Which machines are compatible with this Festool roundover bit?

This bit is designed for use with the Festool OFK 500 and OFKC 500 edge routers.

What are the dimensions and radius of this cutter?

The cutter has a diameter of 27 mm and a 1 mm rounding radius (R1).

Which materials can be processed with this router bit?

It is engineered for smooth roundovers on solid wood and plastic edge banding.

How do you mount this bit to the router?

The collet-free hollow-shaft design mounts directly to the spindle with a central screw.

What is the benefit of the single-flute (Z1) design?

The single cutter reduces heat buildup during routing to help prevent burn marks.

FESTOOL HW R1-OFK 500 Z1 round-off cutter - 578376

Name: FESTOOL HW R1-OFK 500 Z1 round-off cutter - 578376
Brand: FESTOOL
SKU: 08134278
Price: 58.4 EUR
Availability: PreOrder

Supplier number: FESTOOL 578376 | EAN 4014549451175

Recommended Retail Price €72.77

58.40 tax incl.

€48.26 excl. VAT (incl. all environmental contributions)

On order: delivered from 17/10/2026

Ordered before 20:00 - delivered as of 17/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

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Consumables

FESTOOL KLS-D 15,8-OFK starting ball bearing - 490249

Recommended Retail Price €29.50

20.95

€17.31 excl. VAT

On stock, immediately available.

Accurate rounding for delicate edges

Practical benefits

Exact Festool spindle mounting: You mount the cutter directly onto the spindle to achieve high concentricity and a clean finish.
Reduced risk of scorches: The Z1 single-flute cutting edge minimizes heat buildup when you rout across grain or plastic edges.
Smooth transitions on surfaces: With the built-in 5° relief angle, you profile edges cleanly without marking or damaging the workpiece.

In a nutshell

The right choise for

With the Festool hw R1-OFK 500 Z1 roundover bit, you profile delicate solid wood edges and plastic edge banding with clean, splinter-free precision. Designed for the Festool ofk 500 and ofkc 500 edge routers, this 27 mm cutter mounts directly to the spindle without a collet, delivering exceptional runout accuracy and wobble-free control. Its single-flute Z1 carbide design limits heat buildup to prevent unsightly burn marks when routing across the grain. The integrated 5° relief angle at the cutter edge ensures smooth transitions without marking the workpiece surface, giving you a flawless 1 mm radius every time.

Product information FAQ

€58.40

tax incl.

Key features according to our expert

Diameter: 27 mm
Router bit type: Chamfer cutter
With bearing: Yes
Radius 1: 1 mm

Product description

Roundover cutter

The Roundover cutter is just the thing for delicate, small-scale edge work. It's mostly for solid wood, but you can also use it on plastic edges. The special hollow core cutter fits right onto the spindle, which means you get top-notch run-out accuracy and a really neat routing finish.

Single-edged cutter (Z1): Less heat buildup means fewer scorch marks when routing across the grain.
Special cutter: For rounding off edges, innit?
Cutter radius: Spot on for the ball bearing.
To protect the surface: The radius transitions into a 5° run-out on the router blade.
Low installation height: The flush ball bearing mount of the cutter lets you route in rebates or on a stack of panels.

Ideally suited for

For rounding plastic or solid wood edging
For finishing off solid wood

All Features

Diameter: 27 mm
Router bit type: Chamfer cutter
With bearing: Yes
Radius 1: 1 mm
D: 27.00 mm
No. of teeth: 1
R: 1.00 mm

Brand FESTOOL
08134278
EAN 4014549451175
Supplier number FESTOOL 578376

Frequently asked questions about this product

Answered by specialists

Which machines are compatible with this Festool roundover bit?: This bit is designed for use with the Festool OFK 500 and OFKC 500 edge routers.
What are the dimensions and radius of this cutter?: The cutter has a diameter of 27 mm and a 1 mm rounding radius (R1).
Which materials can be processed with this router bit?: It is engineered for smooth roundovers on solid wood and plastic edge banding.
How do you mount this bit to the router?: The collet-free hollow-shaft design mounts directly to the spindle with a central screw.
What is the benefit of the single-flute (Z1) design?: The single cutter reduces heat buildup during routing to help prevent burn marks.