The rolling body of the cylindrical roller bearing is the
centripetal rolling bearing of the cylindrical roller bearing. The
internal structure of cylindrical roller bearing is arranged in
parallel with rollers, and spacer or spacer block is installed
between rollers, which can prevent the inclination of rollers or
the friction between rollers and effectively prevent the increase
of rotary torque.
Cylindrical roller and raceway are linear contact bearings. Large
load capacity, mainly bear radial load. The rolling body has little
friction with the rim of the ring and is suitable for high-speed
rotation. According to whether the ring has flanges, it can be
divided into NU, NJ, NUP, N, NF and other single-row cylindrical
roller bearings, and NNU, NN and other double-row cylindrical
roller bearings. The bearing is a detachable structure with inner
ring and outer ring.
Cylindrical roller bearings with inner ring or outer ring without
flanging, the inner ring and outer ring can move relative to the
axis, so they can be used as free-end bearings. One side of the
inner ring and outer ring has double stops, and the other side of
the ring has a single stop cylindrical roller bearing, which can
bear a certain degree of axial load in one direction. Steel plate
cage or solid cage made of copper alloy is generally used. But some
parts use polyamide forming retainers.