

R Angle End Mills
The EBR40A is designed for high-efficiency general-purpose metal cutting, featuring a 4-flute, 55° helix angle design. Combined with a high-wear-resistant carbide substrate and a TiN gold coating, it offers high chip removal efficiency, low cutting resistance, and excellent surface finish. It is an ideal choice for machining various materials, including steel, stainless steel, and aluminum alloys. In practical operation, selecting the appropriate tool type and parameters based on specific machining requirements is crucial to ensuring machining quality. The tool maintains stability under high speeds and high loads, avoiding vibration and chipping. This ensures consistent and reliable machining, making it a good choice for various applications.
| Part number | HF310 |
|---|---|
| Material | Ultrafine Tungsten Carbide Alloy |
| Product Name | 4-Flute Tungsten Carbide End Mill – 55º |
| OEM / ODM | Made to your samples or drawings |
| Specifications | Ø10.0 × 100L × Ø10.0 × 4X |
| Packaging (mm) | 23.5 × 18.5 × 110L |
| Blade Diameter D | Ø10.0mm |
| Blade Length H | 100.0mm |
| Shank diameter d | Ø10.0mm |
| Overall Length L | 100.0mm |
| Coating | TiN |
| MOQ | 2 pcs |
| Lead time | 1 week |
| Origin | Shenzhen, China |
Design details engineered for accuracy, tool life and process stability.
Enables smoother cutting entry, significantly reducing cutting resistance and vibration, especially suitable for high-speed machining of non-ferrous metals such as aluminum alloys, achieving a surface finish below Ra0.6μm.
Multiple flutes participate in cutting, increasing efficiency by over 50% compared to 2-flute tools. Optimized chip flute space improves chip removal efficiency by 30%, preventing chip clogging.
Surface hardness HV2800, low coefficient of friction as low as 0.3, effectively reducing built-up edge formation, extending tool life by 2-2.5 times compared to uncoated tools.
Core diameter is 10% larger than ordinary end mills, increasing tool rigidity and maintaining machining stability even at high feed rates.
The edge radius is controlled within 0.02mm, balancing edge sharpness and chipping resistance, adapting to the machining needs of various materials.
The substrate hardness reaches HRC64, combining high hardness and toughness, with twice the chipping resistance of ordinary end mills.
Four-flute end mills are suitable for various difficult-to-machine alloys, including SUS, chromium-nickel-iron alloys, and titanium alloys, and different tool materials can be selected depending on the material.
Send your workpiece material and cutter dimensions. We supply standard end mills and special milling cutters made to your samples or drawings.