LM8UU-Style Bearing / Bushing Holder

thingiverse

A printable version of an LM8UU holder used in the Anet A8 and A6 printer ranges as well as others. Each print of this will also require 2 cable ties to hold the bearing in place. Ideally the holes on the back side will also need to be drilled and tapped with an M4 thread. I plan to design a belt holder to go alongside this part for the A8 x-axis. If using this design on the y axis you might find that your y endstop will no longer trigger as the bearing will go straight past the endstop that it would normally hit. I plan to revise this design to provide a separate bearing model eventually. For the time being spigandromeda took the time to make a part to raise the y endstop height to work around this issue. You can find this model in the comments or at the following link: https://www.thingiverse.com/thing:2536867 The pictures show both sides of the holder after tapping the holes and fitting the cable ties, bearing / bushing and screws. Print Settings Printer: Anet A8 Rafts: No Supports: No Resolution: 0.1 or 0.2 Infill: 40% Notes: When printing in PLA I used a fan speed 15% for high volume air blowers or 40-50% for low volume air blowers. Post-Printing 2 cable ties required per printed piece. Tapping of the four screw holes to M4 thread recommended. May be possible to force a thread directly with the screw but not recommended. I would not recommend threading through the entire length of the hole. The fit shown in the picture was achieved by threading to the point where the bit was about level with the exit hole. How I Designed This Measurement of original parts and bearings - design in OpenSCAD. 13/01/2018 Added _nuts variant - changed to provide recesses to hold nuts. This involved widening screw holes and increasing the amount of material above the nut position. Unless someone has printed this variant and confirmed it works please consider this untested and print accordingly (1 to test perhaps?). 24/07/2017 Upload of deeper variant with following feature changes: 0.6mm extra distance between the screw mounting side and the centre of the bearing mounting position. 0.4mm Increase in the length of the recess to hold bearing. This should allow for a slightly looser fit requested recently. 10/04/2017 Upload of image of print after fitting bearing, cable ties, tapping holes and inserting screws. 09/04/2017 Altered design to have holes through the part for easier tapping. Repositioned cable tie holes to not intersect with the screw holes. Previous version would not work well with screws inserted more than 4mm into the part. 08/04/2017 Resizing of cable tie holes Resized bearing recess Changed cable tie holes to have a gap in the back of the part rather than a hole in the top to improve strength of the part. First release