Cleveland C40062 Corner Radius End Mill 3/4 in 3 Flute

Product Description

The CLEVELAND C40062 is a corner radius end mill designed for milling operations that require a radiused cutting edge to reduce stress concentrations and extend tool life at the corner. Built in the PM-538R series, it features a 3/4 inch cutting diameter, a 2-1/2 inch length of cut (LOC), and a 3-flute geometry with a 42-degree helix angle. The bright/uncoated finish suits a range of ferrous and non-ferrous materials. Centercutting capability allows it to plunge directly into workpiece material. Shank diameter matches the cutting diameter at 3/4 inch, making it compatible with standard collet and end mill holders.

This end mill is suited for use in CNC machining centers, knee mills, and manual or automated milling setups across job shop, tool and die, and general metalworking environments. The coarse pitch and right-hand cutting and flute direction make it a standard choice for conventional and climb milling passes. The PM-538R series is intended for applications where corner protection and chip clearance are both critical, such as pocket milling, slotting, and profiling operations on steel, alloy steel, and similar materials.

Key Features

• Corner radius geometry reduces edge chipping and stress concentration at the tool corner
• 3-flute, coarse pitch design balances chip evacuation with rigidity in the cut
• 42-degree helix angle promotes smooth cutting action and improved surface finish
• Centercutting construction allows direct plunge entry without a pilot hole
• Bright/uncoated finish suitable for use with cutting fluid on a variety of workpiece materials
• 4-3/4 inch overall length (OAL) provides reach for moderate-depth applications

Compatibility

Designed as an OEM-style replacement or direct-use end mill for standard 3/4 inch collets, end mill holders, and shrink-fit toolholders used in CNC and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist familiar with tool holding and runout requirements. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank to the full recommended engagement depth in the holder and torque set screws or collet nuts to the toolholder manufacturer's specifications. Inspect the cutting edges and corner radius for chips or wear before each use.