Shielded VS Rubber Seal Bearings

There is a small gap between the shield and inner ring in a shield bearing. Bearings fitted with shields are used where the operating conditions are relatively clean, or where low friction is important because of speed or operating temperature considerations.

The contact seal designed for maximum protection against all contaminants. The lip seal is pressed against the surface of the inner ring. It gives excellent dust and water protection. With lower speed and temperature lists, The contact seal bearings are used in situations where maximum sealing is critical.

The low-friction seals are designed for excellent contamination protection when torque levels are a consideration. Lower friction levels than the contact seal but designed for use in high contaminant environments.

The non-contact seals are designed for the higher speed, higher temperature requirements of applications such as electric motors. The non-contact seal bearing can be operated at the same speeds as shield bearings, but it has better sealing capability than a shield bearing. It has an extremely narrow gap with the inner ring shoulder.