Cylindrical roller thrust bearings are suitable for arrangements that have to support heavy axial loads. Furthermore, they are relatively insensitive to shock loads, are very stiff and require little axial space. As standard they are available as single direction bearings and can only accommodate axial loads acting in one direction.
Cylindrical roller thrust bearings are simple in form and design and are produced in single row and double row designs. The bearings in the 811 and 812 series are mainly used where thrust ball bearings have insufficient load carrying capacity.
The cylindrical surface of the rollers is slightly relieved towards the ends. The resulting contact profile virtually eliminates damaging edge stresses. The bearings are of separable design; the individual components can be mounted separately.

Spherical roller thrust bearings can accommodate heavy thrust loads and, due to the raceways being inclined to the bearings axis, they can also accommodate radial loads up to a maximum of 55% of the thrust load and are suitable for taking high thrust loads at relatively high speed. Misalignment depends on the series. These bearings are fitted with asymmetrical barrel-shaped rollers. Lubrication of these bearings should be oil except in certain exceptional cases. It is also essential that a minimum of thrust load be present to avoid damage to the raceways by centrifugal forces. E Series roller thrust bearings are designed to sustain high mechanical loads. They accept very high axial loading, while featuring low susceptibility to shocks. However, radial loading must remain moderate. Admissible misalignment is to the order of 2° and rotating speed is low.
The high loads likely to be applied to these thrust bearings require oil lubrication (lubrication ports are provided). Grease lubrication can only be envisioned for low rotating speeds, under moderate loading.

Back