30x124mm F/L x 270mm OAL 4MT T/S Armour Piercing Drill 6605250 250mm 4770 - 1/2" dr

250mm 4770 - 1/2" dr universal 4785 - 1/2" dr sliding t bar 300mm

graphite and molybdenum

12-point head

Cutter diameter 1-33/64"

Overall length 225mm

30x124mm F/L x 270mm OAL 4MT T/S Armour Piercing Drill 6605250 250mm 4770 - 1/2" drUsed for heavy duty drilling in work Hardening steel with a manganese content of 12 14 percent . 4 Morse taper Overall length 270mm Flute length 124mm 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