CYLINDRICAL ROLLER BEARINGS
Cylindrical roller bearings are manufactured in single and double row formats. Typically these are designed with a cage comprising solid inner and outer rings together with cylindrical rollers. The outer rings have rigid ribs on both sides (or can be produced without ribs depending on the application), while the inner rings have one or two rigid ribs. The cage prevents the cylindrical rollers coming into contact with each other during rolling.
Cylindrical roller bearings are suitable when:
- Bearing arrangements are subjected to high radial loads.
- Whereby high axial loads in conjunction with radial loads from one or both directions must be supported.
- Axial displacements of the shaft relative to the housing must be compensated without constraint in the bearing.
- Bearings should be repairable for easier mounting.
There are a number of basic design variations.
The outer ring has 2 rigid ribs while the inner ring has no ribs. This design allows axial displacements of the shaft relative to the housing in both directions and within certain limits.
The inner ring has 2 rigid ribs while the outer ring has no ribs. Again this design allows for axial displacements as per the NU
The outer ring has 2 rigid ribs where the inner ring has 1 rigid rib. In this design axial displacements are possible in one direction only.
The outer ring has 2 rigid ribs, while the inner ring has 1 rigid rib and one loose washer on the opposite side to the rib on the inner ring. Generally axial displacements between the shaft and housing are not possible as these type of bearings are generally used as a fixed locating bearing.