Hertel 62848320 Roughing End Mill 1/4 in 3 Flute Cobalt

Product Description

The HERTEL 62848320 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel with a Titanium Nitride (TiN) coating, it delivers extended tool life and heat resistance under heavy cutting conditions. The 1/4 inch diameter cutter features 3 flutes with a fine-pitch spiral configuration and a right-hand cutting and flute direction. With a 5/8 inch length of cut and 2-7/16 inch overall length, it fits standard milling setups requiring a compact, high-performance rougher. The 3/8 inch shank diameter accommodates common end mill holders and collets. This tool is installed by machinists and tool-and-die professionals in CNC and manual milling operations.

This roughing end mill is suited for ferrous and non-ferrous material removal in both production and maintenance machining environments. The center-cutting design allows plunge entry, making it versatile for ramping, slotting, and peripheral roughing passes. The TiN coating reduces friction and improves wear resistance, extending run time between tool changes in high-cycle shop conditions. It is a single-end tool, meaning it is replaced when the cutting end is worn rather than indexed or flipped.

Key Features

• M42 cobalt HSS construction for elevated heat and wear resistance
• Titanium Nitride (TiN) coating reduces friction and extends tool life
• 3-flute fine-pitch spiral geometry optimized for aggressive roughing cuts
• Center-cutting capable — supports plunge milling and ramp entry
• Right-hand cut and right-hand flute direction for standard spindle use
• 3/8 inch shank diameter fits common collets and end mill holders

Compatibility

Designed as an OEM-style replacement or standard-fitment roughing end mill for milling machines accepting a 3/8 inch shank end mill holder or collet chuck.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Power down and lock out the spindle before changing tooling. Secure the shank fully into the holder to the recommended gauge line and torque the retention fastener per the holder specification. Inspect the TiN coating and cutting edges for chipping before each use; a damaged edge on a roughing tool can cause workpiece deflection or holder damage.