Brompton rollers/wheels replacement with bearing

prusaprinters

<p>Fully 3D-printable Brompton rollers with an bearing in the middle for easy rolling.</p> <p>The rollers are printed in 3 pieces: the top part and the bottom part with a bearing and the rubber sandwiched and screwed together.</p> <p>What you need per wheel:<br/> 1x Standard 22x7mm bearing<br/> 2x M4x12 scews<br/> 2x M4 nuts<br/> 1x 8mm to 4mm insert for the inside of the bearing so your wheel doesn't wobble arround with the screw. You can 3D print the insert that I have put in the files section but it's not ideal. An insert made out of metal would be much better.<br/> 1x the screw that came with your stock rollers</p> <h3>Print instructions</h3><p>The bottom and top part are printed in ASA in my case, but PETG or similar should be fine too. The rubber part is printed in TPU.</p> <p>Support is only needed for the M4 nut holes on the top part.</p>