Hertel 62852579 Roughing End Mill 5/16 in 3 Flute Cobalt

Product Description

The HERTEL 62852579 is a single-end roughing end mill designed for aggressive material removal in ferrous and non-ferrous metal machining. Built from M42 cobalt high-speed steel with a TiAlN coating, it delivers heat resistance and edge retention under demanding cutting conditions. The 5/16 inch diameter tool features 3 flutes in a right-hand spiral configuration with a coarse pitch, which breaks chips into smaller segments and reduces cutting forces compared to standard end mills. It carries a 3/4 inch length of cut and a 2.5 inch overall length. Machinists and tool-and-die professionals use this style of end mill for roughing passes where material removal rate takes priority over surface finish.

This end mill is suited for roughing operations in manual mills and CNC machining centers. The coarse-pitch flute geometry handles steels, stainless, and alloy materials where chip clearance and heat buildup are primary concerns. The 3/8 inch shank diameter seats in standard collets and end mill holders. It is a single-end, non-center-cutting tool, which means it is intended for side milling and peripheral roughing passes rather than plunge cuts.

Key Features

• M42 cobalt construction for elevated heat resistance and toughness
• TiAlN coating extends tool life in high-temperature cutting environments
• Coarse-pitch, 3-flute design promotes chip evacuation and reduces cutting pressure
• Right-hand cut and right-hand spiral flute orientation
• Non-center-cutting single end — optimized for peripheral roughing passes
• 3/8 inch shank fits standard collets and end mill holders

Compatibility

Designed as an OEM-style roughing end mill for use in standard end mill holders and collet chucks accepting a 3/8 inch shank diameter.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle at a complete stop and the machine locked out per applicable safety procedures. Seat the 3/8 inch shank fully in the collet or end mill holder and torque the retention mechanism per the toolholder manufacturer specifications. Because this is a non-center-cutting tool, do not use it for direct plunge entry into solid material. Verify runout with a dial indicator before beginning a roughing pass.