The seated outer spherical bearing consists of a double-sided sealed wide inner ring deep groove ball bearing with a spherical outer section and a bearing seat.
Ym maes peiriannau diwydiannol a pheirianneg fanwl gywir, mae berynnau pêl rhigol yn gydrannau sylfaenol sy'n sicrhau gweithrediad llyfn o dan lwythi amrywiol.