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Drill bit GRAPHITE universal cylindrical 12 mm (57H308)
Drill bit GRAPHITE universal cylindrical 12 mm (57H308)
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Drill bit GRAPHITE universal cylindrical 12 mm (57H308)
Leave your address - as soon as the price of the product goes down, you'll know about it right away
Drill bit GRAPHITE universal cylindrical 12 mm (57H308)
Drill bit GRAPHITE universal cylindrical 12 mm (57H308)
GRAPHITE universal cylindrical drill bit, 12 mm diameter, is designed for general-purpose drilling in a variety of common materials used in metalworking and construction. The straight cylindrical shank provides secure mounting in standard chucks of hand drills and drill presses, making the bit suitable as a replacement in tool sets or for routine workshop and on-site tasks. The geometry balances penetration and chip evacuation for typical drilling jobs.
This 12 mm drill bit offers reliable concentricity due to its cylindrical shank, ensuring stable rotation and reduced runout in standard chucks. The universal point geometry makes it compatible with a wide range of materials encountered in general construction and metalworking. Its construction is intended to deliver consistent hole size and acceptable tool life for everyday drilling tasks.
Secure the drill bit in the chuck, ensuring the straight shank is fully gripped and the bit is centered to minimize runout. Select appropriate spindle speed and feed rate for the material you are drilling: lower speeds for harder metals, medium speeds for general steel and wood, and higher speeds for softer materials. Use cutting fluid or coolant when drilling metals to reduce heat and prolong bit life. Clear chips regularly to maintain cutting efficiency and avoid clogging.
Before drilling, mark the hole position and pilot where necessary. Clamp the workpiece securely and wear appropriate personal protective equipment. Replace worn or damaged bits to maintain hole quality and safe operation.
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