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Bearings with shields are primarily intended for applications where the inner ring rotates. Shields are fitted in the outer ring and do not make contact with the inner ring, but form a narrow gap with it. Shields are made of sheet steel.
Depending on the bearing design, series and size, SKF supplies shields in different designs. Shields identified by the designation suffix Z typically have an extension in the shield bore (fig. 1) to form a long, narrow gap with the inner ring shoulder. Some shields do not have the extension (fig. 2).
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