Guhring 9069860063540 Corner Radius End Mill 1/4 in

Product Description

The GUHRING 9069860063540 is a solid carbide corner radius end mill engineered for demanding material removal in steel, stainless steel, cast iron, superalloys, and titanium. With a 1/4-inch mill diameter, a 0.03-inch corner radius, and 5 helical flutes in a right-hand cutting direction, this tool balances chip evacuation efficiency with edge integrity. The nano-A coating provides enhanced wear resistance and lubricity across a broad range of workpiece materials. At 2.5 inches overall length with a 1/4-inch straight-cylindrical shank, it fits standard end mill holders and is suitable for both roughing and finishing operations. Weighing 0.04 pounds, the tool is compact and precision-ground to close tolerances.

This end mill is designed for use in CNC machining centers and manual mills where a controlled corner radius is required to reduce stress concentrations in pocket floors and shoulders. Its primary workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium. Secondary material applications include non-ferrous metals and hard materials. The Series 6986 designation places it within a defined GUHRING product family targeted at versatile, high-performance milling applications across general manufacturing and toolroom environments.

Key Features

• Solid carbide construction for rigidity and heat resistance in ferrous and exotic alloy cutting
• nano-A coating improves surface hardness and reduces built-up edge on difficult materials
• 5-flute helical design supports higher feed rates and improved surface finish
• 0.03-inch corner radius reduces edge chipping and extends tool life at pocket corners
• Right-hand flute direction and right-hand cutting suitable for standard CNC spindle rotation
• Single-end configuration with straight-cylindrical shank for direct end mill holder mounting

Compatibility

Designed for use with standard end mill holders. Compatible with CNC machining centers and manual mills accepting a 1/4-inch straight-cylindrical shank. Suitable for primary workpiece materials including steel, stainless steel, cast iron, superalloys, and titanium, as well as secondary materials including non-ferrous metals and hard materials.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before installing or removing the tool. Seat the shank fully into the end mill holder and torque the retention mechanism to the holder manufacturer's specification. Verify runout with a dial indicator before initiating a cut to confirm proper seating and avoid premature tool wear.