Large 1-Inch Cutting Diameter
The verified diameter supports heavier routing operations when the machine, spindle, and toolholder are correctly rated and matched.


HW solid-carbide right-hand downcut spiral router bit designed for heavier CNC routing in solid wood, wood composites, laminated materials, and selected plastics. Its 1-inch cutting diameter, 3-inch cutting edge, matching 1-inch shank, and 6-inch overall length support large dados, deeper grooves, pockets, profiles, panel machining, and other extended-reach routing operations.
This extended production tool combines HW solid-carbide construction, two downcut spiral flutes, right-hand rotation, no coating, and a 1-inch shank for heavier routing where clean upper edges and substantial cutting reach are required.
Designed for compatible CNC routers and routing equipment using a rated 1-inch collet, chuck, or approved toolholding assembly with right-hand spindle rotation and adequate tool-length clearance.
The Royce Ayr 2-Flute Downcut Spiral Router Bit R57-32243 is designed for general-purpose heavy routing in woodworking and panel-processing applications. Its downcut spiral geometry directs cutting pressure toward the workpiece, helping support the top surface and reduce upper-edge chipping during large dados, grooves, pockets, profiles, and laminated-panel machining.
The 1.0000-inch cutting diameter and 3.000-inch cutting edge provide substantial cutting capacity for extended-depth operations. The matching 1.000-inch shank and 6.000-inch overall length require a correctly rated machine spindle, collet, chuck, or toolholder with sufficient projection control, rigidity, and operating clearance.
This uncoated HW solid-carbide tool uses two downcut spiral flutes and right-hand rotation. It is listed for solid wood, wood composites, laminated material, and selected plastics. Correct toolholding, minimum practical projection, verified runout, suitable RPM, feed rate, chipload, cutting depth, workholding, guarding, and chip or dust evacuation are essential for safe, stable production use.
Technical Specifications
The verified diameter supports heavier routing operations when the machine, spindle, and toolholder are correctly rated and matched.
The downcut spiral directs cutting pressure toward the workpiece to help control upper-edge chipping in laminated and wood-based materials.
The 3-inch cutting edge and 6-inch overall length provide capacity for deeper routing while requiring careful projection and clearance control.
Confirm that the spindle, collet, chuck, and toolholder are rated for an exact 1-inch (25.4 mm) shank, support right-hand rotation, and provide adequate clearance for the 6-inch overall length and required projection. Verify the programmed cutting depth against the 3-inch cutting edge. Because this is a large, extended tool, confirm spindle power, RPM, feed rate, chipload, pass depth, runout, workholding, guarding, dust extraction, and machine clearance before production use.
The Royce Ayr 2-Flute Downcut Spiral Router Bit R57-32243 provides an uncoated HW solid-carbide solution for heavier clean-top-edge routing in solid wood, wood composites, laminated materials, and selected plastics.
Its 1-inch cutting diameter, 3-inch cutting edge, matching shank, two-flute downcut geometry, right-hand rotation, and 6-inch overall length support extended production machining when correctly matched to the machine and toolholding system.