Sgs 91250 Corner Radius End Mill 1/4 in 2 Flute Carbide

Product Description

The SGS 91250 is a solid carbide corner radius end mill designed for precision milling of non-ferrous metals. It features a 1/4 inch diameter cutting head with a 0.01 inch corner radius, a 3/8 inch length of cut, and a 2.5 inch overall length. The two-flute, high-helix helical geometry promotes efficient chip evacuation, reducing heat buildup and improving surface finish on aluminum, brass, copper, and similar materials. The bright uncoated finish is well suited for applications where coating adhesion to the workpiece is a concern. This end mill is installed by machinists and tool-and-die professionals using standard end mill holders in CNC and manual milling setups.

The SGS 91250 is intended for roughing operations in non-ferrous metal applications. Its short-length flute geometry and straight cylindrical 3/8 inch shank make it compatible with standard end mill holders across a range of milling machines. The single-end, centercutting-capable design supports both peripheral and plunge cutting. This tool is a coarse-pitch, right-hand cut, right-hand flute configuration suited for high-speed material removal in production and job-shop environments.

Key Features

• Solid carbide construction for rigidity and long tool life in non-ferrous milling
• 0.01 inch corner radius reduces stress concentrations and edge chipping at workpiece corners
• Two-flute, high-helix helical design promotes aggressive chip evacuation
• Bright uncoated finish suitable for aluminum and other non-ferrous materials
• Coarse pitch roughing geometry maximizes material removal rates
• Straight cylindrical shank fits standard end mill holders without adapters

Compatibility

Designed for use with standard end mill holders. Optimized for non-ferrous metal workpiece materials including aluminum, brass, and copper. Part of the SGS Series 45C corner radius end mill family.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Ensure the milling machine spindle is fully stopped and the machine is powered down or placed in an e-stop state before changing tooling. Secure the 3/8 inch shank in a properly sized end mill holder or collet to the torque specification required by the holder manufacturer. Verify runout after installation and confirm correct tool offset entry in the machine controller before initiating a cut.