Deep groove ball bearings are versatile. They are simple in design, non-separable, suitable for high speeds and are robust in operation, requiring little maintenance. Because deep groove ball bearings are the most widely used bearing type, they are available from SKF in many designs, variants and sizes.
2RS1 - Contact seal, NBR, on one or both sides 2Z - Shield on one or both sides
C3 - Radial internal clearance greater than normal
2RZ - Non-contact seal, NBR, on one or both sides