Polaris wheel with ceramic bearings

prusaprinters

<p>My Polaris 180-280 seems to last about a year ( It's used 12 month's where I live ) before it needs new bearings. The bearings used are getting cheaper to buy but I thought I would try some of the ceramic bearings that Banggood.com sells online.</p> <p>To make the bearings work the supporting mounts for the wheels and the idler wheel needed to be made to accept a 6mm x 40mm and a single 6 x 35mm stainless steel bolt. Each large wheel takes a bolt, washer, bearing(606), spacer cut to size,bearing(606) and a washer.</p> <p>The Idler wheel only needs a washer on the outside as the new mount has a offset built in.</p> <p>I also made a turbine wheel bearing that takes a single 608 bearing. It's mounted with the bearing facing the spacer on the shaft. The 8mm pinion runs in the bearing. I think that running these with too much play will rapidly wear out the gears on the big wheels. Hopefull this will last longer.</p> <p>I print this in ABS and have parts in the pool for a couple of years with no problems.</p> <p>I keep nibbling away at this, maybe some day I can build a complete unit.</p> <p>Cheers</p> <p>Kisssys</p> Category: Replacement Parts