Which tools is this roundover cutter compatible with?

This cutter is specifically designed for the Festool OFK 500 and OFKC 500 edge routers.

What are the main dimensions of this cutter?

The cutter features a diameter of 27 mm and a roundover radius of 3 mm.

Which materials can be processed with this router bit?

This carbide-tipped bit is suitable for profiling solid wood and plastic edge banding.

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

The single cutting edge reduces heat buildup and helps prevent burn marks during cuts.

How is this cutter mounted to the router?

It mounts directly onto the router spindle via a direct thread, requiring no collet.

FESTOOL HW R3-OFK 500 Z1 round-off cutter - 578378

Name: FESTOOL HW R3-OFK 500 Z1 round-off cutter - 578378
Brand: FESTOOL
SKU: 08134280
Price: 56.8 EUR
Availability: PreOrder

Supplier number: FESTOOL 578378 | EAN 4014549451199

Recommended Retail Price €72.77

56.80 tax incl.

€46.94 excl. VAT (incl. all environmental contributions)

On order: delivered from 16/10/2026

Ordered before 20:00 - delivered as of 16/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

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.

Clean edge finishing with Festool

Practical benefits

Consistent and smooth radius: You achieve a clean R3 roundover on solid timber and plastic edge banding with complete precision.
Reduced friction and burning: The Z1 single-flute design limits heat buildup, helping you prevent burn marks when routing delicate edges.
Collet-free direct spindle mounting: You secure the bit directly onto the router spindle for exceptional run-out accuracy and wobble-free stability.

In a nutshell

The right choise for

With the Festool roundover cutter hw R3-OFK 500 Z1, you achieve smooth and consistent edge profiles on solid wood and plastic edge banding. This 27 mm diameter carbide router bit shapes a uniform 3 mm radius, eliminating the need for manual sanding or scraping. The Z1 single-flute design minimizes friction and heat buildup, effectively preventing burn marks across delicate workpieces. Designed for direct spindle mounting, it threads straight onto Festool ofk 500 and ofkc 500 edge routers without a collet. This direct connection ensures exceptional run-out accuracy and wobble-free stability for clean, professional results.

Product information FAQ

€56.80

tax incl.

Key features according to our expert

Diameter: 27 mm
Router bit type: Chamfer cutter
With bearing: Yes
Radius 1: 3 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: 3 mm
D: 27.00 mm
No. of teeth: 1
R: 3.00 mm

Brand FESTOOL
08134280
EAN 4014549451199
Supplier number FESTOOL 578378

Frequently asked questions about this product

Answered by specialists

Which tools is this roundover cutter compatible with?: This cutter is specifically designed for the Festool OFK 500 and OFKC 500 edge routers.
What are the main dimensions of this cutter?: The cutter features a diameter of 27 mm and a roundover radius of 3 mm.
Which materials can be processed with this router bit?: This carbide-tipped bit is suitable for profiling solid wood and plastic edge banding.
What is the benefit of the single-flute Z1 design?: The single cutting edge reduces heat buildup and helps prevent burn marks during cuts.
How is this cutter mounted to the router?: It mounts directly onto the router spindle via a direct thread, requiring no collet.