A rotation mechanism uses a gas passage to exhaust gas from the gap between the rotary member and housing.
Transverse recesses in the cam follower roller reduce material thickness near edges, equalizing contact pressure and lowering mechanical stress.
A motor bearing uses a spring-loaded pusher to adjust inner ring friction based on air pressure from an impeller.
Shot peening induces residual compressive stress in the surface layer of a shell-type radial needle bearing outer ring.
Polyether ether ketone coating on pile driver sliding surfaces reduces corrosion and wear during underwater operation.