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The VALUE COLLECTION C21001010 is a Woodruff keyseat cutter designed for milling semicircular keyseats in shafts and mating components. Built from M42 cobalt high-speed steel, it offers increased heat and wear resistance compared to standard HSS tooling, making it suitable for harder workpiece materials and higher-speed applications. The cutter measures 1.25 inches in diameter with a cutting width of 0.3125 inches and mounts on a 0.5 inch diameter shank. With 14 straight teeth and a bright, uncoated finish, this tool is a direct fit for machinists, toolmakers, and maintenance technicians cutting ANSI 1010 standard keyseats on manual or CNC milling equipment.
This keyseat cutter is used in shaft-and-hub assemblies across a wide range of mechanical and industrial applications, including pump shafts, motor shafts, gearboxes, and power transmission components. It conforms to ANSI standard 1010 and Old Standard D, which specifies the keyseat geometry for common Woodruff key sizes. The straight-tooth configuration provides clean, controlled cuts in both ferrous and non-ferrous materials. It is appropriate for job shop machining, production maintenance, and field repair work where a standard Woodruff keyseat profile is required.
Designed as an OEM-style replacement and standard production Woodruff keyseat cutter conforming to ANSI 1010 and Old Standard D specifications, compatible with any milling setup accepting a 0.5 inch shank diameter arbor.
Installation is performed by machinists using a horizontal or vertical milling machine with an appropriate arbor or collet rated for the 0.5 inch shank. Ensure the spindle is fully stopped and the machine is locked out before mounting or removing the cutter. Verify arbor runout before cutting to prevent premature tool wear or keyseat dimensional error. Follow applicable shop safety standards and use appropriate cutting fluid for the workpiece material.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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