Robbjack TS-401-02 Square End Mill 1/16 in 4 Flute Carbide

Product Description

The ROBBJACK TS-401-02 is a solid carbide square end mill designed for precision milling in demanding machining environments. Part of the TS-401 Series, this stub-length tool features a 1/16 inch (0.0625 inch) cutting diameter and a 4-flute spiral configuration with a 30-degree helix angle. The right-hand cut and right-hand flute geometry delivers efficient chip evacuation and a clean, accurate finish. Built to the Tuffy material grade, it is suited for machinists and tool-and-die professionals running CNC mills or manual knee mills where tight tolerances and small-diameter work are required.

This end mill is intended for close-tolerance slot milling, pocket milling, and profiling operations on ferrous and non-ferrous materials in tool rooms and production shops. The centercutting design allows plunge entry directly into the workpiece. Its stub-length geometry provides added rigidity at small diameters, reducing deflection during light aggressive passes in confined features or thin-wall sections.

Key Features

• Solid carbide Tuffy material grade for wear resistance and rigidity at small diameters
• 4-flute spiral configuration with 30-degree helix angle for smooth cutting action
• Centercutting capable - supports direct plunge entry
• Right-hand cut, right-hand flute geometry for standard CNC and manual milling setups
• Stub-length (1/8 inch LOC) design maximizes stiffness and minimizes runout at 1/16 inch diameter
• Straight cylindrical shank with tight shank diameter tolerance for secure toolholder grip
• Uncoated finish - suitable for use as-ground or for regrinding applications

Compatibility

Designed as an OEM-style replacement or direct-use tool for standard 1/8 inch collets and end mill holders used in CNC machining centers, CNC routers, and manual milling machines accepting straight-cylindrical shank tooling.

Installation Notes

Installation should be performed by a qualified machinist or toolroom professional. Ensure the spindle is fully powered down and the tool changer or spindle is locked out before changing tooling. Seat the straight cylindrical shank fully into the collet or end mill holder and torque the retention nut to the toolholder manufacturer specification. At 1/16 inch diameter, even minor runout at the spindle or collet will significantly affect tool life and cut quality - verify TIR with a dial indicator before starting any operation.