Yet Another Low Friction Linear Bearing

thingiverse

Yeah, Yeah. I know this has already been done. Here's yet another linear bearing that I designed for my Anet A8. This version is my attempt at a lower friction design with significantly reduced contact surface area - about one-third less than what you find in most commercial versions. They fit tightly against both retaining rings so as not to slide around in the housing and also fit snugly around the 8MM Rod. Measurements: All dimensions are for an 8MM Rod Standard Bearing: 15MM OD, 24MM Long Standard Z Bearing: 15MM OD, 45MM Long Long Z Bearing: 15MM OD, 60MM Long (fills Motor and Idler Mount holes) I printed them in PLA using the settings I listed in the Print Settings section. To be honest, I wish I had done this sooner - no more bearing noise, and it almost eliminated ghosting. During my first assembly, I noticed that the cheapo metal bearings wobbled slightly as they moved along the 8mm rods. This was the main cause of most of my ghosting on the X and Y axis. If needed, use a dry lubricant like Teflon or graphite in the bearing but avoid liquid lubricants - these are nearly friction-free and almost silent. Keep in mind that I tweaked my printer settings specifically to print these, so if you print them, you may have to adjust yours for a tight fit as possible. Now on to reducing motor noise.....