Robbjack SS-2-051 Square End Mill 0.051 in 2 Flute Carbide

Product Description

The ROBBJACK SS-2-051 is a solid carbide square end mill designed for precision milling in tight-tolerance applications. With a 0.051-inch cutting diameter and a 0.0765-inch length of cut, this tool is built for fine detail work where dimensional accuracy is critical. The 2-flute configuration and 30-degree right-hand spiral flute geometry promote efficient chip evacuation and clean cutting action. The 1/8-inch shank fits standard collets and tool holders commonly found in CNC machining centers and manual mills. A licensed machinist or CNC operator installs and runs this tool in production and prototype environments.

This end mill is part of the ROBBJACK SS-2 series, a stub-length line intended for applications requiring maximum rigidity and minimal deflection. The short length of cut relative to diameter makes it well suited for slotting, profiling, and plunge operations in metals, plastics, and composites where tool runout must be kept to an absolute minimum. The uncoated carbide construction makes it a solid choice for non-ferrous metals and materials where coating adhesion is not a priority.

Key Features

• 0.051-inch cutting diameter with a tight mill diameter tolerance of plus 0.0005 / minus 0.0005 inches
• Solid carbide construction for rigidity and wear resistance in precision milling
• 2-flute, 30-degree right-hand spiral flute geometry for efficient chip removal
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Stub-length (SS-2 series) build minimizes deflection in close-tolerance work
• Uncoated finish suited for non-ferrous metals, plastics, and composites

Compatibility

Designed as a standard stub-length square end mill compatible with 1/8-inch collets and tool holders on CNC machining centers, CNC routers, and manual knee mills. Part of the ROBBJACK SS-2 series.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Power down and lock out the spindle before changing tooling. Seat the 1/8-inch shank fully into the collet and tighten to the tool holder manufacturer's specified clamping torque using calibrated tooling. Inspect the cutting edges for chips or damage before each use, and verify runout with a dial indicator when tolerances are critical.