Cylindrical Roller BearingsDesigns and Configurations
NACHI Cylindrical Roller Bearings are produced in a wide variety of designs and configurations.
NF
NUP NH NUH NN NNU
N NP NJ NU
Fig 1. Cylindrical Roller Bearing Configurations
Conventional Design
Cylindrical Roller Bearings of conventional design are available in 10 configurations as shown in Fig. 1.
Configurations N,NU,NN and NNU will not sustain axial loading. These configurations must be used as the float end bearing.
Configurations NF, NJ, NUH are designed with the capability of sustaining axial loading in one direction.
Configuration NUH is basically an NU bearing with the addition of a guide ring (an "L" ring).
The NUH dimensional data is the same as the NH bearing configuration.
Configuration NF, NJ, and NUH can sustain axial loading in one direction.
Configuration NH, NP, and NUP have bi-directional thrust load-carrying-capability.
The suffix of the bearing number indicates:
E : high capacity
G : polyamide cage
The bearing with polyamide cage should be used at less than 120ºC operating temperature.
NACHI Cylindrical Roller Bearings are produced in a wide variety of designs and configurations.
NF
NUP NH NUH NN NNU
N NP NJ NU
Fig 1. Cylindrical Roller Bearing Configurations
Conventional Design
Cylindrical Roller Bearings of conventional design are available in 10 configurations as shown in Fig. 1.
Configurations N,NU,NN and NNU will not sustain axial loading. These configurations must be used as the float end bearing.
Configurations NF, NJ, NUH are designed with the capability of sustaining axial loading in one direction.
Configuration NUH is basically an NU bearing with the addition of a guide ring (an "L" ring).
The NUH dimensional data is the same as the NH bearing configuration.
Configuration NF, NJ, and NUH can sustain axial loading in one direction.
Configuration NH, NP, and NUP have bi-directional thrust load-carrying-capability.
The suffix of the bearing number indicates:
E : high capacity
G : polyamide cage
The bearing with polyamide cage should be used at less than 120ºC operating temperature.