SEBO Spacer Washer 18/25/1.0 for the DUO — Single

Running clearance on a shaft is set by a washer of exactly this thickness, and on the SEBO DUO the number to order is 149. The designation 18/25/1.0 is the size, and the washer comes on its own.

Its whole job is to take up the gap between a rotating component and whatever it sits against, so the component turns where it is meant to and nowhere else. There is no adjustment available at this position — the spacer either is the right thickness or it is not, which is why substituting a washer that merely looks similar rarely ends well.

• Fits: the SEBO DUO
• Size: 18/25/1.0
• Job: sets running clearance on its shaft
• Pack: sold individually
• Installation: slides back onto the shaft in the original position
• Order as: SEBO part 149

Worn thin, or missing altogether after a previous repair, the spacer lets the part riding on that shaft wander sideways. It shows up as a knocking or grinding note that was not there before, as uneven wear on whatever sits either side of it, and as a machine that no longer feels smooth to push. Left alone, the side load keeps working on the neighbouring components and the bill grows.

Note how many spacers came off the shaft and in what order before anything is cleaned, since a stack of washers is easy to reassemble wrong and the running clearance depends on all of them together. Measuring the old one is worth the moment it takes: a spacer that has worn will read under its nominal thickness, and that is confirmation rather than a guess.

Anyone searching for a SEBO DUO spacer washer, a DUO shaft spacer or genuine SEBO part 149 has landed in the right place. Lay the old washer against the new one before reassembly to confirm the thickness matches, and check whether more than one sat on the shaft when you took it apart. Genuine SEBO part, shipped in 2–5 business days.