Y axis pulley bushes for TronXY P802MA by AAZeroThree4

Last crawled date: 3 years, 1 month ago

I made some parts for silencing my printer the TronXY P802MA. After silencing the motors with silicone acoustic washers and PLA bushes to press the washers properly, I've been trying to silence the remaining noise. This was mainly coming from the Y axis pulley.
While inspecting the bearing it appears the wrong washers have been used. There are four washers in the assembly. The big ones are not the problem. The two small ones are supposed to grip the inner bearing ring, while the rest of the bearing rotates.
The issue is the small washers have an outside diameter of 10mm and the inner bearing has a larger diameter of 7mm. So the bearing is not working as a bearing, the outer bearing will be rubbing against the small washers and making a lot of noise!
This part replaces the small washer with the correct dimensions. It includes a sleeve for the play between the 5mm screw thread width and its 5.6mm inside diameter.
You will need two but it is best to print one and then let the bed cool and then remove it. Then print the second one. Your slicer might show some small gaps in the walls, a few don't matter.
If you don't let the bed cool properly the part will deform. You can re-form it by placing it on a heated bed.
Enjoy the silence!!