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Improved sealing for NSK self-lube bearing range

03 June 2010

NSK is providing improved sealing and life performance across its complete range of RHP self-lube mounted bearing units, including high and low temperature HLT versions, with the introduction of its robust S-design seal on all inserts with diameters up to a maximum of 100mm.

The S-design seal, previously available only on self-lube units up to 45mm bore, offers the advantages of greater robustness and lower torque operation. It comprises a strong steel former, which is firmly secured in the outer ring of the bearing, allied with a flexible nitrile rubber sealing lip that contacts with the fine- ground finish of the inner ring to give low friction performance and improved sealing capability.

The introduction of the S-design seal across the entire self-lube range expands the range of sealing options available. Above the S-design is the Flinger seal for more hostile environments. The Flinger seal provides increased levels of protection without any loss of rated bearing speed due to the non-contacting lip. It provides a first line barrier against contamination and thus improves bearing life.

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