Cylinder roller bearing

Cylindrical rollers and raceways are linear contact bearings. High load capacity, mainly bearing radial loads. The friction between the rolling element and the sleeve edge is small, suitable for high-speed rotation. According to the presence or absence of retaining edges in the ring, there are single row cylindrical roller bearings such as NU, NJ, NUP, N, NF, as well as double row cylindrical roller bearings such as NNU and NN. This bearing is a separable structure with inner and outer rings.

Cylindrical roller bearings with inner or outer rings without retaining edges, whose inner and outer rings can move relative to each other in the axial direction, can be used as free end bearings. A cylindrical roller bearing with double flanges on one side of the inner and outer rings and a single flange on the other side of the ring can withstand a certain degree of axial load in one direction. Generally, steel plate stamping retaining frames or copper alloy solid retaining frames are used. But there are also some that use polyamide formed retaining frames.

characteristic

1. The roller and raceway are in line contact or repaired to make line contact, with a large radial bearing capacity, suitable for bearing heavy loads and impact loads.

2. Low friction coefficient, suitable for high speed, with a maximum speed close to deep groove ball bearings.

3. N-type and NU types can move axially and adapt to changes in the relative position between the shaft and the housing caused by thermal expansion or installation errors. They can be used as free end supports.

4. The machining requirements for the shaft or seat hole are high, and the relative deviation of the outer ring axis after bearing installation should be strictly controlled to avoid contact stress concentration.

5. The inner or outer ring can be separated for easy installation and disassembly.