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Ceramic materials, such as silicon nitride, are gaining popularity for use in taper roller bearings because of their low density, high hardness, and excellent resistance to heat and corrosiontaper roller bearing material. Ceramic bearings can operate at higher speeds with less lubrication than their metal counterparts. However, they are brittle and sensitive to impact loads, which can limit their use in certain applications.

4627zz bearing dimensions. Dynamic Load Rating The dynamic load rating of 627ZZ bearings ranges from 1580 to 3090 pounds, depending on the size and quality of the bearing.