Accupro 95139143 Corner Radius End Mill 3/4in 4 Flute Carbide

Product Description

The ACCUPRO 95139143 is a solid carbide corner radius end mill designed for high-performance milling in demanding metalworking applications. It features a 3/4 inch mill diameter, a 1 inch length of cut, and a 0.0300 inch corner radius that reduces stress concentrations at the cutting edge. The 4-flute, right-hand spiral configuration and 38-degree helix angle promote efficient chip evacuation and smooth finishes. An AlCrTiN coating extends tool life in high-heat, high-speed cutting environments. This is a centercutting tool, meaning it can plunge directly into the workpiece. Machinists and toolroom professionals install this type of end mill on CNC machining centers and manual knee mills.

This end mill is well suited for finishing and semi-finishing passes in ferrous and exotic alloy materials where edge quality and dimensional accuracy are critical. The 3/4 inch Smart-Weldon shank provides secure, repeatable toolholding in compatible holders. The extended reach design and stub-length classification make it appropriate for pockets and shoulders where access depth must be balanced against rigidity. The 4 inch overall length suits standard toolholding setups on vertical machining centers.

Key Features

• 0.0300 inch corner radius reduces edge chipping and extends tool life in profiling operations
• AlCrTiN coating provides thermal and oxidation resistance for high-speed dry or near-dry cutting
• 4-flute right-hand spiral with 38-degree helix for efficient chip flow and surface finish quality
• Centercutting design allows direct plunge entry into the workpiece
• Ultra fine micrograin solid carbide substrate for rigidity and edge retention
• Smart-Weldon shank for enhanced gripping and reduced runout in compatible toolholders

Compatibility

Designed for use in CNC machining centers and milling machines equipped with toolholders accepting a 3/4 inch Smart-Weldon or standard round shank. Verify toolholder compatibility before installation.

Installation Notes

Installation of end mills should be performed by a qualified machinist or toolroom technician. Power down and lock out the spindle before inserting or removing tooling. Ensure the shank is fully seated and the toolholder collet or set screw is torqued according to the toolholder manufacturer specifications. Confirm runout is within acceptable limits using a dial indicator before beginning a cut; the maximum TIR for this tool is 0.0004 inches.