HRC55 4-Flute Solid Carbide Square End Mill for Steel Machining
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.
HRC55 Series
4-Flute Solid Carbide Square End Mill
Designed for stable CNC machining of carbon steel, alloy steel and selected pre-hardened mold steel. The rigid four-flute geometry supports accurate shoulders, consistent finishing and reliable performance in general steel machining.
Product Views
Product Details & Configuration
Core Design
Key Features
01
Fine-Grain Carbide
Provides the rigidity, edge strength and wear resistance required for stable steel machining.
02
Balanced 4-Flute Geometry
Four cutting edges support stable engagement and efficient material removal.
03
Precision Square End
Supports accurate 90° shoulders, pockets and flat-bottom machining features.
04
Flexible OEM Options
Dimensions, coating, laser marking, labels and packaging can be configured to order.
Performance Details
Product Advantages
Every structural detail is designed to support stable and repeatable machining.
Advantage 01
Stable Four-Flute Cutting
The rigid carbide body and balanced flute arrangement help control vibration and maintain stable cutting engagement during side milling, profiling and finishing.
- Balanced cutting-edge load
- High rigidity for steel machining
- Consistent engagement under suitable parameters
Advantage 02
Wear-Resistant Cutting Edge
Fine-grain carbide and application-matched coating options help control progressive edge wear and support repeatable results throughout the production cycle.
- Fine-grain carbide substrate
- Multiple coating options
- Reliable edge quality and service life
Advantage 03
Accurate Square-End Geometry
Precision-ground bottom edges and square-end geometry support dimensional control, clean shoulders and consistent surface quality.
- Accurate 90° shoulder machining
- Flat-bottom pocket capability
- Consistent dimensions and finish
Advantage 04
Flexible OEM Supply
Standard sizes and customized configurations are available for distributors, cutting-tool brands and industrial buyers.
- Custom dimensions and flute lengths
- Optional coating and laser marking
- Customized labels and packaging
Product Showcase
HRC55 Square End Mill Product Display
Where It Works
Recommended Applications
Application Note
HRC55 indicates the recommended workpiece-hardness range for this product series under suitable cutting conditions. Actual performance depends on material grade, tool diameter, cutting parameters, machine rigidity, tool-holder condition, coolant strategy and application requirements.
Specifications & Sizes
Reference configuration for the HRC55 4-Flute Carbide Square End Mill for Steel & Alloy Steel Machining. Final diameter, flute length, shank size, coating and tolerance are confirmed according to selected model and machining requirements.
| PARAMETER | REFERENCE CONFIGURATION |
|---|---|
| Tool Type | Solid Carbide Square End Mill |
| Substrate | Fine-grain tungsten carbide substrate |
| Flutes | 4 Flutes |
| Series Hardness | Recommended for steel machining up to HRC55 under suitable cutting conditions |
| Cutting Diameter (D) | Ø1–Ø20 mm |
| Flute Length (L1) | 3–45 mm depending on selected diameter |
| Shank Diameter (d) | 3–20 mm according to tool diameter |
| Overall Length (L) | 50–100 mm in standard configurations |
| Helix Options | 30° / 35° / 45° according to selected configuration |
| Coating Options | AlTiN, TiAlN, TiSiN, AlTiSiN and application-matched coatings |
| Tolerance | General reference up to ±0.01 mm; controlled dimensions confirmed before production |
| Workpiece Materials | Carbon steel, alloy steel, mold steel and pre-hardened steel |
Tool Dimensions & Size Reference
D: Cutting Diameter
L1: Flute Length
d: Shank Diameter
L: Overall Length
Standard Size Matrix
The following dimensions represent common HRC55 4-flute square end mill configurations. All dimensions are in mm. Specification order: D × L1 × d × L. Non-standard diameter, flute length, shank size and overall length can be customized according to machining requirements.| SPECIFICATION | D | L1 | d | L | FLUTES |
|---|---|---|---|---|---|
| Ø1 × 3 × 4d × 50L | 1 | 3 | 4 | 50 | 4 |
| Ø2 × 6 × 4d × 50L | 2 | 6 | 4 | 50 | 4 |
| Ø3 × 9 × 4d × 50L | 3 | 9 | 4 | 50 | 4 |
| Ø3 × 9 × 3d × 50L | 3 | 9 | 3 | 50 | 4 |
| Ø4 × 12 × 4d × 50L | 4 | 12 | 4 | 50 | 4 |
