bearings and gearboxes, roller chain for dry, abrasive and high-moisture For applications where running tolerance is critical, P6 or P5 tolerances.
White Paper on bearing tolerance and precision levels including definitions and specifications of ABEC and RBEC precision levels . ABEC 3, Class 6, P6.
ball bearings · Single row deep groove ball bearings Radial internal clearance: Single bearings, Matched bearing pairs · Recommended fits 61908-2RS1.
The designations of most SKF rolling bearings follow a system that may -ZNR, Shield on one side, snap ring groove in the outer ring, snap ring on the opposite side of the shield P6, Dimensional and running accuracy to P6 tolerance class.