Seal - a contacting closure between the stationary and rotating members, for retaining lubricant within and excluding foreign material from the bearing. Seals are retained in the outer race and make positive contact with the inner race.
Shield - a closure for the same purpose as a seal but without positive contact.
A seal is more effective, but requires more turning effort (torque), generates more heat, and as a result, has a lower speed limit than an open or shielded bearing. To meet the high-speed operation, XW mostly using a large number of non-contact seals.
When required, our Seal and Shields can be meet the most demanding application requirements. In addition.