Verified Left-Hand Rotation
This SKU is specifically identified for left-hand cutting direction and must be used only with a compatible left-hand spindle setup.
Royce Ayr 2-Flute Downcut Spiral Router Bit 1/4" (6.35mm) – Left-Hand
CA$63.85
In stock
SKU
R57-22215
Product Type
2-Flute Downcut Spiral Router Bit
Diameter
1/4 in (6.35 mm)
Cutting Edge
1 in (25.4 mm)
Shank
1/4 in (6.35 mm)
Overall Length
2-1/2 in (63.5 mm)
Flutes
2
Rotation
Left-Hand (LH)
Construction
Solid Carbide / SC Downcut Spiral
Application
CNC Routing,Mortising,Dado Cutting,Groove Cutting,Clean Top-Edge Routing
Material Suitability
Solid Wood,Wood Composites,Laminated Material,Some Plastics
2-Flute
Left-Hand Downcut
Spiral Router Bit
Solid-carbide left-hand downcut spiral router bit designed for CNC routing, mortising, dado cutting, groove cutting, pocketing, and clean top-edge machining. Its 1/4-inch cutting diameter, 1-inch cutting edge, 1/4-inch shank, and 2-1/2-inch overall length suit compatible left-hand spindle and toolholding systems.
D=1/4 in6.35 mm Diameter
CE=1 in25.4 mm Cutting Edge
Sh=1/4 in6.35 mm Shank
LHLeft-Hand Rotation
Left-Hand Downcut Spiral Bit
This compact production tool combines solid-carbide construction, two downcut spiral flutes, left-hand rotation, and a precision 1/4-inch shank for controlled routing where top-edge quality and left-hand cutting direction are required.
Solid Carbide2 FlutesLH DowncutSKU R57-22215
Designed for compatible CNC routers and routing spindles that accept a 1/4-inch shank and require left-hand rotation.
Main Product Description
The Royce Ayr 2-Flute Left-Hand Downcut Spiral Router Bit R57-22215 is designed for clean top-edge cutting in production routing applications. Its downcut geometry directs cutting pressure into the workpiece, helping reduce top-side chipping when machining laminated panels, dados, grooves, pockets, mortises, and routed features where the visible face matters.
The 1/4-inch cutting diameter, 1-inch cutting edge, matching 1/4-inch shank, and 2-1/2-inch overall length provide a compact format for panel processing, mortising, groove routing, and controlled small-diameter CNC work. This SKU is specifically identified for left-hand rotation and must be matched to a compatible spindle and toolholder.
This solid-carbide tool uses two downcut spiral flutes and is listed for supported 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 reliable performance.
Technical Specifications
Left-Hand Downcut Bit R57-22215
- Royce Ayr
- 2-Flute Left-Hand Downcut Spiral Router Bit
- R57-22215
- R57-222/322 Downcut Spiral 2 Flute
- Solid Carbide CNC Router Tooling
- 1/4 in (6.35 mm)
- 1 in (25.4 mm)
- 1/4 in (6.35 mm)
- 2-1/2 in (63.5 mm)
- 2
- Left-Hand (LH)
- Solid Carbide · Downcut Spiral
- Solid Wood, Wood Composites, Laminated Material, and Selected Plastics
- CNC Routers and Routing Spindles with 1/4-Inch Toolholding and Left-Hand Rotation
Best Fit Applications
Left-Hand CNC Routing
Mortising & Pocketing
Dados & Grooves
Laminated Panel Routing
Wood & Composite Machining
Product Highlights
Clean Top-Edge Downcut
The downcut spiral directs cutting pressure into the workpiece to help reduce upper-edge chipping in laminated and wood-based materials.
Compact Production Format
The 1/4-inch diameter, 1-inch cutting edge, matching shank, and 2-1/2-inch overall length suit controlled small-diameter routing.
Compatibility & Installation Notes
Confirm the machine spindle rotation before ordering or running this tool. SKU R57-22215 is a left-hand rotation bit and is not interchangeable with a right-hand tool in a standard right-hand spindle setup. Verify that the collet or toolholder accepts an exact 1/4-inch (6.35 mm) shank and provides adequate clearance for the 2-1/2-inch overall length and required projection. Inspect and clean the collet, minimize unsupported projection, verify runout, and match spindle speed, feed rate, cut depth, workholding, and dust or chip evacuation to the selected material.
Control Left-Hand Downcut Routing
The Royce Ayr 2-Flute Left-Hand Downcut Spiral Router Bit R57-22215 provides a solid-carbide solution for clean top-edge routing, mortising, dado cutting, groove cutting, and pocketing in compatible materials.
Its 1/4-inch cutting diameter, 1-inch cutting edge, matching shank, two-flute downcut geometry, left-hand rotation, and 2-1/2-inch overall length support controlled production machining when correctly matched to the spindle and toolholder.