Cleveland Golf End Mill Cobalt 1/8 4 FL SGL Sq End CC

End Mill Cobalt 1/8 Inch 4 Flute

This single-end square end mill is made from cobalt steel for general-purpose finishing work. It suits machinists and maintenance technicians who need a bright, uncoated cutter for light production or repair tasks. The right-hand helix and centre-cutting design allow plunging and side milling in a range of ferrous and non-ferrous materials.

Practical Limits of a 30 Degree Helix

The 30-degree helix angle gives a balanced chip evacuation rate that works well for finishing passes but is not optimised for heavy roughing or high-speed aluminium machining. Bright uncoated surfaces increase friction in abrasive alloys, so tool life drops when cutting hardened steels or titanium without flood coolant. Users should match feed and speed to the material rather than pushing the geometry beyond its finishing intent.

Build Quality and Shank Implications

The 3/8-inch shank fits standard ER collets and Weldon holders, letting the cutter sit securely in most manual and CNC mill setups. A 0.000-inch corner radius means sharp corners that can chip if the workpiece has interrupted cuts or hard scale. Bright finish shows wear visibly, helping operators judge regrind timing, but it offers no lubricity benefit in dry cutting conditions.