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Plain Bearings




Angular Contact Spherical Plain Bearings
Angular Contact Spherical Plain Bearings :

Angular contact spherical plain bearings have sphered sliding surfaces on the inner and in the outer ring which are arranged at an angle to the bearing axis. They are therefore particularly suitable for carrying combined (radial and axial) loads. A single angular contact spherical plain bearing can only accept axial loads acting in one direction. Under radial loads, a force acting in the axial direction is produced in the bearing which must always be opposed by an equal force acting in the opposite direction. Therefore, the bearings are usually adjusted against a second bearing. If two angular contact spherical plain bearings are arranged so that their sphere centres coincide, a spherical plain bearing is obtained which can accommodate heavy radial loads as well as heavy axial loads in both directions.

 

Thrust Spherical Plain Bearings
Thrust Spherical Plain Bearings :

Thrust spherical plain bearings resemble angular contact spherical plain bearings in that they have sliding contact surfaces in the shaft and housing washers which are arranged at an angle to the bearing axis. However, they are primarily intended for axial loads although they can accommodate combined loads to a certain extent. The radial load component should, however, not exceed 50% of the simultaneously acting axial load. SKF thrust spherical plain bearings are produced as standard with the sliding contact surface combination steel/FRP and are maintenance-free. To enhance protection against corrosion as well as sealing it is, however, in many applications, advisable to fill the space surrounding the bearing during mounting with a rust inhibiting lithium base grease of consistency 2 or 3. Such an initial lubrication will also extend the service life of the bearing.