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
219.96 USD

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
YSMO GSO 2055-1:2020
GSO 2055-1:2015 
Yemeni Standard
HALAL FOOD - Part 1 : General Requirements
GSO 2055-1:2015
 
Gulf Technical Regulation
HALAL FOOD - Part 1 : General Requirements

Recently Published

ISO 32662-1:2025
 
International Standard
Liquid petroleum products — Determination of total contamination — Part 1: Middle distillates and diesel fuels
ISO 32662-2:2025
 
International Standard
Liquid petroleum products — Determination of total contamination — Part 2: Fatty acid methyl esters
ISO 6563:2025
 
International Standard
Rear load carrier for wheeled vehicles — Requirements and test methods
ISO 18674-7:2025
 
International Standard
Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation — Part 7: Measurement of strains: Strain gauges