Description
Used for heavy duty drilling in work Hardening steel with a manganese content of 12-14 percent .
2 Morse taper
Overall length 179mm
Flute length 81mm
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
2 Morse taper
Overall length 179mm
Flute length 81mm
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
