Robbjack SR-2-052 Square End Mill 0.052 in 2 Flute Carbide

Product Description

The ROBBJACK SR-2-052 is a solid carbide square end mill designed for precision milling of ferrous and non-ferrous materials in tight-tolerance applications. With a cutting diameter of 0.052 inches and a 5/32-inch length of cut, this tool is built for small-feature work such as slotting, profiling, and pocket milling in dies, molds, and precision machined components. The 1/8-inch straight-cylindrical shank fits standard collet chucks. At 1-1/2 inches overall length, the tool maintains rigidity in short-reach setups. Solid carbide construction under the SR-2 Tuffy material grade delivers hardness and wear resistance suited to challenging workpiece materials.

This end mill is used in CNC machining centers and manual knee mills where small-diameter, close-tolerance cuts are required. Typical applications include fine detail work on mold cavities, instrument components, and medical or aerospace parts where burr-free edges and dimensional accuracy are critical. The centercutting geometry allows plunge entry as well as conventional side milling. Right-hand cut and right-hand spiral flute configuration is standard for most CNC spindle setups.

Key Features

• 0.052-inch cutting diameter with tight mill diameter tolerance of plus or minus 0.0005 inches
• Solid carbide construction, Tuffy material grade for hardness and wear resistance
• Centercutting design allows direct plunge entry without pre-drilling
• 2-flute spiral configuration promotes chip evacuation in small-slot and pocket work
• 30-degree helix angle balances cutting forces and surface finish
• Uncoated finish suitable for applications where coating is not required or where re-sharpening is planned

Compatibility

Designed as an OEM-style replacement and standard tooling option for 1/8-inch straight-shank collet systems used in CNC machining centers and precision milling machines requiring small-diameter square end mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the 1/8-inch shank fully into the collet or toolholder and torque the retention nut per the toolholder manufacturer specifications. Verify runout with a dial indicator before beginning a production cut, especially at this diameter where deflection and runout have an outsized effect on tool life and dimensional accuracy.