Omni-directional Wheel 140mm

thingiverse

Update: 5/25/2019 Increased the rollers diameter. Increased the gap between main wheel and rollers. Added Motor mounts hub (5, 6 & 8mm bore) Omni Directional Wheel 140mm Diameter. I know there are other Omni wheels out there but I wanted as a wheel with more rollers so theoretically it would roll a little smoother. Fingers crossed. I also wanted one that would be bigger and easier to print. So I decided to design my own. I haven't tested with all four wheels yet (still printing), but the first one I printed rolls smoothly. Note: This part requires your printer to be very well calibrated. Hardware: 3mm filament for the axels 30 - M3 (8mm L) button head screws. 30 - M3 nuts. Printed Parts: 2 - Bolted half 2 - Nut half 1 - spacer (optional - needed if rollers rub together) Assemble: Pretty Straight forward. First 2 steps are the most helpful. 1 - Rotate the two halves to see the best possible alignment (Wheel may not be perfectly round). Once happy with the alignment, mark the two halves with a sharpie for reference later. Make sure all inner and outer holes line up 2 - Make sure the all the nut and screws fit in the slots. Carefully clean up areas with a X-acto knife. 3 - Place all the wheels and axels on the first half on the of the wheel. This is a good time to make sure all the wheel turn freely 4 - Using the alignment marks for step #1. Add the top half onto the assembled pieces. 5 - Carefully pick up the whole assembled part and add the screws and nuts. 6 - Repeat steps 1 - 5 for the next wheel assemble. 7 - Sandwich the spacer piece between the two assembles. I mirror the two assembles so the all the nuts are on the outside. The button head screws give better clearance for the small wheel. 8 - Enjoy :-)