ISO 12131‑3 is the third part of the multi-series of International Standards applicable to the plain bearings on hydrodynamic plain thrust pad bearings under steady-state conditions.
ISO 12131‑3 specifies guide values for avoiding damage to thrust-pad bearings in service.
Note: The explanation of the symbols, as well as examples for calculation, are given in ISO 12131‑1.
ISO 12131‑3 on guide values for the calculation of thrust pad bearings is relevant to:
Plain bearings are used for sliding, rotating, oscillating or reciprocating motion. Plain bearings support and guide moving components inside the engine. In this regard, hydrodynamic plain thrust pad bearings are components that can take high axial loads of shafts in rotating machinery.
ISO 12131‑3 contains guide values according to which the calculation result is to be oriented in order to ensure optimal functioning of the plain bearings.
For limiting cases at high specific loads and/or high rotational frequencies, more accurate calculations are required, taking into account thermal, elastic, hydrodynamic, and/or turbulence effects.
The guide values provided by ISO 12131-3 represent limiting values in the tribological system plain bearing unit which are dependent on geometry and technology. These are empirical values which give sufficient reliability in operation even when subjected to slight disturbing influences.
As the buyer of ISO 12131‑3, you will be able to ensure optimal operational efficiency of the specific application, while being able to accurately account for outside disturbing influences like spurious forces, deviations from the ideal geometry, contamination of lubricants, corrosion and electric erosion. Ultimately, ISO 12131-3 can be your one-stop guide for design, optimisation and product development needs.
ISO 12131-3