SBB-style Radial spherical plain bearings
Spherical Plain Bearings
Carbon Chromium Steel
have an inner ring with a sphered convex outside surface and an outer ring with a correspondly sphered but concave inside surface. Their design makes them particulary suitable for bearing arrangements where alignment movements between shaft and housing have to be accomodated, or where oscillating or reccurent tilting or slewing movements must be permitted at relatively slow sliding speeds.