Spherical plain bearings are ready-to-install bearing components that are considered plain bearings because they do not have a roller element for the transfer of forces and reduction of friction. The sliding contact is between the spherical inner ring and the also spherical outer ring bore.
This allows the relatively large contact surfaces to transmit very high forces at low rotational speeds, while the spherical shape compensates for misalignments or deflections. They also combine excellent vibration and noise properties and are relatively insensitive to impact loads.
Spherical plain bearings are therefore predominantly used in applications in which misalignments and slewing motions between shafts and housings have to be compensated.
The compact design of spherical plain bearings also facilitates assembly and does not make any particular requirements on the connecting structure.
They are available in visions with or without maintenance requirements, a variety of materials, sliding surface combinations and surface coatings.
The following main groups are distinguished:
- Radial spherical plain bearings
- Axial spherical plain bearings
- Angular spherical plain bearings
The E, G and W series, for instance, give the user a broad spectrum of standardised dimensions to choose from.
Joint heads are plain bearings in terms of functional principle, with a housing and a threaded shank.
These ready-to-install machine elements are available with a left-handed, right-handed or female thread.
Joint heads are available in visions with or without maintenance requirements, a variety of materials, sliding surface combinations and surface coatings.
The E and K series, for instance, give the user a broad spectrum of standardised dimensions to choose from.