Value Collection 934-000-243 Ball End Mill 0.1 in 2 Flute Cobalt

Product Description

The VALUE COLLECTION 934-000-243 is a cobalt steel ball end mill designed for milling operations requiring a spherical cutting profile. With a 0.1000-inch mill diameter and a 0.1500-inch length of cut, this stub-length tool is built for precision work in tight spaces and shallow-pocket applications. The 2-flute, right-hand spiral geometry with a variable helix angle of 35 to 40 degrees supports both roughing and finishing passes. The bright/uncoated surface finish is suitable for a wide range of workpiece materials. Licensed machinists and toolroom technicians install this type of end mill in CNC machining centers and manual knee mills.

This end mill is rated for use on steel, stainless steel, cast iron, aluminum and non-ferrous metals, high-temperature alloys, and hardened materials. The stub length format and 3/16-inch straight-cylindrical shank make it well suited for close-tolerance slotting, profiling, and contouring in production and job-shop environments where tool overhang must be minimized. It is a single-end, centercutting tool, allowing plunge entry as well as conventional side milling.

Key Features

• 0.1000-inch ball nose diameter with a 0.0500-inch nose radius for accurate contoured surface generation
• Cobalt construction provides increased heat and wear resistance compared to standard high-speed steel
• Variable helix angle (35 to 40 degrees) reduces chatter and harmonic vibration during cutting
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Bright/uncoated finish compatible with cutting fluids used across ferrous and non-ferrous applications
• Stub length format (0.1500-inch reach) minimizes deflection for improved dimensional accuracy

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills accepting a 3/16-inch straight-cylindrical shank. Rated for steel, stainless steel, cast iron, aluminum and non-ferrous metals, high-temperature alloys, and hardened materials per workpiece material codes P, M, K, N, S, and H.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Secure the shank fully within the collet or end mill holder to the recommended engagement depth before tightening; inadequate shank engagement is a leading cause of tool pullout and breakage in small-diameter end mills. Confirm spindle runout is within acceptable limits before cutting, as runout has an outsized effect on tool life at diameters under 0.125 inches. Always power down and lock out the spindle before changing tooling.