Osg 5223100 Square End Mill 3/4 in 2 Flute Cobalt

Product Description

The OSG 5223100 is a cobalt square end mill designed for milling operations requiring durability and heat resistance. Built from M42 cobalt high-speed steel, it delivers reliable performance in ferrous metals, stainless steels, and tough alloys where standard HSS tooling falls short. The double-end configuration provides two usable cutting ends, extending tool life per unit. With a 3/4 inch cutting diameter, 1-5/16 inch length of cut, and 5 inch overall length, this tool fits standard milling machine and machining center spindles sized for 3/4 inch straight shanks. Centercutting geometry allows plunge entry in addition to peripheral and slot milling.

The OSG 5223100 is suited for job shops, tool rooms, and production environments running manual knee mills, CNC vertical machining centers, or horizontal mills. The 30-degree helix angle provides a good balance of chip evacuation and cutting edge strength across a range of materials. Right-hand cut and right-hand spiral flutes are the standard configuration for conventional and climb milling on most setups. The Series 522 designation places this tool in OSGs regular-length, uncoated cobalt end mill line.

Key Features

• M42 cobalt construction for elevated heat resistance over standard HSS
• Double-end design offers two cutting ends per tool
• Centercutting geometry supports plunge milling and slot entry
• 30-degree helix angle balances chip flow and edge stability
• Right-hand cut, right-hand spiral flute configuration
• Uncoated finish compatible with regrinding services

Compatibility

Designed as an OEM-style replacement or standard tooling selection for milling machines and machining centers accepting a 3/4 inch straight shank end mill.

Installation Notes

Installation is performed by a machinist or toolroom technician. Secure the shank in a collet chuck, end mill holder, or set-screw adapter rated for 3/4 inch diameter tooling and tightened to the holder manufacturers specification. Confirm spindle direction is set to right-hand rotation before engaging the cut. Inspect both cutting ends for edge damage before use; never use a chipped or cracked end mill.