More Cutting Edges
Four flutes provide more cutting contacts per revolution for productive side cutting and surface finishing.
Stronger Core Section
Reduced flute space allows a larger core section, supporting rigidity when the tool and setup are correctly matched.
Coated Edge Protection
Black AlTiN helps protect the cutting edge against heat and abrasive wear during steel milling.
Milling Operations
Mold Cavity Milling
Profile Milling
Semi-Finishing
Surface Finishing
Workpiece Material Compatibility
| MATERIAL GROUP | EXAMPLES | APPLICATION LEVEL |
|---|---|---|
| P Steel | Carbon steel and low-alloy steel | Primary application |
| P Tool & Mold Steel | Common mold and die steels within the hardness range | Confirm grade and hardness |
| H Pre-Hardened Steel | Selected pre-hardened steel up to HRC45 | Application review required |
Product Details & Milling Demonstration
Detailed product views and a machining demonstration of the HRC45 4-flute black AlTiN-coated solid carbide ball nose end mill.
Four-Flute Cutting Geometry & Ball-Nose ProfileTool Nomenclature & Dimensions
Dimensional nomenclature and reference configurations for the HRC45 4-flute solid carbide ball nose end mill. This 4-flute version is supplied as a non-standard, made-to-order tool; all dimensions are confirmed against the inquiry or drawing before production. Dimensions are in millimeters.
Technical Configuration
| TECHNICAL ITEM | SPECIFICATION |
|---|---|
| Tipo de herramienta | Solid carbide ball nose end mill |
| End Profile | Ball Nose / Full Radius |
| Recuento de flautas | 4 Flutes — Non-Standard Configuration |
| Supply Type | Made to Order / Drawing-Based Production |
| Workpiece Hardness | Steel up to HRC45 |
| Carbide Grade Data | 0.8 μm grain size; 10% Co; flexural strength 3320 N/mm² (supplier reference data) |
| Standard Coating | Black AlTiN |
| Coating Reference Data | 3300 HV; 2.5–3 μm; oxidation temperature 900°C; friction coefficient 0.3 (supplier reference data) |
| Primary Operations | 3D contouring, profiling, cavity machining, semi-finishing and finishing |
| Dirección de corte | Corte a derechas |
| Coolant Method | Air Blow / Oil Mist / External Coolant According to Application |
Made-to-Order Reference Configurations
The dimensions below are reference combinations retained from the original product information and must not be treated as stocked standard sizes. Confirm the required ball radius, flute length, shank diameter, overall length, quantity and machining conditions before quotation and production.
| SPECIFICATION | R | DC / D | APMX / L1 | DCON / d | OAL / L | FLUTES |
|---|---|---|---|---|---|---|
| R0.5×2×D4×50L | 0.5 | 1 | 4 | 4 | 50 | 4 |
| R0.75×3×D4×50L | 0.75 | 1.5 | 3 | 4 | 50 | 4 |
| R1×4×D4×50L | 1 | 4 | 4 | 4 | 50 | 4 |
| R1.25×5×D4×50L | 1.25 | 2.5 | 5 | 4 | 50 | 4 |
| R1.5×6×D3×50L | 1.5 | 3 | 6 | 3 | 50 | 4 |
| R1.5×6×D3×75L | 1.5 | 3 | 6 | 3 | 75 | 4 |
| R1.5×6×D3×100L | 1.5 | 3 | 6 | 3 | 100 | 4 |
| R1.5×6×D4×50L | 1.5 | 3 | 6 | 4 | 50 | 4 |
| R1.5×6×D6×50L | 1.5 | 3 | 6 | 6 | 50 | 4 |
| R1.75×7×D4×50L | 1.75 | 3.5 | 7 | 4 | 50 | 4 |
| R2×8×D4×50L | 4 | 4 | 8 | 4 | 50 | 4 |
| R2×8×D4×75L | 4 | 4 | 8 | 4 | 75 | 4 |
| R2×8×D4×100L | 4 | 4 | 8 | 4 | 100 | 4 |
| R2.5×10×D5×50L | 2.5 | 5 | 10 | 5 | 50 | 4 |
| R2.5×10×D5×75L | 2.5 | 5 | 10 | 5 | 75 | 4 |
| R2.5×10×D5×100L | 2.5 | 5 | 10 | 5 | 100 | 4 |
| R2.5×10×D6×50L | 2.5 | 5 | 10 | 6 | 50 | 4 |
| R3×12×D6×50L | 3 | 6 | 12 | 6 | 50 | 4 |
| R3×12×D6×75L | 3 | 6 | 12 | 6 | 75 | 4 |
| R3×12×D6×100L | 3 | 6 | 12 | 6 | 100 | 4 |
| R3×12×D6×150L | 3 | 6 | 12 | 6 | 150 | 4 |
| R3.5×14×D8×60L | 3.5 | 7 | 14 | 8 | 60 | 4 |
| R4×16×D8×60L | 4 | 8 | 16 | 8 | 60 | 4 |
| R4×16×D8×75L | 4 | 8 | 16 | 8 | 75 | 4 |
| R4×16×D8×100L | 4 | 8 | 16 | 8 | 100 | 4 |
| R4×16×D8×150L | 4 | 8 | 16 | 8 | 150 | 4 |
| R4.5×18×D10×75L | 4.5 | 9 | 18 | 10 | 75 | 4 |
| R5×20×D10×100L | 5 | 10 | 20 | 10 | 100 | 4 |
| R5×20×D10×150L | 5 | 10 | 20 | 10 | 150 | 4 |
| R5.5×22×D12×75L | 5.5 | 11 | 22 | 12 | 75 | 4 |
| R6×24×D12×75L | 6 | 12 | 24 | 12 | 75 | 4 |
| R6×24×D12×100L | 6 | 12 | 24 | 12 | 100 | 4 |
| R6×24×D12×150L | 6 | 12 | 24 | 12 | 150 | 4 |
| R6.5×28×D14×100L | 6.5 | 13 | 28 | 14 | 100 | 4 |
| R7×28×D14×80L | 7 | 14 | 28 | 14 | 80 | 4 |
| R7×28×D14×100L | 7 | 14 | 28 | 14 | 100 | 4 |
| R7×28×D14×150L | 7 | 14 | 28 | 14 | 150 | 4 |
| R8×32×D16×100L | 8 | 16 | 32 | 16 | 100 | 4 |
| R8×32×D16×150L | 8 | 16 | 32 | 16 | 150 | 4 |
| R9×36×D18×100L | 9 | 18 | 36 | 18 | 100 | 4 |
| R9×36×D18×150L | 9 | 18 | 36 | 18 | 150 | 4 |
| R10×40×D20×100L | 10 | 20 | 40 | 20 | 100 | 4 |
| R10×40×D20×150L | 10 | 20 | 40 | 20 | 150 | 4 |
4-Flute Ball Nose End Mill Application Guidance
- 3D Finishing: Select step-over according to the ball radius, required cusp height and target surface finish.
