1. Product Overview 6011-2RS1/C3GJN single row deep groove ball bearing, standard metric dimension 55×90×18mm. Code Definition 6011: Medium light deep groove ball base model 2RS1: Double-sided contact rubber lip seal for dust, water and impurity isolation C3GJN: Custom widened C3 radial clearance with matched special anti-high temp grease formula Classic deep groove raceway can bear radial load and slight bidirectional axial load simultaneously. Double lip contact rubber