Cleveland C44651 M42 Cobalt Tool Bit Blank 8 Inch

Product Description

The CLEVELAND C44651 is a rectangle ground tool bit blank machined from M42 cobalt high-speed steel. It measures 0.5 inches wide, 1 inch high, and 8 inches overall length, providing stock material for grinding custom single-point cutting tools, form tools, or lathe bits to exact profiles. M42 cobalt grade offers higher red hardness and wear resistance compared to standard M2 high-speed steel, making it well suited for interrupted cuts and harder workpiece materials. Machinists and tool-and-die professionals typically grind these blanks to finished geometry on a bench or surface grinder.

This tool bit blank is used in machine shops, maintenance facilities, and production environments where custom ground tooling is required. It is appropriate for turning, boring, threading, and form-relief applications on manual lathes and screw machines. The ground finish on all faces ensures dimensional accuracy and provides a consistent starting surface for precision tool grinding. Shops that run difficult-to-machine alloys, stainless steels, or heat-resistant superalloys commonly stock M42 cobalt blanks for their improved hot hardness over standard high-speed steel grades.

Key Features

• M42 cobalt high-speed steel for increased red hardness and wear resistance
• Rectangle ground profile on all faces for accurate starting geometry
• 0.5 inches wide by 1 inch high cross-section suits a range of tool holder sizes
• 8-inch overall length provides material for multiple regrind cycles or multiple tools
• Ground finish reduces stock removal time when sharpening to final geometry

Compatibility

Designed as a general-purpose ground tool bit blank for use in standard tool holders and grinding fixtures that accept 1/2 inch by 1 inch rectangular shank stock on manual and CNC lathes, screw machines, and boring applications.

Installation Notes

Tool bit blanks are ground to final geometry by a qualified machinist or tool grinder using appropriate bench, pedestal, or surface grinding equipment. Ensure the grinder wheel is rated for high-speed steel and cobalt alloys before proceeding. Wear appropriate eye and face protection during all grinding operations. Secure the blank firmly in a tool grinding fixture or vise to maintain accurate relief and rake angles during sharpening.