Royce Ayr Double Flute Hard Plastic and Aluminum Downcut Router Bit 3/16 in (4.76 mm)
2-Flute Downcut
Router Bit
Solid-carbide right-hand downcut router bit designed for CNC machining of hard plastics and aluminum. Its 3/16-inch cutting diameter, 0.652-inch cutting edge, 1/4-inch shank, and 2-inch overall length support detailed routing, pocketing, profiling, and small-feature machining where top-side control and improved pocket-bottom finish are important.
Main Product Description
The Royce Ayr 2-Flute Downcut Router Bit for Hard Plastics and Aluminum R57-02403 is designed for precision CNC routing where top-surface control and pocket-bottom finish are important. Its downcut geometry directs cutting pressure toward the workpiece, helping stabilize the upper surface during routing, profiling, and pocketing operations.
The 0.1875-inch cutting diameter and 0.652-inch cutting edge provide a compact format for detailed machining, tighter internal features, small-radius profiles, and controlled routing paths. The 0.250-inch shank and 2.000-inch overall length suit compatible CNC router collets and toolholding systems.
Royce Ayr identifies this series for hard plastics and aluminum, with an end-mill-style finish intended to improve the bottom finish in pocketing. Correct collet condition, minimum practical projection, verified runout, suitable spindle speed, feed rate, chip load, depth-per-pass, workholding, and chip evacuation or air assist are essential for safe, reliable production performance.
Best Fit Applications
Product Highlights
Downcut Surface Control
The downcut geometry directs cutting pressure downward to help stabilize the top surface during routing, profiling, and pocketing.
Compact 3/16-Inch Cutter
The small cutting diameter supports detailed machining, tighter internal features, and controlled toolpaths where larger tooling will not fit.
Hard Plastic & Aluminum Use
The Royce Ayr series is specified for routing hard plastics and aluminum, including pocketing work where bottom finish is important.
Compatibility & Installation Notes
Confirm that the spindle and toolholder accept an exact 1/4-inch (6.35 mm) shank and provide adequate clearance for the 2-inch overall length and required projection. Inspect and clean the collet, collet nut, and tool shank, minimize unsupported projection, verify runout, and confirm right-hand rotation before machining. Match spindle RPM, feed rate, chip load, depth-per-pass, workholding, guarding, and chip evacuation or cooling method to the specific hard plastic or aluminum grade. Do not assume compatibility with every CNC router, handheld router, or aluminum-routing process without confirming machine capability and application requirements.
Control Small-Diameter Downcut Routing
The Royce Ayr 2-Flute Downcut Router Bit for Hard Plastics and Aluminum R57-02403 provides a solid-carbide solution for detailed CNC routing, profiling, and pocketing in compatible hard-plastic and aluminum materials.
Its 3/16-inch cutting diameter, 0.652-inch cutting edge, 1/4-inch shank, two-flute right-hand downcut geometry, and 2-inch overall length support controlled machining where top-side stability and pocket-bottom finish matter.