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Festool ROTEX RO 90 sander port: measured 27 mm (D27) hose port. What shop-vac hose fits it and the exact reducer to join it to a 1-1/4, 2-1/2 or 4 inch hose.

Updated 05 September 2026.

PORT / HOSE

Festool ROTEX RO 90 sander port dust port size

The measured dimensions of the Festool ROTEX RO 90 sander port and the hose sizes it mates with.

OD27 mm1-1/16 in, 27 mm

Rings drawn to scale from the measured diameters in the table below.

Measured port dimensions

Port typemale spigot (hose goes over it)
Outer diameter (OD)1-1/16 in, 27 mm
Manufacturer designation27 mm (D27) hose port
Mating diameter (mm)27

Shop notes

Found on: Festool RO 90 DX, RO 125 and RO 150 multi-mode sanders.

The ROTEX sanders take the 27 mm D27 hose tip supplied on every CT extractor. It is the standard Festool sanding connection, and the tapered tip also reaches 35 mm EU ports at a push.

Connect this port

Questions and answers

What is the port type of the Festool ROTEX RO 90 sander port dust port size?

male spigot (hose goes over it)

What is the outer diameter (od) of the Festool ROTEX RO 90 sander port dust port size?

1-1/16 in, 27 mm

What is the manufacturer designation of the Festool ROTEX RO 90 sander port dust port size?

27 mm (D27) hose port

What is the mating diameter (mm) of the Festool ROTEX RO 90 sander port dust port size?

27