R4 (8mm) Steel Chamfer End Mill
30-Day Free Returns
Free Worldwide Shipping
BEYOND R4 (8mm) Steel Chamfer End Mill – Arc Type Up & Down Chamfer Cutter
The BEYOND R4 (8mm) Steel Chamfer End Mill is a high-performance cutting tool designed for precise edge rounding and chamfering on steel components. The unique arc-type up & down blade geometry allows both top and bottom chamfering in a single pass, improving productivity and achieving a fine surface finish.
Key Features
- Cutting Diameter (d1): 8mm
- Chamfer Radius (R): R4
- Shank Diameter (d2): 8mm
- Overall Length (L): 60mm
- Material: Ultra-fine tungsten carbide for durability and precision.
- Design: Arc-shaped up & down edges for dual-side chamfering.
- Coating: AlTiN/TiAlN for heat and oxidation resistance.
- Applications: Carbon steel, alloy steel, die steel, pre-hardened steel.
- Tool Type: CNC chamfering, edge-finishing, and deburring tool.
Technical Specifications
| Model | Radius (R) | Cutting Diameter (d1) | Shank Diameter (d2) | Overall Length (L) | Material |
|---|---|---|---|---|---|
| R4-8MM | R4 | 8mm | 8mm | 60mm | Tungsten Carbide |
Advantages
- Performs simultaneous top and bottom chamfering for efficient processing.
- Arc geometry ensures smooth and burr-free edge transitions.
- High precision cutting suitable for steel and hard materials.
- Stable performance at high-speed CNC operations.
- Extended tool life due to premium carbide and advanced coating.
Recommended Cutting Parameters
- Cutting Speed (Vc): 100–160 m/min
- Feed per Tooth (fz): 0.02–0.05 mm/tooth
- Depth of Cut (ap): 0.4–1.2 mm
Applications
The R4 (8mm) Steel Chamfer End Mill is widely used for chamfering, rounding, and deburring of steel parts in mold making, die finishing, and precision mechanical component production. Its dual-side cutting function reduces tool changes and enhances efficiency for mass production.
Why Choose BEYOND?
BEYOND delivers precision CNC cutting tools engineered for accuracy and durability. Each chamfer cutter is made from premium carbide with strict quality control, ensuring excellent results in demanding metalworking environments.