RUKO KEB-HM Weldon 41.0mm High-Performance Solid Carbide Drill Bit with Internal Coolant

For machinists and production shops drilling large-diameter holes in steel, stainless steel, cast iron, and non-ferrous metals, the RUKO KEB-HM Weldon 41.0mm drill bit delivers high-performance results. Its solid carbide construction and TiAlN coating ensure durability and extended tool life, while the internal coolant supply efficiently evacuates chips and reduces heat at the cutting edge.

Key specifications

• Nominal diameter: 41.0 mm
• Shank type: Weldon (DIN 1835 B), 32 mm diameter
• Cutting material: Solid carbide (VHM)
• Coating: TiAlN (Titanium Aluminum Nitride)
• Point angle: 140°
• Number of flutes: 2
• Overall length: 280 mm
• Flute length: 205 mm (5xD)
• Coolant supply: Internal (IK)

Why choose it

This drill bit is engineered for high-performance drilling in demanding materials. The TiAlN coating provides heat resistance and wear protection, while the internal coolant channels improve chip evacuation and allow higher cutting speeds. The Weldon shank ensures secure clamping and torque transmission in milling machines and machining centers.

Ideal use cases

• Drilling large holes in steel and stainless steel components
• Machining cast iron and non-ferrous metals in production environments
• Applications requiring high precision and long tool life

Good to know

The drill bit has a diameter tolerance of h7, ensuring consistent hole quality. It is suitable for a wide range of ISO material groups: P (steel), M (stainless steel), K (cast iron), N (non-ferrous metals), S (superalloys), and H (hardened materials).