Drill Bit Set ALPEN Alpen Cassette PZ HSS Cobalt 1897 3-edge TM 6 mm, 6 pcs

ALPEN Alpen Cassette PZ HSS Cobalt 1897 is a 6-piece drill bit set designed for demanding drilling tasks. Each drill bit has a 6 mm diameter, a TM shank and a 3-edge (3-kant) geometry, and is manufactured from HSS cobalt steel to provide improved heat resistance and wear durability compared with standard high-speed steels. The set is intended for use in professional workshops and for applications where reliable hole quality and longer tool life are required.

Advantages

The 3-edge geometry of these drill bits ensures stable cutting action and good centring properties, reducing walking and producing cleaner holes. HSS cobalt material increases hardness at elevated temperatures and improves resistance to abrasion, extending service life when drilling into tougher or heat-generating materials. The TM shank allows secure clamping in standard chucks and quick interchangeability during workshop operations.

Suitable for

• Drilling in stainless steel and other hard metals
• Workshop and professional metalworking tasks
• Repair, maintenance and fabrication projects
• Applications requiring consistent hole diameter and clean edge finish

Key specifications

• Material: HSS cobalt steel
• Geometry: 3-edge (3-kant) point
• Shank type: TM shank
• Diameter: 6 mm
• Quantity in set: 6 pieces

How to use

Select an appropriate cutting speed and feed for the work material and secure the drill bit in a compatible chuck with a TM shank. Clamp the workpiece firmly to prevent movement. Use cutting fluid or coolant when drilling stainless steel or other alloys to reduce heat build-up and extend tool life. Start drilling at low speed to establish the centre, then increase speed according to the material and drill diameter while maintaining steady pressure. Withdraw the bit periodically to clear chips when drilling deep holes.

Usage recommendations

For best results, use coolant with HSS cobalt bits when working with stainless steels or high-alloy materials. Maintain correct speeds and feeds to avoid overheating: moderate speeds for hard metals and higher speeds for softer materials. Store the set in a dry place to prevent corrosion and inspect bits for wear or chipping before reuse.