Cylindrical rollers and raceways are linear contact bearings. Load capacity, mainly bear radial load. The friction between the rolling element and the retaining edge of the ring is small, which is suitable for high-speed rotation. According to whether the ring has ribs, it can be divided into single row cylindrical roller bearings such as NU, NJ, NUP, N, NF, and double row cylindrical roller bearings such as NNU and NN. The bearing has a separable inner ring and outer ring structure.
Cylindrical roller bearings with no ribs on the inner ring or outer ring, the inner ring and outer ring can move relative to the axial direction, so it can be used as a free end bearing. Cylindrical roller bearings with double ribs on one side of the inner ring and outer ring and a single rib on the other side of the ring can bear a certain degree of axial load in one direction. Generally, stamping steel cages or solid cages made of copper alloy cars are used. But there is also a part of the use of polyamide forming cage.
Feature Editing Broadcast
1. The roller and the raceway are in line contact or repaired offline contact, with large radial bearing capacity, suitable for bearing heavy loads and impact loads.
2. The friction coefficient is small, suitable for high speed, and the limit speed is close to the
Deep Groove Ball Bearing.
3. The N type and NU type can move axially, can adapt to the change of the relative position of the shaft and the housing caused by thermal expansion or installation error, and can be used as a free end support.
4. The processing requirements for the shaft or the seat hole are relatively high, and the relative deflection of the outer ring axis after the bearing is installed must be strictly controlled to avoid contact stress concentration.
5. The inner ring or outer ring can be separated for easy installation and disassembly [1].
Product feature editing broadcast
The cylindrical roller is in line contact with the raceway, and the radial load capacity is large. It is not only suitable for bearing heavy load and impact load, but also suitable for high-speed rotation.
The raceways and rolling elements of cylindrical roller bearings are geometrically shaped. After the improved design, it has a higher load-bearing capacity. The new structural design of ribs and roller end faces not only improves the axial load-bearing capacity of the bearing, but also improves the lubrication conditions of the contact area between the roller end face and the rib. The performance of the bearing.
Structure editing
Bearing structure type
Bearing structure type
1. Type N0000 without ribs on the outer ring and type NU0000 without ribs on the inner ring. Cylindrical roller bearings. This type of
Cylindrical Roller Bearing can accept larger radial loads, have a high limit speed, and does not restrict the axial displacement of the shaft or housing, and cannot accept the axial direction. Load.
2. NJ0000 and NF0000 cylindrical roller bearings with ribs on the inner and outer rings can restrain the axial displacement of the shaft or housing in one direction, and can accept small unidirectional axial loads. NU0000+HJ0000, NJ0000+HJ0000 and NUP0000 bearings can restrain the axial displacement of the shaft or housing in the axial clearance area of the imported bearings, and can accept small bidirectional axial loads
