Cleveland
Cleveland C40359 .12 Corner Radius End Mill
Powdered-metal corner-radius end mill with .12 radius and three high-helix flutes for smooth profiling
- TypeMilling
- .12 in corner radius reduces stress concentration
- 3-flute design balances chip clearance and finish quality
- PM+ HSS-E substrate resists wear in tough materials
- TiCN coating extends tool life under heat
- High-helix geometry improves cutting action in deep slots
1 in Powdered Metal End Mill
The Cleveland C40359 is a 1-inch diameter corner-radius end mill built from powdered metal with a TiCN coating. Its 3-flute high-helix design and Weldon flat shank suit general milling in ferrous and non-ferrous materials. Machinists needing a single roughing or finishing cutter for CNC or manual mills will find it ready for standard tool holders.
High-helix geometry limits chip clearance
The aggressive helix angle improves shearing action but reduces flute volume compared with lower-helix tools. Deep slotting or heavy radial engagement can pack chips, so stepped passes or reduced axial depth are advised. Coolant or air blast helps evacuate chips from the .12 in corner radius area during prolonged cuts.
Verify shank fit and machine rigidity
Confirm your tool holder accepts a Weldon flat of the correct diameter before ordering. Powdered metal is tougher than standard HSS but still demands a rigid spindle and secure workholding to prevent chatter. The 4 1/2 in overall length requires sufficient Z-axis travel and clearance for the intended workpiece height.
Highlights
- .12 in corner radius reduces stress concentration
- 3-flute design balances chip clearance and finish quality
- PM+ HSS-E substrate resists wear in tough materials
- TiCN coating extends tool life under heat
- High-helix geometry improves cutting action in deep slots
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Milling |
Questions about this item
Which corner radius size should I select for this end mill?
This specific Cleveland C40359 model is supplied with a fixed .12 inch corner radius, so there is no alternative radius option to choose for this part number.
What does the .12 inch corner radius deliver when the cutter is in the spindle?
The .12 inch radius strengthens each flute corner, reduces chipping during heavy cuts, and leaves a consistent fillet on the workpiece floor.
How does the Weldon flat shank interface limit tool-holding choices?
The Weldon flat requires a set-screw style holder that clamps onto the flat, preventing use in plain collets or shrink-fit holders without an adapter.
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