Cookies on the SKF website

We use cookies to ensure that we give you the best experience on our websites and web applications. By continuing without changing your browser settings, we assume you give your consent to receive cookies. However, you can change your browser cookie setting at any time.

Needle roller and cage assemblies

Needle roller and cage assembly
SKF needle roller and cage assemblies are self­-contained, ready-­to­-mount bearings. In applications where the shaft and housing bore can serve as raceways, the assemblies can be used to create bearing arrangements that require minimal radial space.

Bearing features

  • Lowest cross section among rolling bearings
    In applications where less space is available, needle roller and cage assemblies offer a very compact solution.
  • High load carrying capacity
    Due to their large number of rollers, needle roller and cage assemblies have a high load carrying capacity.
  • High stiffness
    Due to their large number of small-diameter rollers, needle roller and cage assemblies have high stiffness.

Designs and variants

Basic design bearings (series designation K)
  • single row design (fig. 1, no designation suffix)
  • double row design (fig. 2, designation suffix ZW)
They are characterized by the following properties:
  • simple to mount and robust
  • accurate roller guidance in the cage pockets
  • good running performance
Other needle roller and cage assemblies

Needle roller and cage assemblies with a split cage can be used where raceways are recessed in the shaft (fig. 3).

Special needle roller and cage assemblies are used for the gudgeon (wrist) pin (fig. 4) and crank pin (crankshaft journal) (fig. 5) for connecting rods of internal combustion engines and compressor. They provide excellent service in spite of rapid accelerations, elevated temperatures, unfavourable load, and poor lubrication conditions

For additional information about special sizes and designs, which are available on request, contact SKF.

Cages

SKF single row needle roller and cage assemblies are fitted with one of the cage designs shown in table 1.

Double row needle roller and cage assemblies have a double row cage (fig. 2) in the same design as a single row cage.

When used at high temperatures, some lubricants can have a detrimental effect on polyamide cages. For additional information about the suitability of cages, refer to Cages.

SKF logo