Angular contact thrust ball bearings
- Accommodate axial and radial loads
- High load carrying capacity
- High axial stiffness
- High-speed performance
Single direction angular contact thrust ball bearings
Single direction angular contact thrust ball bearings (fig. 1) are designed to accommodate axial loads in one direction only and therefore are adjusted against a second bearing or mounted as sets. In their main application area of rotary tables, two bearings are always used and adjusted against each other.
Double direction angular contact thrust ball bearings
Double direction angular contact thrust ball bearings consist of one housing washer, two shaft washers and two different-size ball and cage assemblies (fig. 2). The larger bearing half has a higher load carrying capacity. Double direction angular contact thrust ball bearings have a low height and can accommodate axial loads in both directions as well as moment loads. A single bearing can therefore be used to support rotating machine components relative to stationary components.
SKF angular contact thrust ball bearings, if not full complement, are fitted with a window-type machined brass cage (fig. 3), either shaft or housing washer centred.
Double direction bearings are equipped with two different-size cages.
The permissible operating temperature for angular contact thrust ball bearings can be limited by:
- the dimensional stability of the bearing washers and balls
- the cage(s)
- the lubricant
Where temperatures outside the permissible range are expected, contact the SKF application engineering service.
Bearing washers and balls
SKF angular contact thrust ball bearings are heat stabilized up to at least 150 °C (300 °F).
Brass cages can be used at the same operating temperatures as the bearing washers and balls.
For temperature limits of SKF greases, refer to SKF greases.
When using lubricants not supplied by SKF, temperature limits should be evaluated according to the SKF traffic light concept.
The designations of angular contact thrust ball bearings do not follow any ISO definition. They are identified by drawing numbers:
single direction bearings
- BDAB ..
double direction bearings
- BEAB ..