Harvey Tool 943380 Back Chamfer Cutter 0.08in 90 Deg 4 Flute

Product Description

The HARVEY TOOL 943380 is a solid carbide back chamfer cutter designed to create chamfers on the back side of drilled holes, slots, and bores without repositioning the workpiece. The cutter head measures 0.08 inches in diameter with a 90-degree included angle and a chamfer width of 0.014 inches. With 4 flutes and a bright, uncoated finish, this tool delivers clean, consistent chamfer geometry in ferrous and non-ferrous materials. The 0.047-inch neck diameter allows it to reach into confined passages where standard chamfer tools cannot access, making it a practical choice for precision machining work.

This back chamfer cutter is used in CNC machining centers and manual milling applications where back-side edge preparation is required. Typical applications include deburring and chamfering the reverse side of cross-drilled holes, undercut features, and intersecting bores in close-tolerance components. It is well suited for aerospace, medical device, mold and die, and general precision machining environments where access is restricted and burr removal on hidden edges is critical to part function and assembly fit.

Key Features

• 0.08 inches cutter head diameter for work in small-diameter holes and tight-access features
• 90-degree included angle produces standard chamfer geometry on back-side edges
• 0.014 inches chamfer width for fine, controlled edge breaks
• 4 flutes for improved chip evacuation and surface finish
• 0.047 inches neck diameter enables reach into restricted passages
• Solid carbide construction provides rigidity and wear resistance
• Bright/uncoated finish suitable for a wide range of workpiece materials

Compatibility

Designed for use in standard 1/8-inch collet or chuck systems on CNC machining centers, VMCs, and manual mills requiring back chamfering capability in small-diameter bores.

Installation Notes

Installation and operation should be performed by a qualified machinist or CNC programmer. Secure the 1/8-inch shank in a precision collet or end mill holder, verifying runout before cutting. Confirm spindle speed and feed rate are appropriate for the workpiece material and cutter diameter before engaging the tool. Always power down and lock out the machine before changing tooling.