R2 rounding cutter with guide bearing

Brief description

The R2 rounding bit is one of our smallest quarter-round bits. With its replaceable guide ball bearing two carbide-tipped cutting edges, it ensures clean, smooth curves—whether you’re working on straight or curved edges. The 2-mm radius creates subtle curves for a comfortable grip.

The guide ball bearing Ø 12.7 mm) guides the router bit along the edge of the workpiece; if it wears out, you can replace it individually. The router bit fits in RUWI and standard hand-held and bench routers withcollet. We use it in our own workshop to round off edges evenly.

If you need larger radii, the RUWI offer rounding cutters ranging from R3 to R12.7.

Applications

• Evenly round edges – straight or curved, R2 for subtle curves
• Move along the edge using guide ball bearing Ø 12.7 mm) without side guidance
• For softwood, hardwood, and coated panels.
• Two carbide cutting edges (Z2), right-hand rotation, 17 mm head diameter
• 8-mmshank RUWI router tables, hand-held and bench-top routers, and CNC machines

Downloads

RUWI Product Catalog 2026 (PDF)

All the details

• Profile and cutting edges
- R2 mm rounding radius for subtle edge rounding
- Double-edged (Z2)
- right-hand rotation

• Dimensions and design
- Outer diameter: Ø 17 mm
- shank 8 mm, shank length 32 mm
- working length: 10 mm, overall length: 56 mm
- Weight: approx. 29 g

• guide ball bearing
- Ball bearing Ø 12.7 mm, replaceable

• Material
- Carbide (HW)

• Compatibility
- For softwood, hardwood, and coated panels
- Can be used on RUWI , hand-held and bench routers, as well as CNC machines