MA type spherical roller bearing guided by outer ring , for example 22311-E1A-MA-T41A , detailed suffix meaning , E1 stands for enhanced design , A means improved internal structure , MA means solid brass cage , guided by outer ring , T41A means this type bearing suitable for vibration loading, narrow diameter tolerance zone ,internal radial clearance is C4 .MA type spherical roller bearing mainly used in mining machine and vibration pressure equipment , such as vibrating screen, road roller,sawtooth cutting machinery. WSBC 22311-E1A-MA-T41A can replace to SKF , FAG , TIMKEN brand . High quality bearing with competitive price will help you save much factory production cost . We can guarantee promptly delivery and after sale service , if you have demand for WSBC 22311-E1A-MA-T41A bearing or want know more about bearings , pls do free to contact us .