Typically each arm has a spherical joint ( ball joint ) or rubber bushing at each end.
2.
Rotation around this joint may still be limited unless the spherical joint is composed of several plates that can either fan out or stack up onto themselves as the human ball joint moves through its full range of motion.
3.
The flanges of the second and third driving wheels were made thinner, and the coupling rods between the third and fourth sets of driving wheels used spherical joints, all to create side play and hence flexibility in operations.
4.
Using a spherical joint as opposed to a universal joint also eliminates the problematic possibility of a Plain spherical bearings can be used in place of SRJs at the cost of increased friction, but offer an opportunity to preload the joint further.
मोबाइल