40x152mm F/L x 298mm OAL 4MT T/S Armour Piercing Drill Set M16x90 ZP drop forged from carbon steel

drop forged from carbon steel raised panel design with polished heads

JLBM53PA - Handle for JLBM50PA and JLBM60PA chucks only Description :

therefore this part is finished with higher hardness to improve anti-wear

A vertical slot must be cut first

Used to ream holes to suit standard Imperial taper pins Flute length 114

40x152mm F/L x 298mm OAL 4MT T/S Armour Piercing Drill Set M16x90 ZP drop forged from carbon steelUsed for heavy duty drilling in work Hardening steel with a manganese content of 12 14 percent . 4 Morse taper Overall length 298mm Flute length 152mm Operating Conditions cutting speed between 3 4 meters per minute a feed of only 60 percent of standard drill Very rigid machine set up drilled without coolant Precautions drill must not touch work without feed being engaged no marking of work surface ie centre punch