Yes, I see your point. I wondered if my approach would be sufficient for a prototype as it is a thousand times simpler than separate bearings, hence the proposal simple 20mm hole is only machining, no turned shaft, no turning of the tube for shoulders, etc.). What would be the greatest weakness...
Its a simple image but it shows the proposed arrangement for a 4 wheel agricultural robot. We want a simple design and thought 2 'thrust' type bearings 'squeezed' either side of a plate would be OK to give a study leg and the ability to steer (90-degree worm motor connected to the shaft at the...