As a SKF bearing distributor, Nodes bearing supplies SKF needle roller and cage assemblies in single row and double row designs.
Single row: K..TN, K series
Double row: K..ZWTN, K..ZW
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. These bearings are characterized by: a simple and rugged design; accurate guidance of the rollers in the cage pockets; good running performance.
SKF needle roller and cage assemblies 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.
Tolerances
SKF needle roller and cage assemblies contain rollers of one gauge of grade G2 (ISO 3096:1996 Grade 2). The tolerance of each gauge is 2 um. The deviation from the nominal dimensions of the needle rollers is printed on the package.
| Gauge type | Gauge |
| − | μm |
| Standard gauges | 0/−2 |
| −1/−3 | |
| −2/−4 | |
| −3/−5 | |
| −4/−6 | |
| −5/−7 |
Operational clearance
The radial operaional clearance of bearing arrangements incorporating needle roller and cage assemblies is determined by:
- the gauge of the needle rollers
- the shaft and housing raceway tolerances
- the operating temperature
Suitable raceway tolerance classes are listed in table belw.
| Shaft |
Housing/shaft tolerance classes for operating clearance |
|||
| Nominal diameter | ||||
| > | ≤ | lower side | medium | higher side |
| mm | – | |||
| – | 80 | G6/j5 | G6/h5 | G6/g6 |
| H6/h5 | H6/g5 | H6/f6 | ||
| 80 | 120 | G6/h5 | G6/g5 | G6/f6 |
| 120 | – | G6/h5 | G6/g5 | G6/f6 |
| – | H6/f5 | H6/e6 | ||
related articles
- Abutment dimensions for SKF needle roller and cage assemblie
- SKF needle roller bearings supplementary designations
Related numbers
SKF K20x26x17 bearings
26mm x 20mm x 17mm
SKF K20x26x20 bearings
26mm x 20mm x 20mm
SKF K25x33x24 bearings
33mm x 25mm x 24mm
SKF K30x35x17 bearings
35mm x 30mm x 17mm
