15x89mm F/L x 187mm OAL 2MT T/S Armour Piercing Drill 6788 ageing and sludge formation

ageing and sludge formation

0 SR20D# 4WD

box pleat for added movement

OLDSMOBILE CUTLASS SUPREME 1968-1970

HiKOKI 20x34mm Multi Tool Starlock Blade - Metal/Wood

15x89mm F/L x 187mm OAL 2MT T/S Armour Piercing Drill 6788 ageing and sludge formationUsed for heavy duty drilling in work Hardening steel with a manganese content of 12 14 percent . 1 Mosre taper Overall length 819mm Flute length 89mm 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