Cleveland
Cleveland C39021 2-Flute HSS Ball Nose Single End Mill TiN pneumatic accessory
A .75 in diameter HSS ball nose end mill with TiN coating for general milling tasks
- .75 in milling diameter for precise contouring
- 2-flute HSS geometry clears chips efficiently
- TiN coating extends cutting life
- Ball nose profile creates smooth radii
- Single end design simplifies tool changes
Precision milling cutter
The Cleveland C39021 is a 2-flute high-speed steel ball nose end mill with a TiN coating. It suits machinists and maintenance teams who need to cut contoured profiles or rounded slots in general-purpose metals. The single-end design keeps the tool compact for standard milling operations.
Shank and holder check
Verify that your tool holder or collet accepts the shank diameter of this .75 inch milling diameter cutter. Ensure the machine spindle runs true and the workholding is rigid enough for high-speed steel. The tool is non-coolant through so external flood or mist delivery must reach the cutting zone.
Build integration
The TiN coating reduces wear and allows higher cutting speeds than uncoated HSS in steel and cast iron. Two flutes give good chip evacuation in deeper pockets while the ball nose geometry frees you from secondary finishing passes on radii. Pair with a rigid milling machine or CNC for best results.
Highlights
- .75 in milling diameter for precise contouring
- 2-flute HSS geometry clears chips efficiently
- TiN coating extends cutting life
- Ball nose profile creates smooth radii
- Single end design simplifies tool changes
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
What comes in the box with the Cleveland C39021 end mill, and do I need to buy a tool holder separately?
The package contains the single end mill itself. A compatible collet or tool holder for your milling machine must be purchased separately if you do not already have one.
Should I choose the .75 inch diameter version or look for a different size?
This model is manufactured only in a .75 inch milling diameter. If your job requires a different cutting diameter, you will need a different Cleveland part number.
How does the TiN coating on the .75 inch cutter affect tool life in steel?
The titanium nitride coating increases surface hardness and reduces friction, giving longer edge life and better heat resistance than an uncoated high-speed steel ball nose when milling steel.
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