- Flute Selection: Four flutes increase cutting contacts and core strength but provide less chip-gullet volume than a 2-flute design; confirm the operation and chip-removal method before ordering.
- Tool Center: Cutting speed approaches zero at the center of the ball; use suitable tool inclination or toolpath strategy where possible.
- Extended Reach: Reduce radial engagement and feed when using long overall lengths or increased tool overhang.
- Toolholding: Use a clean, low-runout precision holder and keep unnecessary overhang to a minimum.
- Material Check: Confirm the workpiece grade and actual hardness before machining near the HRC45 application limit.
HRC45 4-Flute Ball Nose End Mill Customization
This 4-flute solid carbide ball nose end mill is supplied as a non-standard, made-to-order configuration for steel contouring and finishing applications. Ball radius, cutting diameter, flute length, neck geometry, overall length, shank configuration, cutting-edge preparation and coating are confirmed according to the workpiece grade, hardness, cavity depth, tool engagement and required surface finish. Reference dimensions are available for quotation, but final specifications require technical review before production.
| PARAMETER | MANUFACTURING CAPABILITIES |
|---|---|
| Supply Type | Non-standard, made-to-order production based on confirmed dimensions, machining requirements and order quantity |
| Ball Radius & Cutting Diameter | Ball radius and corresponding cutting diameter can be produced according to the reference configuration or customer drawing |
| Recuento de flautas | Application-specific 4-flute geometry providing more cutting contacts per revolution and a stronger core for controlled steel semi-finishing and finishing |
| Longitud de flauta | Drawing-defined flute length selected according to the machining depth, tool diameter, profile geometry and cutting load |
| Neck & Reach Configuration | Straight-neck or relieved-neck configurations can be reviewed for deep cavities, recessed profiles and restricted-access machining |
| Longitud total | Standard-length reference, long-series and drawing-defined overall lengths can be produced after rigidity and overhang review |
| Shank Configuration | Precision cylindrical shank with drawing-defined shank diameter, clamping length and transition geometry |
| Ball-Nose Geometry | Full-radius cutting profile for 3D contours, mold cavities, fillets and curved surfaces, with profile accuracy confirmed according to the application |
| Core & Flute Geometry | Core diameter, flute depth and chip-gullet geometry are reviewed to balance rigidity, cutting-edge strength and chip evacuation |
| Edge Preparation | Cutting-edge preparation and ball-end grinding can be adjusted according to steel hardness, finishing allowance and required surface quality |
| Selección del revestimiento | Black AlTiN is the primary coating for this HRC45 steel configuration; alternative coatings can be reviewed according to cutting temperature and coolant conditions |
| Milling Application | Geometry can be configured for 3D contouring, mold cavity machining, profile milling, fillet machining, semi-finishing and surface finishing |
| Dimensional Tolerance | Drawing-defined requirements for ball radius, cutting diameter, flute length, neck diameter, shank diameter, overall length, runout and profile accuracy |
Servicios de fabricación personalizada y marca propia
OEM manufacturing and private-label supply options are available for industrial distributors, tooling brands and repeat-production customers. Laser identification, label content, protective packaging and coating presentation can be configured according to the approved product specification and order requirements.
Laser Etching
Custom logos, tool codes, cutting dimensions, coating identification and batch numbers can be marked according to the available shank area.
Custom Labels & Packaging
Individual protective tubes, product labels, specification details, colored packaging tubes and private-label packaging can be reviewed.
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 square 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.
Inspección de bordes
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.
Product & Application FAQs
Answers to common questions about selecting and applying the HRC45 4-Flute Solid Carbide Ball Nose End Mill for Steel.
What materials is this ball nose end mill designed to machine?
What operations are suitable for the ball-nose profile?
How should step-over be selected for surface finishing?
Can the tool cut at the center of the ball nose?
What affects ball-radius and profile accuracy?
Why choose four flutes for steel finishing?
Ordering & Customization FAQs
Information for distributors, tooling brands and customers requesting standard or application-specific ball-nose configurations.
What standard sizes are available?
Can non-standard dimensions or geometry be manufactured?
Are OEM marking and private-label packaging available?
What information is required for an accurate quotation?
Technical Downloads
Use the following references for product selection and starting cutting-data review.
Solid Carbide End Mill Catalog
Review related ball-nose, square-end, corner-radius and application-specific end mill series.
End Mill Speeds & Feeds Guide
Access reference starting parameters for application review and controlled machining trials.
Need a Size or Application Review?
Send the steel grade and verified hardness, required dimensions, machining operation and quantity for configuration and quotation review.
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.
