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Twist drill bit KWB 248030 1 pc Right hand rotation
The KWB 248030 twist drill bit is a single-piece HSS-Co tool manufactured to DIN 338 and intended for precise drilling in a variety of materials. Made with a 5% cobalt alloy, this right-hand cutting drill is suitable for demanding applications in alloyed and unalloyed steel, stainless steel (V2A/V4A), grey cast iron, cast steel, bronze and plastics. The 135° point angle with a split point according to DIN 1412 C provides self-centring performance and reduces the tendency to skid, while the parallel shank ensures compatibility with standard drilling machines.
The cobalt-enriched HSS composition increases heat and wear resistance for longer tool life in tougher materials. The 135° split point enables accurate, self-centring starts without the need for pilot holes, and the DIN 338 geometry guarantees dimensional accuracy and interchangeability. The straight shank simplifies mounting in chucks and holders used on common drilling machines.
Secure the drill bit in the machine chuck ensuring it is seated on the parallel shank. Select appropriate cutting speeds and feed rates for the workpiece material—lower speeds and steady feed for stainless steels and higher speeds for softer metals and plastics. Use suitable cutting lubricant or coolant when machining steels and cast irons to extend tool life and improve surface finish. Start drilling with steady pressure until the split point has engaged, then continue with uniform feed to the required depth.
For best results, match spindle speed and feed to the material being drilled and apply cutting fluid when working with steels and cast irons. Replace the drill when wear or chipping appears on the cutting edges to maintain accuracy and prevent workpiece damage.
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