| Ø5 × 13 × 5d × 50L | 5 | 13 | 5 | 50 | 4 |
| Ø5 × 13 × 6d × 50L | 5 | 13 | 6 | 50 | 4 |
| Ø6 × 15 × 6d × 50L | 6 | 15 | 6 | 50 | 4 |
| Ø8 × 20 × 8d × 60L | 8 | 20 | 8 | 60 | 4 |
| Ø8 × 24 × 8d × 60L | 8 | 24 | 8 | 60 | 4 |
| Ø9 × 25 × 10d × 75L | 9 | 25 | 10 | 75 | 4 |
| Ø10 × 25 × 10d × 75L | 10 | 25 | 10 | 75 | 4 |
| Ø10 × 30 × 10d × 75L | 10 | 30 | 10 | 75 | 4 |
| Ø12 × 30 × 12d × 75L | 12 | 30 | 12 | 75 | 4 |
| Ø14 × 45 × 14d × 100L | 14 | 45 | 14 | 100 | 4 |
| Ø20 × 45 × 20d × 100L | 20 | 45 | 20 | 100 | 4 |
Ordering Information
Please provide tool dimensions, workpiece material, machining operation, required quantity and any OEM requirements when requesting a quotation.HRC55 2-Flute Square End Mill Customization
Cutting diameter, flute length, overall length, helix angle, square-end geometry, cutting-edge preparation and coating can be configured for steel-milling applications. Standard configurations use a 2-flute design with 35° or 38° helix options, while non-standard dimensions and selected geometry adjustments can be reviewed according to the workpiece grade, hardness, milling operation, tool engagement and required dimensional accuracy.
| PARAMETER | MANUFACTURING CAPABILITIES |
|---|---|
| Cutting Diameter | Standard Ø1–Ø20 mm range based on the listed series, with selected intermediate and non-standard diameters reviewed according to the confirmed tool drawing |
| Flute Count | Standard 4-flute configuration for side milling, profiling, shoulder milling, pocket milling and selected semi-finishing or finishing operations |
| Flute Length | Standard flute lengths from 3 to 45 mm in the listed series, with selected drawing-defined cutting lengths reviewed according to feature depth and tool rigidity |
| Shank Configuration | Precision cylindrical shank with standard Ø3–Ø20 mm reference sizes or drawing-defined shank diameter and clamping length |
| Overall Length | Standard 50, 60, 75 and 100 mm configurations in the listed series, with selected custom lengths subject to rigidity and application review |
| Helix Angle | 30°, 35° or 45° options selected according to the workpiece grade, chip formation, cutting load and milling operation |
| Four-Flute Geometry | Application-matched flute form, core thickness, helix and rake geometry reviewed to balance rigidity, cutting stability and chip evacuation |
| Square-End Geometry | Precision-ground flat-bottom profile for pockets, profiles, flat floors and defined 90° shoulders, with center-cutting capability confirmed by the selected configuration |
| Edge Preparation | Cutting-edge preparation, end-face grinding, gash geometry and corner condition reviewed according to the tool diameter, steel hardness and cutting load |
| Coating Selection | AlTiN, TiAlN, TiSiN, AlTiSiN, TiN or another application-specific coating selected according to the steel grade, cutting temperature, coolant strategy and required tool life |
| Workpiece & Application | Configured for carbon steel, alloy steel, mold steel and confirmed pre-hardened steel within the HRC55 series range, primarily for side milling, profiling, shoulder milling, pocket milling and finishing |
| Dimensional Tolerance | Standard production tolerances or drawing-defined requirements for cutting diameter, flute length, shank diameter, overall length, runout and square-end geometry |
OEM & Private Label Services
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.
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.
Product & Application FAQs
Answers to common questions about selecting and applying the HRC55 4-Flute Solid Carbide Square End Mill Ø1–12 mm for Steel.
What materials is this square end mill designed to machine?
Why use the 4-flute configuration for this application?
What milling operations are suitable for this square-end design?
Does every diameter from Ø1 to Ø12 mm use the same cutting parameters?
Which coating or surface treatment should be selected?
What machining conditions should be reviewed before use?
Ordering & Customization FAQs
Information for distributors, tooling brands and customers requesting standard or application-specific 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 square-end, ball-nose, 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 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.
