ISO 12167-2:2021 PDF

Name: ISO 12167-2:2021 — Plain bearings — Hydrostatic plain journal bearings with drainage grooves under steady-state conditions — Part 2: Characteristic values for the calculation of oil-lubricated plain journal bearings with drainage grooves
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Plain bearings — Hydrostatic plain journal bearings with drainage grooves under steady-state conditions — Part 2: Characteristic values for the calculation of oil-lubricated plain journal bearings with drainage grooves

Название (английский):

ISO 12167-2:2021

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 10
Дата публикации:: 10 февраля 2021 г.
Издание:: ISO IS 12167 edition 2 version 1
ICS:: 21.100.10

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Описание (английский):

This document specifies, in graphic form, characteristic values used in the calculation of oil-lubricated plain journal bearings with drainage grooves.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview - ISO 12167-2:2021 (Hydrostatic plain journal bearings, drainage grooves)

ISO 12167-2:2021 specifies characteristic values in graphic form used for the calculation and preliminary design of oil‑lubricated hydrostatic plain journal bearings with drainage grooves under steady‑state conditions. Published as Part 2 of the ISO 12167 series, this second edition complements ISO 12167‑1 by providing diagrams, Table 1 and Figures 1–13 that supply designers with standardised data for hydrostatic plain journal bearings, including load and power characteristics for bearings with recesses and grooves.

Key topics and technical requirements

Scope and basis: Values are intended for oil‑lubricated, hydrostatic plain journal bearings with drainage grooves; steady‑state, isothermal analysis is used as a first‑order approach (see Introduction).

Graphic characteristic values: Diagrams and Table 1 provide values such as load‑carrying capacity (F*), attitude angle (β), total power (Ptot), and minimum recess pressure (Pmin) for a range of geometry and operating parameters.

Typical parameters covered: Relative eccentricity (ε), land and recess dimensions (l/B, l/D, b/D), number of recesses (Z), resistance ratio (κ), speed‑dependent parameter (K), relative frictional pressure (π) and normalized pressure/load factors (P*, ξ). Table 1 lists characteristic values for an example “optimized bearing” parameter set (e.g., ε = 0.4; h = 40·C; α = 0; b/D = 0.05; P* = 2; l/B = 0.1; ξ = 1).

Design context: Values are to be used in calculations in accordance with ISO 12167‑1. Explanations of symbols and worked calculation examples are covered in Part 1.

Limitations: This part provides standardised characteristic values and diagrams; it does not replace detailed, modern numerical analyses (e.g., non‑isothermal, transient CFD/thermo‑hydrodynamic studies) when those are required.

Applications and who uses it

Bearing designers and mechanical engineers: For preliminary sizing, selection and optimization of hydrostatic plain journal bearings with drainage grooves.

Rotating equipment manufacturers: To standardise bearing design choices, estimate load capacity and power loss and ensure compatibility with ISO 12167‑1 calculation methods.

Tribologists and maintenance engineers: For assessment of recess geometry effects, expected attitude angles and minimum recess pressures under steady operation.

Industry sectors: Power generation, turbomachinery, heavy machinery, gearboxes and any application that uses oil‑lubricated hydrostatic plain bearings.

Related standards

ISO 12167‑1 - Calculation of oil‑lubricated plain journal bearings with drainage grooves (normative companion referenced throughout Part 2).

ISO 12167 series and work by ISO/TC 123 (Plain bearings) for broader plain bearing standards and calculation methods.

Keywords: ISO 12167-2, hydrostatic plain journal bearings, drainage grooves, characteristic values, oil‑lubricated bearings, bearing calculation, load‑carrying capacity, Ptot, eccentricity, bearing design.

ISO 12167-2:2021 PDF

Abstract

Похожие стандарты

Overview - ISO 12167-2:2021 (Hydrostatic plain journal bearings, drainage grooves)

Key topics and technical requirements

Applications and who uses it

Related standards

Технические детали

BS ISO 12167-2:2021

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