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The VALUE COLLECTION C21001208 is a Woodruff keyseat cutter designed for milling semicircular keyseats into shafts and mating components. Built from M42 cobalt high-speed steel with a bright, uncoated finish, this cutter delivers the hardness and wear resistance required for ferrous and harder non-ferrous workpiece materials. It features a 1 inch cut diameter, a 0.375 inch cutting width, and a 1/2 inch shank diameter, with a straight tooth configuration across 12 evenly spaced teeth. Machinists and tool-and-die professionals reach for this style of cutter when producing Woodruff key slots on manual or CNC milling machines. It conforms to ANSI standard number 1208 and old standard number 152.
This keyseat cutter is suited for general-purpose shaft keyway work in job shops, maintenance machining, and production environments. The 1 inch cut diameter and 3/8 inch cutting width correspond to a standard ANSI 1208 Woodruff key slot profile, making it appropriate for applications where standardized key dimensions are specified on engineering drawings. The 2.375 inch overall length and 1/2 inch straight shank allow it to be held in standard end mill holders, collet chucks, or milling machine arbors. Ideal for one-off replacement shafts, production runs of keyed components, or toolroom work requiring an ANSI-conforming slot.
Designed as an ANSI 1208 Woodruff keyseat cutter conforming to old standard 152, compatible with standard 1/2 inch shank tool holders used on vertical milling machines and machining centers.
Installation and use of this cutter should be performed by a qualified machinist familiar with milling operations. Ensure the machine spindle and all workholding equipment are brought to a complete stop before mounting or removing the cutter. Secure the shank firmly in a properly sized collet or end mill holder to minimize runout and prevent cutter pullout under cutting forces. Always apply an appropriate cutting fluid for the workpiece material and follow shop-standard feeds and speeds for keyseat cutters of this diameter and tooth count.
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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