Bosch Power Tools Expert puun pyöristysjyrsin, säde 7,9 mm, 8 mm varsi, kaksiteräinen, kuulalaakerilla

Every carpenter and DIY enthusiast knows the frustration of a chipped or rough edge after routing. The Bosch Expert for Wood Roundover Router Bit solves that problem with a precision-ground tungsten carbide cutting edge and a smooth-action pilot ball bearing. Whether you are softening the corners on a custom wooden toy, rounding over the edges of a new oak worktop, or adding a professional finish to a stair stringer, this bit offers exceptional control and durability.

Key specifications

• Product type: Roundover Router Bit
• Series: Expert for Wood
• Radius (R1): 7.9 mm
• Shank diameter: 8 mm
• Cutting diameter (D): 31.8 mm
• Cutting length (L): 16.5 mm
• Total length (G): 58 mm
• Number of flutes: 2
• Bearing type: Pilot ball bearing (bearing diameter 12.7 mm)
• Cutter material: Tungsten carbide (TC)
• Material suitability: Wood, wood composites, softwood, hardwood, MDF, plywood
• Tool compatibility: Hand-held routers, table-mounted routers

Why choose it

The two-flute geometry allows faster feed rates while still producing a clean cut, as chips are efficiently evacuated from the cutting zone. The pilot ball bearing follows the template or the already-cut edge precisely, giving you a consistent profile without the need for a fence. Bosch's Expert for Wood range uses high-quality carbide and is engineered for longevity, so you can rely on it for professional results even after extensive use.

Ideal use cases

• Rounding over square-edged boards for decorative furniture and cabinets
• Softening sharp edges on worktops, shelves, doors, and frames
• Creating classic rounded profiles on stair treads, handrails, and window sills
• Edge profiling on hardwood, softwood, MDF, plywood, and wood composites

Good to know

This router bit meets DIN EN-847 safety requirements for woodworking tools. Always disconnect the router from the power supply when changing bits. Match the router's spindle speed to the material and bit size—a slower speed for larger diameters reduces the risk of burning. For repeated cuts, use a guide bush or make multiple shallow passes to remove material gradually.