Robbjack SR-2-012 Square End Mill 0.012 in 2 Flute Carbide

Product Description

The ROBBJACK SR-2-012 is a solid carbide square end mill designed for precision micro-milling applications. Built to Series SR-2 standards, this two-flute tool features a 0.012-inch cutting diameter and a 0.036-inch length of cut, making it suited for fine detail work in tight geometries. The 30-degree helix spiral flute geometry promotes chip evacuation while maintaining edge stability at small diameters. With a straight cylindrical 1/8-inch shank and 1.500-inch overall length, it mounts in standard collet chucks without adapters. This tool is intended for use by machinists and toolmakers in CNC milling operations requiring tight dimensional control.

This end mill is engineered for micro-scale milling tasks in industries such as aerospace, medical device manufacturing, mold making, and precision electronics. Its centercutting capability allows plunge entry into the workpiece, supporting slot milling and pocket work. The right-hand cut and right-hand flute configuration is standard for conventional CNC spindle setups. The Tuffy material grade solid carbide construction is well suited for harder workpiece materials where tool rigidity at small diameters is critical. Package quantity is one piece per order.

Key Features

• 0.012-inch cutting diameter with plus or minus 0.0005-inch diameter tolerance for precision fitment
• Solid carbide Tuffy grade construction for rigidity and wear resistance at micro diameters
• Two-flute spiral design with 30-degree helix angle promotes chip flow in small-scale cuts
• Centercutting geometry enables direct plunge entry for slot and pocket milling
• Right-hand cut, right-hand flute configuration compatible with standard CNC spindle rotation
• Uncoated finish allows easy inspection of cutting edge condition and suits a wide range of workpiece materials

Compatibility

Designed as an OEM-style micro end mill for use in standard 1/8-inch collet systems on CNC vertical machining centers and high-speed spindle platforms requiring Series SR-2 tooling.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Secure the shank fully within the collet to the recommended gauge-line depth before torquing the collet nut. Confirm spindle runout with a test indicator before engaging the cut, as runout at this diameter will significantly reduce tool life. Power down and lock out the spindle before changing tooling per standard machine safety practice.