Compression Shearing Action
Upward and downward shearing action supports both panel faces and helps prevent laminate chipping when top and bottom finish are critical.


Ultimax-coated three-flute right-hand compression router bit for CNC routing laminated or veneered wood and wood composites where both top and bottom finish are critical. The current live Royce Ayr series specification lists a 1/2-inch cutting diameter, 7/8-inch cutting edge, 0.380-inch upcut section, 1/2-inch shank, and 3-inch overall length.
Three-flute right-hand compression geometry with Ultimax coating. Upward and downward shearing action is designed to control chipping on both faces of laminated or veneered wood and wood-composite panels.
Designed for compatible CNC routers using precision 1/2-inch collets or approved 1/2-inch toolholding systems for nested routing, profiling, and compatible dado operations.
The Royce Ayr R60-12102UM is an Ultimax-coated three-flute compression router bit for laminated or veneered wood and wood composites where top and bottom finish is critical. The current live Royce Ayr series table lists a 0.5000-inch cutting diameter, 0.875-inch cutting edge, 0.380-inch upcut length, 0.500-inch shank, three flutes, right-hand rotation, and a 3.000-inch overall length.
Compression geometry combines upward and downward shearing action so both panel faces are supported during routing. Royce Ayr specifies this action to help prevent chipping of laminates, while the upcut section is intended to support chip-free dado routing in compatible laminated and veneered panel applications.
Ultimax is Royce Ayr's coated configuration for this family. Royce Ayr states that the coating was selected after testing multiple coatings to minimize friction, increase edge hardness, provide excellent adhesion, and deliver exceptional tool life specifically in nested-routing applications.
Technical Specifications
Upward and downward shearing action supports both panel faces and helps prevent laminate chipping when top and bottom finish are critical.
Royce Ayr specifies Ultimax to reduce friction, increase edge hardness, maintain coating adhesion, and extend tool life in nested-routing applications.
The current live Royce Ayr series database lists R60-12102UM with a 0.380-inch upcut section, paired with a 1/2-inch diameter and 7/8-inch cutting edge.
Confirm that the CNC router toolholder accepts the exact 1/2-inch (12.70 mm) shank and provides suitable clearance for the 3-inch overall tool length. Verify right-hand spindle rotation, inspect the collet and nut, minimize unsupported projection, check runout, secure the workpiece, and establish spindle speed, feed rate, pass depth, entry strategy, and extraction for the actual laminated, veneered, or wood-composite panel. This page uses the current live Royce Ayr series specification of 0.380 inch for UPCUT.
Royce Ayr R60-12102UM combines a 1/2-inch diameter, 7/8-inch cutting edge, 0.380-inch upcut section, 1/2-inch shank, three-flute compression geometry, right-hand rotation, Ultimax coating, and a 3-inch overall length.
Its opposing shear action is designed to protect both panel faces from laminate chipping, while the Ultimax coating targets friction reduction, edge hardness, adhesion, and tool life in nested CNC routing.