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
OMR
90.0
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
OS GSO 150-2:2013
GSO 150-2:2013
Omani Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
OS GSO 2055-1:2015
GSO 2055-1:2015
Omani Standard
HALAL FOOD - Part 1 : General Requirements
GSO 2055-1:2015
Gulf Technical Regulation
HALAL FOOD - Part 1 : General Requirements
Recently Published
ISO 10360-102:2026
International Standard
Geometrical product specifications (GPS) — Acceptance and reverification tests for coordinate measuring systems (CMS) — Part 102: Grammar of symbols for metrological characteristics and their specifications
ISO 6426-2:2026
International Standard
Horological vocabulary — Part 2: Technical and commercial definitions
ISO 21590:2026
International Standard
Traditional Chinese medicine — Crocus sativus stigma
ISO 17387:2026
International Standard
Intelligent transport systems — Lane change decision aid systems (LCDAS) — Performance requirements and test procedures