HRC55 4-Flute Solid Carbide Corner Rounding End Mill for Steel & Aluminum
HRC55 4-flute solid carbide corner rounding end mill for external edge radii on steel and aluminum. Select the radius and material-specific configuration to suit your drawing.
- Defined radius profiles for consistent rounded edges.
- Four flutes support stable finishing.
- Precision-ground solid carbide cutting edges.
Precision Radius
Uniform Edge Rounding
4-Flute Design
Stable Finishing
Solid Carbide
High Rigidity
R1–R6 Options
Steel & Aluminum
4-Flute Carbide Corner Rounding End Mill
This carbide corner rounding cutter forms rounded profiles along accessible external edges. Select the corner rounding end mill by radius, pilot dimensions and usable reach. Match cutting geometry, coating and machining parameters to steel or aluminum applications.
Key Applications
Edge Rounding — Precision machining of external corners for uniform edge radii, smooth finishes and consistent profiles.
Radius Profiling — Forming smooth, consistent convex radius profiles on compatible component edges.
Edge Finishing — Removing sharp corners and producing clean, rounded edge finishes.
Best for: Precision external corner rounding and edge finishing in steel and aluminum, using application-matched cutting geometries to achieve smooth, uniform radii, consistent surface quality.
Key Features
Precision Radius Profile
Ground concave cutting edges for consistent external corner radii.
4-Flute Geometry
Four cutting edges support stable form milling and finishing.
Solid Carbide Construction
Rigid carbide body for precision CNC radius machining.
R1–R6 Radius Options
Multiple standard radii with custom profiles available.
Steel & Aluminum Tool Selection
For Steel
Select suitable cutting geometry and wear-resistant coatings according to steel grade and hardness.
For Aluminum
Choose sharp cutting edges and low-adhesion configurations for clean radius finishing.
Confirm radius, shank diameter and material-specific configuration before ordering.
Corner Rounding End Mill Specifications
Reference dimensions for 4-flute solid carbide corner rounding end mills with R1–R6 radius options for precision external edge radiusing. All dimensions are in millimeters.
R = Corner Radius | d = Shank Diameter | L = Overall Length | T = Flutes
Technical Configuration
| Tool Type | Solid Carbide Corner Rounding End Mill |
| Product Series | HRC55 |
| Flute Count | 4 Flutes |
| Radius Range | R1 / R1.5 / R2 / R2.5 / R3 / R4 / R5 / R6 mm |
| Workpiece Materials | Steel / Aluminum (Material-Specific Configurations) |
| Applications | External Corner Rounding / Edge Radiusing / Profile Finishing |
Standard Sizes & Dimensions
R1–R6 reference configurations for precision corner rounding. All dimensions are in mm.
| Specification | Radius R | Shank Dia. d | Overall Length L | Flutes |
|---|---|---|---|---|
| R1 × 4 × 50 × 4T | 1 | 4 | 50 | 4 |
| R1.5 × 6 × 50 × 4T | 1.5 | 6 | 50 | 4 |
| R2 × 6 × 50 × 4T | 2 | 6 | 50 | 4 |
| R2.5 × 8 × 50 × 4T | 2.5 | 8 | 50 | 4 |
| R3 × 8 × 50 × 4T | 3 | 8 | 50 | 4 |
| R4 × 10 × 60 × 4T | 4 | 10 | 60 | 4 |
| R5 × 12 × 75 × 4T | 5 | 12 | 75 | 4 |
| R6 × 14 × 75 × 4T | 6 | 14 | 75 | 4 |
Note: Select the radius according to the required external corner profile. Confirm geometry and material-specific configurations before ordering.
Corner Rounding End Mill Customization
Custom corner radii, cutting profiles, shank diameters, neck geometry, overall lengths and coatings are available for solid carbide corner rounding end mills. Material-specific configurations for steel and aluminum can be reviewed from drawings or samples.
OEM & Private Label
Custom laser marking, tool codes, labels and protective packaging are available for distributor and OEM orders.

Quality, Inspection & Delivery
Our solid carbide corner rounding end mills undergo inspection of radius accuracy, cutting-edge geometry, dimensions and runout to support consistent quality for steel and aluminum applications.
Corner Rounding End Mill FAQs
Common questions about solid carbide corner rounding end mills for steel and aluminum machining.
What is a corner rounding end mill used for?
What is the difference between a corner rounding end mill and a corner radius end mill?
How do I select the correct corner rounding radius?
Can the same corner rounding cutter machine steel and aluminum?
What are the advantages of a 4-flute corner rounding end mill?
Can a corner rounding cutter remove sharp edges and burrs?
Sizes, Customization & OEM FAQs
Size selection and ordering information for distributors and OEM buyers.
What standard corner rounding end mill sizes are available?
Can custom corner radii and cutter dimensions be manufactured?
Do you offer OEM and private-label corner rounding cutters?
What information is required for a corner rounding end mill quotation?
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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