Royce Ayr 2-Flute Downcut Spiral Router Bit 5/16 in (7.94 mm)
2-Flute Downcut Spiral
Router Bit
HW solid-carbide right-hand downcut spiral router bit designed for clean top-edge routing in solid wood, wood composites, laminated materials, and selected plastics. Its 5/16-inch cutting diameter, 1-1/8-inch cutting edge, 1/2-inch shank, and 3-inch overall length provide a compact cutting profile with a larger shank interface for compatible CNC routing systems.
Main Product Description
The Royce Ayr 2-Flute Downcut Spiral Router Bit R57-32220 is a general-purpose tool designed for clean top-edge cutting in wood-based production work. Its downcut geometry directs cutting pressure toward the workpiece, helping support the upper surface and reduce top-side chipping during routing, dado cutting, slotting, and laminated-panel machining.
The 0.3125-inch cutting diameter and 1.125-inch cutting edge provide a compact cutting format for controlled routing operations. The larger 0.500-inch shank and 3.000-inch overall length suit compatible CNC router collets and toolholders where the programmed depth, projection, and machine clearance match the verified geometry.
This uncoated HW solid-carbide tool uses two downcut spiral flutes and right-hand rotation. It is intended for solid wood, wood composites, laminated material, and selected plastics. 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 surface quality and reliable tool life.
Best Fit Applications
Product Highlights
Clean Top-Edge Control
The downcut spiral directs cutting pressure toward the workpiece to help reduce upper-edge chipping in laminated and wood-based materials.
Small Cutter, Larger Shank
The 5/16-inch cutting diameter pairs with a 1/2-inch shank for compatible CNC setups requiring a compact cutting profile and larger toolholding interface.
Verified RH Carbide Format
HW construction, two flutes, right-hand rotation, no coating, and a 3-inch overall length define the supplied production configuration.
Compatibility & Installation Notes
Confirm that the spindle, collet, and toolholder accept an exact 1/2-inch (12.7 mm) shank, support right-hand rotation, and provide adequate clearance for the 3-inch overall length and required projection. Verify the programmed cutting depth against the 1-1/8-inch cutting edge. Inspect and clean the collet, minimize unsupported projection, verify runout, and match spindle speed, feed rate, cut depth, workholding, guarding, and dust or chip evacuation to the selected material.
Improve Compact Downcut Routing
The Royce Ayr 2-Flute Downcut Spiral Router Bit R57-32220 provides an uncoated HW solid-carbide solution for clean top-edge routing in solid wood, wood composites, laminated materials, and selected plastics.
Its 5/16-inch cutting diameter, 1-1/8-inch cutting edge, 1/2-inch shank, two-flute downcut geometry, right-hand rotation, and 3-inch overall length support controlled production machining when correctly held and operated.