Royce Ayr 2-Flute Downcut Spiral Router Bit 5/16 in (7.94 mm)
2-Flute Downcut Spiral
Router Bit
Solid-carbide downcut spiral router bit designed for clean top-edge CNC routing in solid wood, wood composites, laminated materials, and selected plastics. Its 5/16-inch cutting diameter, 1-1/4-inch cutting edge, matching 5/16-inch shank, and 3-inch overall length support dados, slots, profiles, cabinet parts, millwork components, and general routing where visible-surface quality matters.
Main Product Description
The Royce Ayr 2-Flute Downcut Spiral Router Bit R57-32219 is designed for clean top-edge cutting in woodworking, cabinetmaking, millwork, and panel-processing applications. Its downcut geometry directs cutting pressure toward the workpiece surface, helping reduce upper-edge chipping when routing dados, slots, profiles, and laminated materials.
The 5/16-inch cutting diameter and 1-1/4-inch cutting edge provide a practical format for smaller-diameter CNC routing with enough reach for controlled dado, slotting, pocketing, and profile work. The matching 5/16-inch shank and 3-inch overall length suit compatible collet and toolholding systems.
This solid-carbide tool uses two downcut spiral flutes and is listed for solid wood, wood composites, laminated material, and selected plastics. Rotation and coating are not specified by the supplied source and must be confirmed before ordering or programming. Correct collet condition, minimum practical projection, verified runout, suitable RPM, feed rate, depth-per-pass, workholding, and dust or chip evacuation are essential for reliable performance.
Best Fit Applications
Product Highlights
Downcut Surface Control
The downcut spiral directs cutting pressure toward the workpiece to help improve upper-edge quality in laminated and wood-based materials.
5/16-Inch Production Format
The matching cutting diameter and shank support compact, stable routing in compatible CNC collet and toolholding systems.
1-1/4-Inch Cutting Reach
The verified cutting-edge length supports controlled dados, slots, pockets, profiles, and panel-routing operations.
Compatibility & Installation Notes
Confirm that the spindle, collet, and toolholder accept an exact 5/16-inch (7.94 mm) shank and provide adequate clearance for the 3-inch overall length and required projection. Rotation and coating are not specified by the supplied source, so verify those details before ordering, programming, or installation. Inspect and clean the collet, minimize unsupported projection, verify runout, and match spindle speed, feed rate, cut depth, workholding, and dust or chip evacuation to the selected material.
Improve Small-Diameter Top-Edge Routing
The Royce Ayr 2-Flute Downcut Spiral Router Bit R57-32219 provides a solid-carbide solution for clean routing in solid wood, wood composites, laminated materials, and selected plastics.
Its 5/16-inch cutting diameter, 1-1/4-inch cutting edge, matching shank, two-flute downcut geometry, and 3-inch overall length support controlled production machining when correctly held and operated.