Cleveland C42080 Square End Mill 0.75 in 2 Flute Hss

Product Description

The CLEVELAND C42080 is a double-end, two-flute square end mill machined from high speed steel (HSS). It features a 0.75-inch cutting diameter, a 1.3125-inch length of cut, and a 5.625-inch overall length. The spiral flute geometry and 30-degree helix angle promote efficient chip evacuation across a range of workpiece materials. The centercutting design allows both peripheral and plunge cutting operations. Both ends are usable, extending tool life and reducing per-cut tooling cost. This end mill is suited for use in manual mills and CNC machining centers operated by machinists and toolroom personnel.

The C42080 is rated for use in cast iron, non-ferrous metals, and steel. Its uncoated HSS construction makes it a dependable general-purpose option in lower-speed applications where carbide is not required. The straight cylindrical shank with Weldon flat provides positive grip in standard end mill holders and set-screw-style collet chucks. The regular-length designation keeps the tool rigid during side milling, slotting, and profiling operations in both job shop and production environments.

Key Features

• Double-end design — both ends are usable, doubling effective tool life per unit
• Centercutting geometry allows plunge entry into the workpiece
• 30-degree helix angle promotes smooth cutting action and chip flow
• Spiral flute, right-hand cut and right-hand flute configuration
• Straight cylindrical shank with Weldon flat for secure tool holding
• Uncoated HSS construction suited for cast iron, non-ferrous metals, and steel

Compatibility

Designed for use with standard 0.75-inch end mill holders and set-screw-style tool holders on manual knee mills and CNC machining centers. Rated for cast iron (K), non-ferrous metal (N), and steel (P) workpiece materials per the HD-2 series specification.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Secure the shank fully within the tool holder, engaging the Weldon flat with the set screw to prevent axial pullout under cutting loads. Verify spindle speed and feed rate against the material and tool diameter before engaging the cut. Inspect both cutting ends before use and replace the tool if chipping, excessive wear, or deflection is observed.