Top & Bottom Edge Control
Opposing upward and downward shearing action is engineered to reduce laminate chipping on both panel faces when the compression zone is properly engaged.


Three-flute, right-hand compression tooling for routing laminated or veneered wood and wood composites when clean top and bottom edges are critical. The 3/8-inch diameter, 1-1/8-inch cutting edge, 3/8-inch upcut section, 3/8-inch shank, and 3-inch overall length combine opposing shear directions with Royce Ayr Ultimax coating for nested-routing production.
Three-flute compression geometry combines upward and downward shearing action to help protect both panel faces while routing laminated, veneered, and wood-composite materials. The short upcut section supports chip-free dado routing when the cut is correctly engaged.
Designed for compatible CNC routers using precision 3/8-inch collets or approved 3/8-inch toolholding systems in cabinet, casegoods, and nested-panel production.
The Royce Ayr R60-11501UM is a three-flute Ultimax compression router bit for laminated or veneered wood and wood composites where top and bottom finish is critical. Its opposing upward and downward shearing action is designed to reduce chipping on both panel faces during compatible CNC routing operations.
The published configuration uses a 0.3750-inch cutting diameter, 1.125-inch cutting edge, 0.375-inch upcut length, 0.375-inch shank, three flutes, right-hand rotation, and a 3.000-inch overall length. The short upcut zone allows a chip-free dado to be routed when tool engagement, entry depth, feeds, speeds, and workholding are correctly established.
Royce Ayr specifies Ultimax coating for this UM variant. The manufacturer describes the coating as selected through multi-coating testing to minimize friction, increase edge hardness, provide strong adhesion, and extend tool life specifically in nested-routing applications. Product data lists material code HC; this code is preserved exactly as published while the family is categorized by Royce Ayr under Solid Carbide Tooling.
Technical Specifications
Opposing upward and downward shearing action is engineered to reduce laminate chipping on both panel faces when the compression zone is properly engaged.
The published 0.375-inch upcut length provides the short lower cutting zone Royce Ayr specifies for chip-free dado routing in compatible panel materials.
Royce Ayr specifies Ultimax to reduce friction, increase edge hardness, improve adhesion, and extend service life in demanding nested-routing applications.
Confirm that the CNC router toolholder accepts the exact 3/8-inch (9.525 mm) shank and provides suitable clearance for the 3-inch overall tool length. For compression routing, program the entry and cutting depth so the material is engaged by the intended upcut and downcut zones; incorrect vertical engagement can compromise top or bottom edge quality. Inspect the collet and nut, minimize unsupported projection, verify runout, secure the panel, and establish spindle speed, feed rate, pass depth, and dust extraction for the actual laminate, veneer, and core construction.
Royce Ayr R60-11501UM combines a 3/8-inch diameter, 1-1/8-inch cutting edge, 3/8-inch upcut section, 3/8-inch shank, three right-hand flutes, and 3-inch overall length for laminated, veneered, and wood-composite CNC panel routing.
The triple-flute compression geometry protects top and bottom surfaces through opposing shear directions, while the Ultimax-coated UM configuration is specifically positioned by Royce Ayr for extended performance in nested-routing production.