R8 rounding end mill with guide bearing

Brief description

The R8 rounding router bit rounds wooden edges with an 8 mm radius – a large radius for strongly rounded, tactile edges. The pilot ball bearing (Ø 12.7 mm) on the router bit head runs along the workpiece edge and guides the router bit, even on curved contours where a fence won't fit. This way, you can round straight edges as well as curved tabletops or handrails.

The router bit is double-edged and carbide-tipped (HW), right-hand rotation, with an outer diameter of 29 mm and a cutting length of 13 mm. Its shank fits in hand routers, bench routers, and the RUWI router table collet), as well as on CNC machines. It cuts softwood, hardwood, MDF, and laminated panels. If the ball bearing wears out, you can replace it—instead of having to replace the entire router bit.

For large radii and the 29 mm diameter head router table it’s worth using a router table it runs more smoothly and safely than freehand. You can find more router bits in the RUWI , and the matching tables in the RUWI .

Applications

• Round edges with an 8 mm radius – on straight and curved workpieces
• Rout shaped contours without a fence – the pilot bearing follows the edge
• Give a substantial radius to furniture edges, tabletops, stair treads, and handrails
• Double-edged carbide end mill, right-hand rotation, outer diameter 29 mm, effective length 13 mm
• shank mm shank for hand-held router, RUWI router table CNC
• For softwood, hardwood, MDF, and coated panels
• Replaceable guide bearing (Ø 12.7 mm).

Downloads

RUWI Product Catalog 2026 (PDF)

All the details

• Profile and cutting edges
- Fillet radius R8 mm
- Double-edged (Z2)
- right-hand rotation

• Dimensions and Design
- Outer diameter: Ø 29 mm
- shank 8 mm, shank length 32 mm
- working length: 13 mm, overall length: 59 mm
- Weight: approx. 42 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