Hertel 44838548 Roughing End Mill 1/2 in 4 Flute Cobalt

Product Description

The HERTEL 44838548 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel with a TiCN coating, it handles tough ferrous and non-ferrous materials while maintaining edge integrity under heat and friction. The 1/2 inch diameter, 4-flute, fine-pitch geometry produces a characteristic corncob profile that breaks chips efficiently and reduces chatter during heavy roughing cuts. The 1.625 inch length of cut and 3.625 inch overall length suit it to standard vertical and horizontal milling applications. Machinists and toolroom technicians are the primary installers and users of this tooling.

This end mill is suited for roughing passes on milling machines and machining centers in job shop, production, and maintenance environments. The fine-pitch flute spacing is optimized for softer metals and alloys where chip evacuation and reduced vibration matter most. With a 1/2 inch straight shank and right-hand cut and flute direction, it seats in standard 1/2 inch collets, end mill holders, or Weldon-style holders. It is a single-end tool, meaning the cutting geometry is on one end only.

Key Features

• M42 cobalt HSS construction for elevated heat and wear resistance compared to standard M2
• TiCN coating extends tool life and reduces friction at the cutting edge
• Fine-pitch 4-flute roughing geometry breaks chips and reduces cutting forces
• Right-hand cut and right-hand flute direction for conventional milling machine setups
• 1/2 inch shank diameter matches 1/2 inch toolholders and collets directly
• Non-centercutting design — not suitable for direct plunge entry

Compatibility

Designed as an OEM-style replacement or standard tooling selection for 1/2 inch end mill holders, collet chucks, and Weldon shank holders used on vertical mills, knee mills, and CNC machining centers.

Installation Notes

Installation is performed by machinists or toolroom personnel. Power down and lock out the machine spindle before changing tooling. Seat the shank fully into the holder to the recommended gauge line and torque the set screw or collet nut per the toolholder manufacturer specifications. Because this end mill is not centercutting, do not program direct axial plunge moves — use ramping or helical entry instead.