Seco 02003 Tool Bit Blank Cobalt Square WKE45

Product Description

The SECO 02003 is a square tool bit blank machined from WKE45-grade cobalt high-speed steel. It measures 0.25 inches wide by 0.25 inches high with an overall length of 4 inches. Tool bit blanks serve as unground starting stock that machinists and tool grinders shape into custom single-point lathe tools, form tools, and special-purpose cutting tools. The cobalt content in WKE45 increases hot hardness and wear resistance compared to standard M2 HSS, making this blank well-suited for grinding tools intended to cut difficult-to-machine alloys, stainless steels, and hardened materials. The square cross-section allows grinding on any face.

This blank is used in machine shops, tool rooms, and maintenance facilities wherever custom or replacement cutting tools are required. It is appropriate for use in manual lathes, turret lathes, and screw machines that accept 0.25-inch square tool holders. Machinists grind the blank to the required rake, relief, and nose geometry for the specific workpiece material and operation. The 4-inch overall length provides sufficient stock for multiple regrinds over the service life of the tool.

Key Features

• WKE45 cobalt high-speed steel for increased hot hardness and wear resistance versus standard HSS
• Square cross-section at 0.25 inches by 0.25 inches for versatile grinding on any face
• 4-inch overall length provides ample stock for initial grinding and subsequent resharpening
• Unground blank condition allows custom geometry to be applied by the end user
• Consistent dimensions support repeatable tool room production

Compatibility

Designed as a standard 0.25-inch square tool bit blank compatible with tool holders and grinder fixtures that accept 0.25-inch square shank stock.

Installation Notes

Tool bit blanks are ground to final geometry by a qualified machinist or tool grinder using a bench or pedestal grinder equipped with appropriate abrasive wheels for high-speed steel. Always wear eye protection and ensure the grinder rest is properly adjusted before grinding. Verify the finished tool geometry and clearance angles are appropriate for the workpiece material before mounting the tool in a lathe or holder. Allow the tool to cool periodically during grinding to prevent drawing the temper of the cobalt steel.