Hertel 75987784 Roughing End Mill 1 in 3 Flute Cobalt

Product Description

The HERTEL 75987784 is a single-end roughing end mill designed for high-stock-removal milling operations in ferrous and difficult-to-machine materials. Built from M42 cobalt high-speed steel, it carries a TiCN coating that improves surface hardness and heat resistance under aggressive cutting conditions. The coarse-pitch, 3-flute geometry promotes chip clearance and reduces cutting pressure compared to standard finish end mills. At 1 inch in diameter with a 6-inch length of cut and an 8.5-inch overall length, this tool is suited for deep-cavity roughing passes where reach is a factor. It is center-cutting, allowing plunge entry without a pre-drilled pilot hole.

This end mill is used in manual and CNC milling applications where rapid material removal is the priority before a finish pass. The right-hand cut and right-hand flute direction make it compatible with standard spindle configurations. The extended length of cut — 6 inches — makes it a practical choice for mold work, deep-pocket machining, and long-reach slotting operations. Machinists and tool-and-die professionals working in job shops or maintenance environments will find this tool appropriate for roughing steel, stainless, and other high-strength alloys.

Key Features

• M42 cobalt HSS construction handles elevated cutting temperatures in hard and abrasive materials
• TiCN coating increases surface hardness and extends tool life versus uncoated cobalt
• Coarse-pitch 3-flute design maximizes chip evacuation during heavy roughing cuts
• Center-cutting end geometry allows direct plunge entry
• 6-inch length of cut enables deep-pocket and long-reach milling without tool extensions
• Right-hand cut and right-hand flute direction match standard milling machine spindle rotation

Compatibility

Designed as an OEM-style roughing end mill for use in standard 1-inch end mill holders, collet chucks, and Weldon-shank tool holders on manual or CNC knee mills and machining centers.

Installation Notes

Installation should be performed by a qualified machinist following standard toolroom procedures. Ensure the machine spindle is fully stopped and locked before mounting or removing the tool. Seat the shank fully in the holder and verify runout with a dial indicator before beginning a cut. Follow applicable shop safety standards and machine manufacturer guidelines for tool projection and speed-and-feed selection based on workpiece material.