Hertel 62851050 Roughing End Mill 1/4 in 3 Flute Cobalt

Product Description

The HERTEL 62851050 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel and finished with a TiCN coating, it handles tough ferrous and non-ferrous materials with extended tool life. The 1/4 inch cutting diameter pairs with a 3-flute, coarse-pitch spiral geometry that clears chips efficiently and reduces chatter during heavy cuts. Center-cutting capability allows plunge entry without a pre-drilled start hole. Machinists and tool-and-die professionals use this end mill in manual mills and CNC machining centers where roughing passes demand high heat resistance and edge retention.

This roughing end mill suits production and job-shop environments where rapid stock removal from steel, stainless, and similar alloys is the priority. The coarse-pitch flute geometry breaks up chips into smaller segments, reducing load on the spindle and workpiece. The right-hand cut and right-hand spiral flute direction are standard for conventional setups. With a 3/8 inch shank diameter stepped down to a 1/4 inch cutting diameter, it fits standard ER and straight-shank collet systems without adapters in most benchtop and vertical milling setups.

Key Features

• M42 cobalt HSS construction for elevated heat and wear resistance
• TiCN coating extends tool life in ferrous and abrasive materials
• Coarse-pitch, 3-flute spiral geometry promotes aggressive chip evacuation
• Center-cutting design allows direct plunge milling
• Right-hand cut and right-hand flute direction for standard spindle configurations
• 3/8 inch shank diameter for secure collet retention

Compatibility

Designed as a standard single-end roughing end mill with a 3/8 inch straight shank, compatible with ER collets, straight-shank tool holders, and other standard milling machine spindle systems that accept a 3/8 inch shank.

Installation Notes

Installation is performed by machinists or tooling technicians using an appropriate collet or end mill holder torqued according to machine-builder specifications. Ensure the spindle is fully powered down and locked before changing tooling. Confirm collet condition and runout before clamping to protect both the tool and workpiece. Follow shop safety protocols and machine-specific tooling guidelines when selecting speeds and feeds for roughing operations.