Twist drill bit KWB COBALT HSS CO 1 piece right hand rotation

The KWB COBALT HSS CO twist drill bit is a precision ground, right-hand rotation drill made from high-speed steel alloyed with 5% cobalt. Finished in a bronze colour, the bit features a 135° tip angle and a cross-ground geometry according to DIN 1412 C. It is self-centering with a cylindrical shank and is intended for industrial use where high heat resistance and durability are required.

Advantages

This KWB COBALT HSS CO drill bit provides improved heat resistance and wear resistance due to the cobalt alloy, enabling longer tool life when drilling difficult-to-machine materials. The precision ground, cross-ground tip ensures accurate, clean holes and reliable centering without secondary spotting. The cylindrical shank allows secure mounting in standard chucks.

Suitable for

• Steel and alloyed steel
• Stainless steel grades A2 and A4
• Cast iron and cast steel
• Bronze
• Plastics

Key specifications

• Brand: KWB
• Model / MPN: 248645
• EAN: 4009312486454
• Type: Twist drill bit, right hand rotation
• Material: HSS with 5% cobalt (HSS-Co)
• Tip angle: 135°
• Geometry: Cross-ground to DIN 1412 C, self-centering
• Shank: Cylindrical
• Finish: Bronze colour
• Quantity: 1 piece

How to use

Secure the cylindrical shank of the KWB COBALT HSS CO drill bit in a compatible chuck. Select an appropriate cutting speed and feed for the material being drilled; slower speeds and steady feed are recommended for stainless and alloyed steels to reduce heat buildup. Use suitable cutting fluid for metal drilling when necessary to improve cooling and chip evacuation. Drill with firm, consistent pressure and withdraw periodically if deep holes are required to clear chips.

Usage recommendations

For best results when drilling stainless and high-alloy steels, use lower cutting speeds, adequate cutting fluid, and moderate feed rates to extend tool life and maintain hole quality. Inspect the bit before use and replace when wear or chipping affects performance.