Gws 310489 Square End Mill 0.75 in 4 Flute Solid Carbide

Product Description

The GWS 310489 is a solid carbide square end mill designed for high-performance milling across a broad range of workpiece materials. It features a 0.75-inch cutting diameter and a 2.75-inch length of cut, making it well suited for slotting, profiling, and peripheral milling operations. The AlCrO-MAX coating provides thermal and oxidation resistance, supporting extended tool life in demanding cutting environments. With four flutes and a 38-degree helix angle, the 310489 delivers efficient chip evacuation and smooth surface finishes. It is a centercutting design, allowing direct plunge entry into the workpiece. Licensed machinists and CNC mill operators are the primary users.

The 310489 is rated for use on a wide material range including ferrous steels, cast irons, stainless steels, non-ferrous metals, aluminum alloys, heat-resistant superalloys, and titanium alloys, corresponding to ISO material groups H, K, M, N, P, and S. The upcut right-hand flute geometry with right-hand cut direction makes it compatible with conventional vertical machining centers and CNC milling setups. The 0.75-inch straight shank with h6 tolerance seats securely in standard collet and end mill holders. This is a single-end tool in the GWS Series 2100 lineup, targeted at production and job-shop environments running moderate to high cutting parameters.

Key Features

• AlCrO-MAX finish for thermal resistance and extended tool life in ferrous and exotic alloys
• 38-degree helix angle promotes efficient chip evacuation and reduced cutting forces
• Centercutting geometry allows direct plunge milling without a pre-drilled pilot hole
• Four flutes with upcut right-hand flute direction for use on standard CNC vertical mills
• h6 shank tolerance for precise, repeatable fit in collet chucks and shrink-fit holders
• Series 2100 standard-length design balances reach and rigidity for general-purpose work

Compatibility

Designed for use on workpiece materials in ISO groups H, K, M, N, P, and S, including hardened steels, cast irons, stainless steels, non-ferrous metals, general steels, and heat-resistant superalloys. Compatible with standard 0.75-inch collet chucks, end mill holders, and shrink-fit tooling systems used on CNC vertical machining centers and knee mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank to full engagement depth in the holder and torque the retention mechanism per the toolholder manufacturer specification. Verify runout with a dial indicator before beginning the first cut, and confirm cutting parameters match the material group and coating recommendations for AlCrO-MAX coated carbide.