Seco 63005245 Cobalt Tool Bit Blank 5/8x1x7 Inch WKE45

Product Description

The SECO 63005245 is a rectangular cobalt tool bit blank designed as a raw cutting tool substrate for machinists and tool grinders. Manufactured from WKE45-grade cobalt high-speed steel, it measures 5/8 inches wide by 1 inch high with a 7-inch overall length. Tool bit blanks like this one are ground to a custom cutting geometry by the end user, making material grade and dimensional accuracy critical. WKE45 cobalt HSS offers elevated hot hardness and wear resistance compared to standard M2 high-speed steel, making it well suited for interrupted cuts, harder ferrous materials, and applications where tool life under heat is a priority.

This blank is used in machine shops, toolrooms, and maintenance departments where custom single-point turning tools, boring bars, or special-profile cutters are needed. Machinists grind the blank to a specific rake, relief, and nose geometry on a bench or surface grinder before mounting it in a toolholder or lathe tool post. The rectangular cross-section is a standard profile for engine lathes, turret lathes, and manual milling setups. It is installed by machinists, toolmakers, and skilled maintenance technicians.

Key Features

• WKE45 cobalt high-speed steel provides higher hot hardness and wear resistance than standard HSS grades
• Rectangular cross-section suits standard tool bit holders and lathe tool posts
• 7-inch overall length allows multiple regrinds over the service life of the blank
• 5/8 inch width by 1 inch height dimensions match common toolholder slot specifications
• Supplied as an unground blank for custom geometry grinding by the end user

Compatibility

Designed as a general-purpose rectangular tool bit blank compatible with standard lathe tool posts and toolholders sized to accept a 5/8 inch by 1 inch bit cross-section.

Installation Notes

Grinding of this blank to final cutting geometry should be performed by a qualified machinist or toolmaker using appropriate wheel grades for cobalt HSS. Eye protection and proper wheel guards are required during grinding operations. Ensure the toolholder or tool post is securely clamped and the workpiece is properly fixtured before engaging the cutter. Follow shop safety procedures and relevant OSHA machine guarding standards when mounting and operating any ground tool bit.