Royce Ayr General Purpose Downcut Spiral Router Bit 5/8 in (15.88 mm)
2-Flute Downcut Spiral
Router Bit
General-purpose solid-carbide downcut spiral router bit designed for clean top-edge CNC routing in solid wood, wood composites, laminated materials, and selected plastics. Its 5/8-inch cutting diameter, 2-1/8-inch cutting edge, 5/8-inch shank, and 4-inch overall length support heavier grooves, dados, profiles, and production routing work.
Main Product Description
The Royce Ayr 2-Flute General-Purpose Downcut Spiral Router Bit R57-32238 is designed for CNC routing applications where a clean top edge is important. Its downcut spiral geometry directs cutting pressure toward the workpiece, helping reduce top-edge lifting during dados, grooves, profiles, and laminated-material routing.
The 0.6250-inch cutting diameter and 2.125-inch cutting edge support heavier and deeper routing work in solid wood, wood composites, laminated sheet goods, and selected plastics. The matching 0.625-inch shank provides a rigid machine interface for compatible CNC router toolholding systems.
This uncoated HW solid-carbide tool uses two flutes, right-hand rotation, and a 4.000-inch overall length. Correct collet condition, minimum practical projection, verified runout, suitable spindle speed, feed rate, depth-per-pass, workholding, and chip evacuation are essential for maintaining finish quality, dimensional control, and tool life.
Best Fit Applications
Product Highlights
Clean Top-Edge Downcut
The downcut spiral directs cutting pressure toward the workpiece to help reduce top-edge lifting in laminated and finished materials.
Heavy 5/8-Inch Tool Format
The 5/8-inch cutting diameter and matching shank provide a rigid configuration for compatible heavier-duty CNC routing work.
Extended 2-1/8-Inch Edge
The long cutting edge supports deeper grooves, dados, profiles, and production routing passes when chip evacuation is controlled.
Compatibility & Installation Notes
Confirm that the spindle and toolholder accept an exact 5/8-inch (15.88 mm) shank and provide sufficient clearance for the 4-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 RPM, feed rate, depth-per-pass, workholding, and chip evacuation to the selected material and machine conditions.
Improve Heavy-Duty Top-Edge Routing
The Royce Ayr 2-Flute General-Purpose Downcut Spiral Router Bit R57-32238 provides a rigid HW solid-carbide solution for routing solid wood, wood composites, laminated materials, and selected plastics.
Its 5/8-inch diameter, 2-1/8-inch cutting edge, 5/8-inch shank, right-hand rotation, and 4-inch overall length support clean top-edge machining when correctly held and operated within suitable cutting parameters.