Royce Ayr 2-Flute Downcut Spiral Router Bit 3/8" (9.53mm) – 1-1/4"

The Royce Ayr 2-Flute Downcut Spiral Router Bit R57-32227 is part of the R57-222/322 downcut spiral family and is intended for shops requiring clean top-edge routing in solid wood, wood composites, melamine-style panels, laminated sheet goods, and selected plastics. Its downcut geometry directs cutting pressure toward the workpiece, helping support the upper surface during routing.

The 3/8-inch cutting diameter and 1-1/4-inch cutting length provide a practical format for profiles, trimming, pockets, grooves, and compatible through-cutting operations. The larger 1/2-inch shank and 3-inch overall length suit properly matched CNC router collets and toolholders where rigidity, projection, clearance, and programmed depth are correctly controlled.

This solid-carbide tool uses two downcut spiral flutes. Coating, rotation, and RPM or feed limits are not specified by the supplied source and should be confirmed before ordering or programming when those details are required. Correct collet condition, minimum practical projection, verified runout, suitable feeds and speeds, depth-per-pass, workholding, and dust or chip evacuation are essential for reliable performance.