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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

Standard Details

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.

General Information

Status : Published
Standard Type: Main
Document No: ISO 20120:2025
Document Year: 2025
Pages: 15
Edition: 1
  • Section Volume:
  • ISO/TC 28. Petroleum and related products, fuels and lubricants from natural or synthetic sources
  • ICS:
  • 75.100 Lubricants, industrial oils and related products

Life Cycle

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ISO 20120:2025
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