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 84.67

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
GSO 9:2022
 
Gulf Technical Regulation
Labeling of prepackaged food stuffs
BH GSO 9:2023
GSO 9:2022 
Bahraini Technical Regulation
Labeling of prepackaged food stuffs

Recently Published

ISO/IEC TR 23888-1:2026
 
International Standard
Information technology — Artificial intelligence for multimedia — Part 1: Vision and scenarios
ISO 8715-1:2026
 
International Standard
Electric road vehicles — Road operating characteristics — Part 1: Passenger cars and light duty vehicles
ISO 4306-1:2026
 
International Standard
Cranes — Vocabulary — Part 1: General
ISO 21316:2026
 
International Standard
Traditional Chinese medicine — Isatis indigotica root