J2488_201907 SAE No. 2 Friction Test Machine 6000 rpm Stepped Power Test

Revised

07/24/2019

Features
Issuing Committee
Scope
Content
This SAE Recommended Practice is intended as the definition of a standard test, but may be subject to frequent change to keep pace with experience and technical advances. This should be kept in mind when considering its use.
The SAE No. 2 Friction Test Machine is used to evaluate the friction characteristics of automatic transmission plate clutches with automotive transmission fluids. It can also be used to conduct durability tests on wet friction systems.
The specific purpose of this document is to define a 6000 rpm stepped power test for the evaluation of wet friction system performance variation as a function of power level. This procedure uses an initial engagement speed of 6000 rpm and is intended as a standard procedure for common use by both suppliers and end users.
The only variables selected by the supplier or user of the friction system are:
  1. a
    Friction material
  2. b
    Fluid
  3. c
    Reaction plates
These three variables must be clearly identified when reporting the results of using this test. If any of the test parameters or system hardware as described in this document are changed, other than the friction material, test fluid, or reaction plates, the data may not be reported as having been obtained using this document.
This procedure is not intended to evaluate the initial coefficient or break-in characteristics. For this information, refer to SAE J2490 SAE No. 2 Friction Test Machine μPVT test.
Rationale
Content
Adjusted the separator plate thickness range.
Meta TagsDetails
DOI
https://doi.org/10.4271/J2488_201907
Pages
25
Citation
SAE International Recommended Practice, SAE No. 2 Friction Test Machine 6000 rpm Stepped Power Test, SAE Standard J2488_201907, Revised July 2019, Issued April 2000, https://doi.org/10.4271/J2488_201907.
Additional Details
Publisher
Published
Jul 24, 2019
Product Code
J2488_201907
Content Type
Recommended Practice
Status
Revised
Language
English