Mecanum Wheel remix (sunk in bolts and nuts)

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thanks for Zaggo's Mecanum Wheel MK2 sample. I basically pick up the idea and re-draw the whole thing in Solidworks. the original design from MK2 has the 624 ball bearing holdings too tight, I have to push them hard into the slots and most of the slots will just crack. the bolts and nuts in the original design also exposed out, might be problematic in use. in my version, the improvement made: enlarged ball bearing slot size, making them 0.2mm larger, so the bearing can be squeezed in just right. made the bolt and nuts sunk in, so once it's tightened up, it's secured for sure. This version requires: M4 x 40mm screw and nut set, quantity: 32 washer for the M4 screw/nut sets: 64 624 ball bearing, quantity: 32

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