The needle rollers are guided by the cages. The bearing without the (inner and outer) rings, Small radial (cross)section , Large capacity of heavy load, Suitable for the braced framing ( support structure) in which the radial installation size will be limited. The surface of the bearing journal and the surface of the outer shell which are assorted with the bearing can be used directly as the internal and external rolling surfaces . Needle roller and cage assemblies have single row type K and double row type KZW.
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