According to the existence of rib and thrust ring, the cylindrical roller bearing with conventional design has the following structure types.

See Figure 1.

N. Nu, NN and NNU bearings can not bear axial load and can only be used as floating end bearings.

NF, NJ and NUH bearings have the ability to bear one-way axial load. NH, NP and NUP bearings have the ability to be subjected to bidirectional axial load, so they can be fixed with seats.

As shown in Table 1, standard cylindrical roller bearings are made of pressed steel plate and turning brass. The turning brass is used for high speed turning.

The basic load rating recorded in the dimension table is based on the cage in Table 1. When the same bearing code has different cages, the number of rollers may be changed, which is different from the value recorded in the table of rated load size.

The bearing suffix code indicates high load capacity and polyamide cage.

Polyamide cage

Table 2 shows the tolerance between the inner circle diameter FW and the circumcircle diameter ew of the interchangeable bearing.

Please use polyamide cage under 120 ° C.