Seco 63005202 Tool Bit Blank Cobalt WKE45 Rectangle

Product Description

The SECO 63005202 is a rectangular cobalt tool bit blank designed for use in custom tooling applications where machinists need to grind their own cutting geometry. Manufactured from WKE45 cobalt high-speed steel, this blank measures 3/8 inches wide by 3/4 inches high with an overall length of 6 inches. The WKE45 grade offers elevated hot hardness and wear resistance compared to standard M2 HSS, making it well suited for demanding turning, boring, and threading operations. Machinists and toolroom professionals rely on blanks like this to fabricate form tools, single-point threading tools, and specialized profiles not available as catalog ground tools.

This tool bit blank is intended for use in manual and CNC lathes, boring mills, and toolroom grinders. The rectangular cross-section fits standard tool holders and lantern-style post holders commonly found on engine lathes and turret lathes. It is appropriate for machining ferrous metals, stainless steel, and other materials where cobalt HSS provides a cost-effective alternative to carbide tooling. The 6-inch overall length provides ample material for grinding multiple tools or regrinding a worn profile several times over the life of the blank.

Key Features

• WKE45 cobalt high-speed steel for superior hot hardness and extended tool life
• Rectangular profile fits standard lathe tool holders and post holders
• 3/8 inch width by 3/4 inch height cross-section for rigid tool support
• 6-inch overall length allows multiple grinds or fabrication of several tools from a single blank
• Unground blank lets machinists apply custom cutting geometry for specialized applications

Compatibility

Designed as a general-purpose cobalt HSS tool bit blank compatible with standard rectangular tool holders and lathe post holders that accept 3/8 inch by 3/4 inch cross-section tooling.

Installation Notes

Grinding and shaping of HSS tool bit blanks should be performed by qualified machinists or toolroom personnel using appropriate bench or surface grinders with aluminum oxide or CBN wheels suited for cobalt HSS. Use grinding fluid or take light passes to control heat buildup, which can soften the material and reduce tool life. Secure the blank firmly in a tool holder or grinder vise before use, and follow all applicable shop safety practices including eye protection and dust control when grinding.