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
USD
229.44
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
YSMO GSO 150-2:2020
GSO 150-2:2013
Yemeni Technical Regulation
Expiration dates for food products - Part 2 :
Voluntary expiration dates
GSO 9:2022
Gulf Technical Regulation
Labeling of prepackaged food stuffs
YSMO GSO 2055-1:2020
GSO 2055-1:2015
Yemeni Standard
HALAL FOOD - Part 1 : General Requirements
Recently Published
ISO/TR 13849-3:2026
International Standard
Safety of machinery — Safety-related parts of control systems — Part 3: Markov model-based PFH calculation
ISO/TS 23099:2026
International Standard
Large yachts — A methodologic framework to assess large yachts (30m+) on their environmental performance and credentials
ISO 11783-3:2026
International Standard
Tractors and machinery for agriculture and forestry — Serial control and communications data network — Part 3: Application layer, transport layer and network layer
ISO 13914:2026
International Standard
Soil, treated biowaste and sludge — Determination of dioxins and furans and dioxin-like polychlorinated biphenyls by gas chromatography with mass selective detection (high resolution mass spectrometry, HRMS, and tandem mass spectrometry, MS/MS)