Hertel 44838514 Roughing End Mill 1/4 in 4 Flute Cobalt

Product Description

The HERTEL 44838514 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 TiAlN coating, it delivers strong heat resistance and extended tool life in demanding cutting environments. The 1/4 inch mill diameter and 4-flute, fine-pitch configuration make it effective for roughing passes on ferrous and non-ferrous metals where chip evacuation and surface finish take a back seat to stock removal rate. This tool is sized for use in standard milling machines, CNC machining centers, and manual knee mills.

This end mill is suited for roughing operations in job shop, production machining, and toolroom environments. The 3/4 inch length of cut accommodates typical shallow-to-moderate depth passes, while the 3/8 inch shank provides a rigid grip in standard collet and end mill holders. The right-hand cutting and right-hand flute direction are standard for conventional and climb milling setups. Non-centercutting geometry means this tool is intended for peripheral and side milling, not plunge cutting.

Key Features

• M42 cobalt construction for elevated heat and wear resistance compared to standard HSS
• TiAlN coating extends tool life in high-temperature cutting applications
• Fine-pitch, 4-flute design optimized for roughing passes and efficient chip load
• Right-hand cut, right-hand flute for compatibility with standard spindle setups
• Non-centercutting geometry — peripheral and side milling only, not for plunge entry
• 3/8 inch shank fits common collet chucks and end mill holders without adapter

Compatibility

Designed as an OEM-style replacement or direct-fit roughing end mill for standard 3/8 inch collet and end mill holder setups used in vertical milling machines and CNC machining centers.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the collet or holder and torque the retention hardware to the machine manufacturer's specification. Confirm tool runout with a dial indicator before beginning a cut, particularly given the tight shank diameter tolerance of -0.0001 to -0.0005 inches.