57-198 HSS-TiN metal drill bits 1.5-6.5 mm, set of 13 pcs.

Brand: NEO TOOLS

HSS-TiN metal drill bits 1.5-6.5 mm, set of 13 pieces 57-198 by NEO TOOLS are drills that are deeply ground according to DIN 338 and made of 9341 steel; they have a tip angle of 135° with C-type shear correction and a cylindrical chuck for easy drilling without scoring. An additional titanium nitride (TiN) coating reduces cutting resistance and helps maintain high hole quality - especially when working on drill stands. The working part lengths are 1.5:18 mm, 2:24 mm, 2.5:30 mm, 3:33 mm, 3.2:36 mm, 3.5:39 mm, 4:43 mm, 4.2:43 mm, 4.8:52 mm, 5:52 mm, 5.5:57 mm, 6:57 mm, 6.5:63 mm, and the total is 1.5:40 mm, 2:49 mm, 2.5:57 mm, 3:61 mm, 3.2:65 mm, 3.5:70 mm, 4:75 mm, 4.2:75 mm, 4.8:86 mm, 5:86 mm, 5.5:93 mm, 6:93 mm, 6.5:101 mm; while the recommended speed range for metal is 1.5:2550-3800 rpm, 2:3650-4000 rpm, 2.5:2900-3200 rpm, 3:2450-2650 rpm, 3.2:2300-2500 rpm, 3.5:2100-2300 rpm, 4:1850-2000 rpm, 4.2:1750-1900 rpm, 4.8:1500-1650 rpm, 5:1450-1600 rpm, 5.5:1350-1450 rpm, 6:1200-1300 rpm, 6.5:1150-1250 rpm. The purpose of drills from NEO TOOLS includes steel, cast iron, non-ferrous metals (copper, aluminium, brass) and plastics.