Harvey Tool 43998-C3 Woodruff Keyseat Cutter Solid Carbide

Product Description

The HARVEY TOOL 43998-C3 is a Woodruff keyseat cutter designed for milling keyseat slots in shafts and related components across precision machining operations. Built from solid carbide with an AlTiN coating, it delivers a 0.25-inch cut diameter and a 0.187-inch cutting width using a 6-tooth straight configuration. The 2.5-inch overall length and 1/4-inch shank diameter make it compatible with standard end mill holders and collet chucks. The AlTiN finish provides thermal resistance and extended tool life during demanding cuts. Machinists and tool-and-die professionals specify this cutter for jobs where dimensional accuracy in keyseat geometry is critical.

This keyseat cutter is suited for use in vertical milling machines and machining centers handling ferrous and non-ferrous workpieces. Primary workpiece materials include steel, stainless steel, and cast iron. Secondary applications cover non-ferrous metals, superalloys, titanium, and hard materials. The straight-tooth design is appropriate for controlled, moderate-feed slotting operations where chip evacuation and surface finish quality must be maintained. It is a single-piece solid carbide tool with no indexable inserts, meaning it is reground rather than replaced at the insert level.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision keyseat applications
• AlTiN coating provides heat resistance and extended tool life on ferrous and hard materials
• 0.25-inch cut diameter with 0.187-inch cutting width for accurate keyseat slot sizing
• 6-tooth straight configuration for controlled chip load and consistent surface finish
• 0.125-inch neck diameter and 0.75-inch neck length allow reach into recessed keyseat locations
• 1/4-inch shank with no Weldon flat for use in standard collet or end mill toolholding systems

Compatibility

Designed for use on steel, stainless steel, and cast iron as primary workpiece materials, with secondary suitability for non-ferrous metals, superalloys, titanium, and hard materials. Fits standard 1/4-inch collet chucks and end mill holders.

Installation Notes

Installation is performed by qualified machinists using appropriate toolholding equipment rated for the shank diameter. Ensure the machine spindle is fully stopped and the tool is secured with correct torque before beginning any cut. Verify runout with a dial indicator before engaging the workpiece, as excessive runout will accelerate edge wear on small-diameter carbide cutters. Follow the tool manufacturer's recommended speeds and feeds for the specific workpiece material and coating combination.