Cylindrical roller and raceway are linear contact bearings

The cylindrical roller and raceway are linear contact bearings. Large load capacity, mainly bearing radial load. The friction between the rolling body and the retaining edge of the ferrule is small, which is suitable for high-speed rotation.

According to whether the ferrule has a flange, there are Nu, NJ, NUP, N, NF and other single row bearings, and NNU, NN double row bearings.

The inner ring and outer ring of the bearing can be separated.

The inner ring and outer ring of cylindrical roller bearing without flange can move relative to the axial direction, so it can be used as free end bearing.

A cylindrical roller bearing with double ribs on one side of the inner ring or outer ring and single ribs on the other side of the ferrule can bear a certain degree of axial load in one direction.

Double row cylindrical roller bearing, with high rigidity to radial load, is mainly used for machine tool spindle.

Generally, steel plate stamping cage or copper alloy car cage is used. But some use polyamide shaped cages.

According to whether there is retaining edge of cylindrical roller bearing ring, it can be divided into the following shapes.

Nu type, N type, NNU type and NN type are suitable for free side bearing. NJ type and NF type can bear axial load in one direction to a certain extent. NH type and NUP type are used as fixed side bearings.

NH type cylindrical roller bearing is composed of NJ type cylindrical roller bearing and L-shaped retaining ring.

When installing the NUP bearing, please put the lettering side of the retaining ring outward.