Hertel 91192260 Roughing End Mill 1 in 3 Flute Cobalt

Product Description

The HERTEL 91192260 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel with a bright, uncoated finish, it handles tough ferrous and stainless materials where standard HSS tools lose edge life. The 1-inch cutting diameter pairs with a coarse-pitch, 3-flute geometry that evacuates chips efficiently and reduces chatter during heavy roughing passes. With a 1.5-inch length of cut and 3.75-inch overall length, it fits standard milling machine and CNC machining center setups. Center-cutting capability allows direct plunging without a pre-drilled pilot hole, adding versatility on the shop floor.

This end mill is suited for production and job-shop environments where roughing cuts need to come in fast before a finishing pass. The 0.75-inch shank diameter seats in standard R8, CAT, BT, or directly clamped tool holders commonly found on vertical mills and machining centers. Right-hand cut and right-hand flute direction are the standard configuration for conventional and climb milling on most setups. Machinists and tool-and-die professionals are the primary users for this type of cutter.

Key Features

• M42 cobalt steel construction for extended tool life in tough and stainless alloys
• Coarse-pitch, 3-flute design promotes chip clearance and reduces heat buildup in deep cuts
• Center-cutting geometry allows direct plunge entry without pre-drilling
• Bright, uncoated finish compatible with a wide range of cutting fluids and lubricants
• Right-hand cut and right-hand helix for standard milling machine setups
• 0.75-inch shank fits common tool holder bores without reduction collets

Compatibility

Designed as a direct-fit roughing end mill for standard milling machines and CNC machining centers accepting a 0.75-inch shank diameter tool holder.

Installation Notes

Installation is performed by a machinist or tooling technician. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the tool holder and torque the retention mechanism per the tool holder manufacturer specification. Verify runout with a dial indicator before beginning a cut, and confirm cutting fluid flow is directed at the cutting zone to manage heat during roughing passes.