SKF Needle roller / cylindrical roller thrust bearings combine a radial needle roller bearing and a cylindrical roller thrust bearing based on the 811 series. SKF supplies these bearings in the following two series:
- NKXR series, cylindrical roller thrust bearing is separable
- NKXR .. Z series, non-separable bearing
These SKF bearings are supplied without an inner ring. For applications where it is not possible to harden and grind the shaft, the bearings can be combined with an inner ring. Appropriate inner rings are listed in the product tables and can be ordered separately.
SKF Needle roller / cylindrical roller thrust bearings, NKXR series
SKF needle roller / cylindrical roller thrust bearings in the NKXR series are separable. Both the cylindrical roller and cage thrust assembly and shaft washer can be mounted separately from the rest of the bearing.
SKF Needle roller / cylindrical roller thrust bearings, NKXR .. Z series
SKF needle roller / cylindrical roller thrust bearings in the NKXR .. Z series are nonseparable. They have a stamped steel cover that extends over the shaft washer of the cylindrical roller thrust bearing. It is firmly attached to the housing washer that is integral to the needle roller bearing outer ring. The cover makes these bearings non-separable. SKF supplies the cylindrical roller thrust bearing in this series filled, as standard, with a high-quality grease that has good rust inhibiting properties. The cover, which has no lubrication holes, forms a gap-type seal with the shaft washer to retain the grease in the bearing.