Royce Ayr 2-Flute Downcut Spiral Router Bit 1/4 in (6.35 mm)
2-Flute Downcut Spiral
Router Bit
HW solid-carbide right-hand downcut spiral router bit designed for clean routing in solid wood, wood composites, laminated materials, and selected plastics. Its 1/4-inch cutting diameter, 1-1/8-inch cutting edge, 1/4-inch shank, and 3-inch overall length support dados, grooves, cabinet parts, panel machining, and general-purpose CNC routing where top-edge finish matters.
Main Product Description
The Royce Ayr 2-Flute Downcut Spiral Router Bit R57-22216 is a general-purpose tool designed for clean routing in solid wood, wood composites, laminated panels, and selected plastics. Its downcut geometry directs cutting pressure toward the workpiece, helping support the top surface and reduce upper-edge chipping during dados, grooves, profiles, and routed panel features.
The 0.2500-inch cutting diameter and 1.125-inch cutting edge provide useful reach for standard routing and dado operations. The matching 0.250-inch shank and 3.000-inch overall length fit compatible CNC router and routing-system collets while maintaining a practical compact-tool format for controlled production use.
This uncoated HW solid-carbide tool uses two downcut spiral flutes and right-hand rotation. Correct collet condition, minimum practical projection, verified runout, suitable RPM, feed rate, depth-per-pass, workholding, and dust or chip evacuation are essential for maintaining top-edge quality, dimensional control, and reliable tool life.
Best Fit Applications
Product Highlights
Downcut Finish Control
The downcut spiral directs cutting pressure toward the workpiece to help support the top face and reduce upper-edge chipping.
Extended 1-1/8-Inch Edge
The verified cutting-edge length provides practical reach for standard dados, grooves, profiles, and panel-routing operations.
Right-Hand Solid-Carbide Tool
HW construction, two flutes, RH rotation, and no coating provide a verified configuration for compatible production setups.
Compatibility & Installation Notes
Confirm that the spindle, collet, and toolholder accept an exact 1/4-inch (6.35 mm) shank, support right-hand rotation, and provide adequate clearance for the 3-inch overall length and required projection. Inspect and clean the collet, minimize unsupported projection, verify runout, and match spindle speed, feed rate, depth-per-pass, workholding, and dust or chip evacuation to the selected solid wood, composite, laminated, or plastic material.
Improve Clean Top-Edge Routing
The Royce Ayr 2-Flute Downcut Spiral Router Bit R57-22216 provides an uncoated HW solid-carbide solution for clean routing in solid wood, wood composites, laminated materials, and selected plastics.
Its 1/4-inch cutting diameter, 1-1/8-inch cutting edge, matching shank, two-flute downcut geometry, right-hand rotation, and 3-inch overall length support controlled production machining when correctly held and operated.