Solid Carbide Drill, Plain Shank, 180 Deg, TiAlN Coated, 10.8 mm

Special point geometry for generating 180 Deg flat-bottomed holes. Low radial forces even when spot drilling on faces with up to 45 Deg slope. Flute geometry for optimum chip evacuation. With 4 guide chamfers to stabilize the drill in the hole. Advantage: The 180 Deg point angle permits drilling and counterboring in a single operation. Recommendation: When using the solid carbide 180 Deg drill it is absolutely essential for process reliability: when spot drilling on flat surfaces to drill a pilot hole 1xD using pilot drill No. 122736. when spot drilling on sloping surfaces up to 15 Deg : reduce the feed rate f to 50 %, up to 30 Deg: reduce the feed rate f to 40 % and up to 45 Deg: reduce the feed rate f to 25 % of the stated value. After spot drilling, the normal feed rate value can be used. Note: Flute length LC = L2 + 1.5 x DC.