... frictional torque 3 .High Precision 4, rich stock Hot Sale Self Aligning Ball Bearing 1300 Series NSK SKF1. Self-aligning ... (135,1300,1301,1302,1303-1322,1303k-1322k)Other models availble:Miniature series:10x,12x, General series:12xx,13xx ... load. They are widely used in precision instruments, low noise machine, automobile, motorcycle, metallurgy, rolling mill, mining, petroleum, papermaking, cement ...