To select appropriate seals, several factors have to be considered, including:
- the permissible angle of tilt
- the available space
- environmental conditions
- the effectiveness of the seal
- the type of lubricant and the frequency of relubrication
- the justifiable cost
Depending on the application, one or more of the above factors outweigh the others. It is therefore not possible to establish general rules for seal design.
Most SKF radial spherical plain bearing series are available with integral seals. Standard sealed bearings can increase the service life of the bearings and save space, while reducing inventory and assembly costs. Design characteristics and suitability of the RS seals and the LS heavy-duty seals are provided in table 1.