ISO 12152:2012 PDF

Name: ISO 12152:2012 — Lubricants, industrial oils and related products — Determination of the foaming and air release properties of industrial gear oils using a spur gear test rig — Flender foam test procedure
SKU: ISO 12152:2012
Price: 25 EUR
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Lubricants, industrial oils and related products — Determination of the foaming and air release properties of industrial gear oils using a spur gear test rig — Flender foam test procedure

Название (английский):

ISO 12152:2012

Lubricants, industrial oils and related products — Determination of the foaming and air release properties of industrial gear oils using a spur gear test rig — Flender foam test procedure

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 14 августа 2012 г.
Издание:: ISO IS 12152 edition 1 version 1
ICS:: 75.100

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Описание (английский):

ISO 12152:2012 describes a test method based on a single-stage spur gear rig to determine the foaming properties of oils used for the lubrication of gears. This method is used for evaluating the foaming and air release properties of lubricating oils, in conditions close to real gearbox conditions.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 12152:2012 specifies the Flender foam test procedure - a standardized test method using a single-stage spur gear test rig to determine the foaming and air-release properties of industrial gear oils. The method reproduces conditions close to real gearbox operation (immersion of gears, controlled speed and temperature) to evaluate foam formation and oil-air dispersion that can negatively affect gearbox performance, including wind-turbine gearboxes.

Key topics and technical requirements

Test principle: Run a pair of spur gears in a sealed gearbox with ~1 L oil charge, then stop the drive and record volume increases caused by oil-air dispersion and surface foam over 90 minutes.

Test rig essentials: Sealed ~2 L housing, vertically arranged shafts with central gear set, front window with percentage scale (0% set at ~1 L at 25 ± 0.5 °C), heating system, oil filling/drain and air breather.

Operating conditions (specified):

Motor: ≥ 0.55 kW, 1 450 r/min ± 3 %
Test temperature: 25 ± 0.5 °C
Run time: 300 s ± 5 s (then observe foam after stopping)
Measurement: Record oil temperature and volume changes at defined intervals (after 5 min running time, and at multiple standing times up to 90 min)

Preparation and cleaning: Rig flushed with cleaning fluid (e.g., petroleum spirit conforming to ASTM D235), then with candidate oil; fill to 0% scale line before heating and testing.

Reporting and precision: Report to nearest 1% (exclude meniscus). Repeatability r = 5 % points; reproducibility R = 10 % points (based on round-robin data for typical gear oils).

Data handling: Distinguish and plot oil-air dispersion vs surface foam as percentage volume increase over time.

Applications and users

ISO 12152:2012 is intended for:

Lubricant formulators evaluating antifoaming and air-release performance during development.

Quality control and testing laboratories verifying gear oil properties against customer or OEM requirements.

Gearbox/OEM engineers, especially in industries relying on enclosed gear systems (e.g., wind turbines), to select suitable lubricants that minimize foam-related issues.

Research teams studying foam mechanisms under realistic gearbox conditions.

Practical benefits include better prediction of in-service foaming, informed selection of antifoam additives, and improved reliability of enclosed gear systems.

Related standards

ISO 6247 - foaming characteristics of lubricating oils (glassware tests)

ISO 12925-1 - lubricant specifications for enclosed gear systems

ISO 5725-2 - accuracy, repeatability and reproducibility methodology

ASTM D892 - foaming test methods for lubricating oils

ASTM D235 - specification for mineral spirits (example cleaning fluid)

Keywords: ISO 12152:2012, Flender foam test, spur gear test rig, gear oils, foaming, air release, lubricant testing, industrial gear oils, foam tester, gearbox testing.

ISO 12152:2012 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 6247:1998

Petroleum products — Determination of foaming characteristics of lubricating oils

ISO 12925-1:2018/Amd 1:2020

Lubricants, industrial oils and related products (class L) — Family C (gears) — Part 1: Specifications for lu…

SIST ISO 5725-2:2020

Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determina…