Mass: 1.4kg/piece
Size: 55*120*29mm
B: Bearing contact angle is 40°
E: Optimized internal design
CB: Bearing for universal matching, two bearings arranged in back-to-back or face-to-face configuration
Cross Reference: 7311 BECBM, 7311BECBM, 7311BECBM/C3, 7311 BECBM/C3 and so on
Dimensions: 35*55*10mm
Mass: 0.075kg/pc
Sealing: Open without seal
C: 15° contact angle
TYN: Resin cage, this cage has lower friction and lower noise
SUL: Single universal, light preload.
P4:ISO class 4, equals to ABEC7
Mass: 0.31kg/pc
Dimensions: 35*72*15mm
Cage: Standard steel cage
B: High capacity & higher speed
SU: Single universal
C10: Metric series
PN7B: Bore And O.D. tolerance is tighter