[mikeleslie]

We have used a 360 deg rotation turret for the last 2 years. We have used a very large "ring" and 4 bearing blocks. the blocks clamp the ring in place. THis years ring was 24 inches in diamater. The larger it gets, the lower the forces, less clamping force is required and the bearing blocks can mount to the frame, which reduces the structural requirements. It was turned with a fp motor/trans combo with a 4 in skyway wheel. The benefit of this setup is that if there are very high rotational forces, it will slip instead of break, so if you get caught in the rack, it will tend to rotate out instead of stress the chain. I'll try and find a better pic later