Harvey Tool 21250 Corner Rounding End Mill 1/4 in Radius

Product Description

The HARVEY TOOL 21250 is a double-end, solid carbide corner rounding end mill designed to machine smooth, consistent radius profiles on workpiece edges. With a 1/4 inch radius and a 3/4 inch mill diameter, this tool produces clean convex edge transitions in a single pass. The 4-flute geometry supports efficient chip evacuation and surface finish quality across a range of materials. The bright, uncoated finish makes it well suited for use in non-ferrous metals, plastics, and general-purpose machining applications where coating adhesion is not a priority. Machinists and CNC operators working in job shops, tool rooms, and production environments will find this tool appropriate for both roughing and finishing corner rounding operations.

This end mill is used in milling applications where a precise, repeatable corner radius is required on part edges. The double-end design provides two usable cutting ends, extending tool life per unit. The 3/4 inch shank diameter is compatible with standard collet and end mill holder setups commonly found on vertical machining centers and CNC mills. The flared series geometry supports stable engagement during edge-profiling passes in both horizontal and vertical orientations.

Key Features

• 1/4 inch corner radius for consistent edge profiling in a single pass
• 4-flute solid carbide construction for rigidity and wear resistance
• Double-end design provides two cutting ends per tool
• 3/4 inch shank diameter fits standard collet and end mill holders
• Bright, uncoated finish suited for non-ferrous metals and plastics
• 4 inch overall length supports reach in typical milling setups

Compatibility

Designed for use in standard CNC milling machines and machining centers equipped with 3/4 inch collet or end mill holder systems. Part of the Harvey Tool Corner Rounding End Mills - 2 and 4 Flute - Flared series.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the shank fully in the holder to the recommended grip depth before tightening. Verify spindle is fully stopped and machine is in a safe state before tool changes. Follow the machine tool manufacturer guidelines for runout inspection and tool length offset setup prior to cutting.