Robbjack SR-2-046 Square End Mill 0.046 in 2 Flute Carbide

Product Description

The ROBBJACK SR-2-046 is a solid carbide square end mill designed for precision milling in tight-tolerance applications. With a 0.046-inch cutting diameter and a 0.138-inch length of cut, this tool is built for fine detail work, slot milling, and profiling in harder materials. The 30-degree helix angle and spiral flute geometry promote efficient chip evacuation and stable cutting action. Right-hand cut and right-hand flute orientation follow standard CNC machining conventions. Centercutting capability allows plunge entry into the workpiece. This end mill is part of the SR-2 series, produced in ROBBJACK's Tuffy material grade for solid carbide tools.

This end mill is suited for use in CNC machining centers and manual mills where small-diameter, high-precision cutting is required. Typical applications include mold and die work, aerospace component machining, medical device manufacturing, and electronics fixture work where fine features and tight tolerances are critical. The 1/8-inch straight cylindrical shank fits standard collet chucks and ER collet systems commonly found in vertical machining centers.

Key Features

• 0.046-inch cutting diameter with mill diameter tolerance of plus or minus 0.0005 inches for tight dimensional control
• Solid carbide Tuffy material grade for rigidity and wear resistance in demanding cuts
• 30-degree helix angle with spiral flute design for smooth cutting action and chip removal
• Centercutting geometry enables direct plunge milling without a pre-drilled entry hole
• Right-hand cut and right-hand flute - compatible with standard CNC spindle rotation
• Uncoated finish suitable for non-ferrous metals, plastics, and certain steel alloys

Compatibility

Designed as a standard small-diameter square end mill for use in CNC machining centers and manual mills accepting a 1/8-inch straight cylindrical shank via ER collet or equivalent tool-holding system.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the spindle before inserting or removing the tool from the collet holder. Ensure the shank is fully seated and the collet is torqued to the tool-holder manufacturer's specification. Inspect the cutting edges under magnification before use, as small-diameter carbide end mills are susceptible to chipping if mishandled.