Robbjack SS-2-031 Square End Mill 1/32 in 2 Flute Carbide

Product Description

The ROBBJACK SS-2-031 is a solid carbide square end mill designed for precision milling in tight spaces and fine-detail work. With a 0.031-inch mill diameter, a 0.0465-inch length of cut, and a 1/8-inch straight-cylindrical shank, this stub-length tool is built for high-accuracy passes where rigidity and runout control matter. The 30-degree helix spiral flute geometry promotes efficient chip evacuation. It is a centercutting design, allowing plunge entry. Licensed machinists and CNC operators working in tool-and-die, mold making, and precision part production are the primary users of this tool.

This end mill suits applications requiring very small-diameter cutting in ferrous and non-ferrous materials. Its stub-length profile minimizes deflection during aggressive passes in confined cavities or fine-feature pocketing. The uncoated solid carbide construction in ROBBJACK's Tuffy material grade makes it appropriate for shops that apply their own coatings or require a bare carbide edge for specific material compatibility. Right-hand cut and right-hand flute orientation are standard for conventional CNC spindle setups.

Key Features

• 0.031-inch (1/32 inch) mill diameter with plus or minus 0.0005-inch diameter tolerance
• Solid carbide construction, Tuffy material grade - uncoated
• 2-flute, spiral flute, stub-length design for maximum rigidity at small diameters
• Centercutting - capable of direct plunge entry
• 30-degree helix angle for efficient chip evacuation
• Right-hand cut, right-hand flute; straight-cylindrical 1/8-inch shank

Compatibility

Designed as an OEM-style precision cutting tool in the ROBBJACK SS-2 series, compatible with CNC machining centers and manual mills equipped with a collet or chuck accepting a 1/8-inch straight shank.

Installation Notes

Installation and operation should be performed by qualified machinists or CNC setup technicians. Ensure the spindle and collet are clean and within tolerance before seating the shank; shank diameter tolerance on this tool is -0.0001 to -0.0002 inches. Secure the tool to the manufacturer-recommended collet torque spec for the holder in use - do not reference values not provided with the holder. At this diameter, feed rates and spindle speeds must be carefully calculated to avoid tool breakage; consult a speeds-and-feeds reference appropriate for the workpiece material before cutting.