Promax 137-01640 Corner Rounding End Mill 1/4 in 2 Flute

Product Description

The PROMAX 137-01640 is a solid carbide corner rounding end mill designed to machine precise convex radii on workpiece edges. With a 0.09 mm (0.0940 inch) radius and a 1/4 inch mill diameter, this tool produces clean, consistent edge profiles in ferrous and non-ferrous materials. The micrograin carbide construction provides the hardness and wear resistance needed for tight-tolerance work. Configured as a double end tool, it delivers two usable cutting ends, extending tool life between changes. Two right-hand flutes with a right-hand cutting direction make it compatible with standard CNC machining center and manual milling machine setups.

This end mill is suited for tool and die, mold making, aerospace, and general precision machining applications where edge-break geometry must meet a defined radius specification. The double end configuration makes it practical for production environments where tool economy matters. The bright, uncoated finish is appropriate for use in aluminum, brass, and similar non-ferrous alloys, as well as softer steels at appropriate feeds and speeds. The 1/4 inch shank diameter fits standard collets and end mill holders found on most vertical milling machines and CNC machining centers.

Key Features

• 0.09 mm (0.0940 inch) corner radius with a tolerance of plus or minus 0.001 inch for precise edge profiling
• Solid micrograin carbide construction for rigidity and wear resistance in precision applications
• Double end design provides two cutting ends per tool, reducing tooling cost per edge
• Right-hand cut and right-hand flute direction for use on standard milling setups
• Bright, uncoated finish suited for non-ferrous metals and general-purpose milling
• 0.0620 inch tip diameter for access in tighter profiling areas

Compatibility

Designed for use in standard 1/4 inch collets and end mill holders on CNC machining centers and manual vertical milling machines running right-hand spindle rotation.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Secure the 1/4 inch shank in a properly sized collet or end mill holder and torque to the machine manufacturer's specification. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Do not exceed the tool manufacturer's recommended feeds and speeds for the specific workpiece material.