Deep-Groove Ball Bearing 003.jpg

The letters L, N, P, K, T, & S are used by ABEC to indicate radial clearance amounts. C1, C2, C3, C4, C5 are used by DIN to indicate radial clearance amounts. Abec uses A1, A3, A5, A7, & A9 to indicate tolerance class & DIN uses P3, P4, P5, & P6 to indicate tolerance class. In this picture the "V" shaped pressure anvil has been mounted. Pressure springs are in place also.