Cleveland
Cleveland Cobalt M42 Square Tool Bit 855 44553 pneumatic accessory
Cobalt M42 square tool bit for lathe work, 5/8 inch square by 4-1/2 inch length
- Cobalt M42 steel resists wear for longer tool life
- Square blank suits right-hand and left-hand lathe work
- Non-beveled edges simplify custom grinding to exact profiles
- 5/8 in width and height fit standard tool holders
- 4-1/2 in overall length provides ample reach for deep cuts
Cobalt M42 Square Tool Bit 855
This Cleveland square tool bit is made from Cobalt M42 high-speed steel for machining hard materials on lathes. It measures 5/8 inch square by 4-1/2 inches long and features a non-beveled, right-and-left-hand profile ready for shaping.
Suited for manual lathe operators cutting tough
Machinists who need a durable blank for custom tool geometries will value the Cobalt M42 composition. Shops running only CNC toolholders or requiring pre-ground cutting edges should select a different product.
Cobalt M42 grade determines wear resistance
The M42 designation confirms 8% cobalt content for high red-hardness when turning stainless steels and superalloys. Verify your toolpost accepts a 5/8 inch square shank before ordering.
Highlights
- Cobalt M42 steel resists wear for longer tool life
- Square blank suits right-hand and left-hand lathe work
- Non-beveled edges simplify custom grinding to exact profiles
- 5/8 in width and height fit standard tool holders
- 4-1/2 in overall length provides ample reach for deep cuts
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
Will the Cobalt M42 material on the 855 square tool bit need regrinding after heavy use?
Cobalt M42 retains hardness at high temperatures so the edge lasts longer than standard high-speed steel, but it will still require regrinding once the cutting face wears down.
What dimension limits the depth of cut on this 5/8-inch square tool bit?
The 5/8-inch width and height set the maximum cross-section, so the tool cannot take a deeper cut than its own square profile allows.
Does the 4-1/2-inch length cause vibration or heat buildup during extended lathe runs?
The shorter 4-1/2-inch length reduces overhang, which helps limit chatter and keeps the tip cooler during long turning sessions.
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