ISO 31657-1:2025
International Standard
Current Edition
·
Approved on
16 October 2025
Plain bearings — Hydrodynamic plain journal bearings under steady-state conditions — Part 1: Calculation of multi-lobed and tilting pad journal bearings
ISO 31657-1:2025 Files
English
38 Pages
Current Edition
BHD
86.73
ISO 31657-1:2025 Scope
This document specifies the general principles, assumptions and preconditions for the calculation of multi-lobed and tilting-pad journal bearings by means of an easy-to-use calculation procedure based on numerous simplifying assumptions.
The calculation method applies to the design and optimisation of plain bearings, for example in turbines, compressors, generators, electric motors, gears and pumps. It is restricted to steady-state operation, i.e. in continuous operating states the load according to size and direction and the angular velocity of the rotor are constant.
Best Sellers
GSO 150-2:2013
Gulf Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
BH GSO 150-2:2015
GSO 150-2:2013
Bahraini Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
BH GSO 9:2023
GSO 9:2022
Bahraini Technical Regulation
Labeling of prepackaged food stuffs
GSO 9:2022
Gulf Technical Regulation
Labeling of prepackaged food stuffs
Recently Published
ISO 10583:2026
International Standard
Aerospace fluid systems — Test methods for fitting on tube assemblies
IEC 81346-14:2026
International Standard
Industrial systems, installations and equipment and industrial products — Structuring principles and reference designations — Part 14: Manufacturing and processing systems
ISO 18379-1:2026
International Standard
Railway infrastructure — Ballastless track — Part 1: General requirements
ISO 8810:2026
International Standard
Plastics — Determination of residual peroxide — Gas chromatography method