... spherical seat cushion type or with spherical seat type. 3. High quality steel - used can extend bearing life highest 80% super clean ... part of the axial load, low speed, such as crane hook, vertical pumps, vertical centrifuge, jack, low speed reducer, etc. The ... .init( { 'aImgSrc': aBigImageSrc } ); } )(); 51100 thrust ball bearing with dustproof cover high quality