Rotary bearings
Rotary bearings are large-sized bearings that provide rotation between component parts in large-scale structures. These bearings are used on wind turbines, solar trackers, cranes and excavators, machining plants, rail cars, tunnel machines, etc.
Among the different types of slewing rings IRAUNDI produces are four-point angular contact ball bearings (single or double row), crossed roller bearings and three-row roller bearings.
The main components of a support ring are:
- inner ring (a),
- outer ring (b),
- rolling elements (c),
- spacer rings (d),
- mounting bolt holes (f)
- and seals (g)
- to protect the raceways (h)
- and to retain the grease previously introduced through the hole (i) inside the bearing.
- The bearing may have teeth (e) on the inner or outer ring for meshing with the rotary drive.
Also, the gear teeth may not be present when the drive system is operated by a mechanism other than a gear train.