Osg 4702100 Cobalt Square Roughing End Mill 7/8 Inch

Product Description

The OSG 4702100 is a 4-flute cobalt square-end roughing and finishing end mill designed for aggressive material removal in milling applications. The chipbreaker geometry along the flutes breaks chips into smaller pieces, reducing cutting forces and heat buildup during roughing passes. Built from cobalt high-speed steel with an uncoated finish, this single-end tool measures 7/8 inch in cutting diameter with a 1-7/8 inch length of cut and a 4-1/8 inch overall length. A 30-degree helix angle promotes smooth chip evacuation. Licensed machinists and CNC operators use this tool for roughing and semi-finishing on a wide range of workpiece materials.

This end mill suits vertical and horizontal milling centers, manual knee mills, and CNC machining centers in job shop and production environments. The 7/8 inch shank diameter fits standard ER and side-lock tool holders of matching bore. The Series 470 chipbreaker profile is suited to ferrous and non-ferrous metals where high material removal rates are required before a finishing pass. Cobalt construction provides increased heat resistance compared to standard M2 HSS, making it appropriate for tougher alloys and interrupted cuts.

Key Features

• Chipbreaker flute geometry reduces cutting forces and improves chip control during roughing
• 30-degree helix angle promotes efficient chip evacuation and smooth cutting action
• Cobalt HSS construction offers enhanced heat and wear resistance over standard high-speed steel
• Square end profile allows shoulder milling, slotting, and ramping operations
• Uncoated finish suitable for use with cutting fluids on a broad range of materials
• Single-end design in OSG Series 470

Compatibility

Designed as an OEM-style replacement or direct-use roughing end mill for standard 7/8 inch bore milling tool holders used in vertical and horizontal milling applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully powered down and the tool holder is clean and free of debris before seating the shank. Secure to the specified tool holder torque per the holder manufacturer's guidelines. Verify runout with a dial indicator before initiating a cut, and confirm cutting parameters are set appropriately for the workpiece material and machine capability.