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ISO 20120:2025

Lubricants — Determination of the coefficient of friction of synchronizer lubricated by manual transmission fluids (MTF) — High-frequency, linear-oscillation (SRV) test machine

May 1, 2025

General information

60.60     May 1, 2025

ISO

ISO/TC 28

International Standard

75.100  

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Scope

This document specifies a test method for determining the coefficient of friction and its evolution in mechanical transmission fluids tribologically interacting with materials used in synchronizers in manual transmission (MT) gears under high-frequency linear oscillation motion using the linear-oscillation (SRV) test machine. A flat areal contact geometry is applied.

Life cycle

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PUBLISHED
ISO 20120:2025
60.60 Standard published
May 1, 2025