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- 2 flute indexable Flat Bottom Drill Body
- Coolant thru body
- Torx wrench and insert screws are included, additional screws are available here....
- Torque insert screws to 15 in/lbs
- SOMT070306 Inserts are not included but available here...
- Rear of shank is threaded M16 x 1.5, optional coolant plugs are available here....
- After drilling hole, drill can outer insert can be used as a boring bar
- Inserts can be indexed 4 times in these drills
- Maritool Part# FBD-875-4D-1U
Speed and Feeds
Material sfpm Feed per revolution
Mild Steels 600-800 .003-.006
Medium Carbon Steels 400-500 .003-.005
High Alloy Steels 200-300 .0025-.004
Tool Steels 200-250 .0025-.004
Stainless Steels 300-400 .003-.004
Non Ferrous Metals 700-1000 .005-.009
Proper coolant pressure thru drill is critical
If long chips arise, introduce a pecking cycle
Same feedrate or 1.5X can be used when boring
