This is a very purpose-specific item... Here's a quick video for a little more info on what this is.

Hoover carpet cleaner (PowerScrub SpinScrub 50), and probably many other models -- the spinning carpet-scrubber part of it stopped spinning.

I found a stripped gear in the turbine assembly was the cause of failure. I modeled a replacement and it fits perfectly; as good as new. It's a super easy repair, about a dozen phillips screws, nothing more.

The gear this item replaces has these characters embossed on it (for search results):
>POM< DC2 38558004

Oh, and grease it up nice and good. While you're in there make sure the bearing isn't seized up (jam a screwdriver and give it some good strong turns to break it free)

Printing:

Doesn't need any rim, support, whatever, standard default settings. Obviously print large flat side down. If anything give it an extra perimeter or two for strength.

Use pretty much any material other than PLA (I used PETG and feel good about that decision. Nylon would be an excellent choice).

Grease it up (make sure your grease doesn't eat plastic)

The washer goes on first. Washer is separate for printability reasons, no performance change.

.2mm layer height is probably best

Hoover Carpet Cleaner Gear

This is just a spacer that goes below the Hoover Gear to keep things aligned.

Hoover Gear.stl

Activity related to collaborating with others on models

Likes, comments, and activity from your community

A roundup of models that we think you'll like

For when we think someone might have posted your content as their own

New content from your premium memberships

Emails and messages from designers you follow

lovejoyr

Hoover Carpet Cleaner Gear