I think I've found the issue with vibration and bearing noise.
I put a micrometer on my x-axis rods, and the diameter came up to 0.3125", which is 5/16". The linear bearings, as best I can tell are for 8mm, which is 0.315". With that slop, vibration will occur and resonate through the printer.
Can anyone else confirm the bearing size and their rods?
Re: I think I've found the issue with vibration and bearing noise.
I put a micrometer on my x-axis rods, and the diameter came up to 0.3125", which is 5/16". The linear bearings, as best I can tell are for 8mm, which is 0.315". With that slop, vibration will occur and resonate through the printer.
Can anyone else confirm the bearing size and their rods?
I just checked all mine (X, Y, and Z). I get between 7.96mm and 8.00 millimeters, any variance I blame on my measuring skills. Converting to imperial, that is between 0.313 to 0.315.
John
Re: I think I've found the issue with vibration and bearing noise.
Yeah, but a proper linear shaft should have a tolerance of 0.3150" / 0.3146" (8.001mm / 7.990mm). So in the world of metrics 7.96 is out of spec, and the 0.3125" (7.9375mm) I get is grossly out of spec.
As comparison, look at the actual specs on linear bearing shafts: http://www.thomsonlinear.com/en/product/8%20MM%20SS%20RL
No wonder my printer vibrates.