Solid Carbide Drill, 21 mm Dia, 140 Deg Point Angle, TiAlN Coated, Plain Shank

Cutting chisel edge with high centring accuracy due to strong core and special point geometry. High roundness and alignment accuracy of the deep hole- thanks to 4 guide chamfers. Outstanding chip evacuation due to 4 internal cooling channels from dia 3.8 mm. Up to 3.7 mm dia with 2 internal cooling channels. Straight major cutting edges with honed edges and special flute profile for short chips- even on long chipping materials. Attention: Sizes ending with X = cutter dia tolerance h7. Note: Flute length LC = L2 + 1.5 x DC. Standard: DIN 6537 Tolerance nominal dia : m6 Number of cutting edges Z: 2 Tolerance nominal dia : m6 recommended maximum drilling depth L2: 69.5 mm Overall length L: 153 mm Shank dia Ds: 20 mm Feed f in stainless steel > 900N/mm2: 0.25 mm/rev.