Seco 17007757 Roughing End Mill 3/16 in 4 Flute Cobalt

Product Description

The SECO 17007757 is a single-end roughing end mill designed for aggressive material removal in metalworking and machining applications. Built from M42 cobalt high-speed steel and coated with TiAlN for extended tool life and heat resistance, this end mill measures 3/16 inch in diameter with a 3/8 inch shank diameter. It features 4 spiral flutes in a right-hand cutting and flute direction, a 30-degree maximum helix angle, and a 1/2 inch length of cut. The 2-3/8 inch overall length suits a range of milling setups. Center-cutting capability allows for direct plunge entry. Licensed machinists and CNC operators working in job shops, tool rooms, and production environments are the primary users.

This roughing end mill is suited for milling ferrous metals and high-temperature alloys where standard HSS tooling falls short. The TiAlN coating provides thermal stability, making it effective in dry or minimal-lubrication cutting conditions. The chipbreaker-free, spiral flute geometry moves chips efficiently during roughing passes. It fits standard ER and side-lock toolholders that accept a 3/8 inch shank. Typical applications include slotting, profiling, and step milling on CNC machining centers and manual knee mills.

Key Features

• M42 cobalt steel construction for hardness and wear resistance beyond standard M2 HSS
• TiAlN coating for high-temperature performance and extended tool life
• 4 spiral flutes with right-hand cut for efficient chip evacuation during roughing
• Center-cutting design allows direct plunge milling without pre-drilling
• 30-degree maximum helix angle balances chip flow and cutting stability
• 3/8 inch shank diameter fits standard toolholders widely used in CNC and manual setups

Compatibility

Designed as an OEM-style replacement-grade roughing end mill for use in standard 3/8 inch shank toolholders on CNC machining centers and manual milling machines.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Ensure the machine spindle is fully powered down and locked before changing tooling. Confirm the toolholder collet or set-screw bore matches the 3/8 inch shank diameter and that runout is within acceptable tolerance before beginning a cutting pass. Follow shop safety practices and applicable machine guarding requirements when operating milling equipment.