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SAE J160_202505

Name: SAE J160_202505 PDF | Request Standard
SKU: eca1bd809c03

Thermal Swell, Growth, and Hot Compressibility of Brake Friction Materials and Noise Insulators

Standard by SAE International, 2025-05-27

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SAE J160_202505.PDFSecure PDF
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Language: English
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Language: English
License Type: Enterprise / Multi User
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About This Item

This document specifies a universal method of measuring the thickness change of friction materials to determine the effects of temperature. The test applies to both disc and drum-type linings commonly used in hydraulic and air brake systems for automotive or commercial vehicle applications. This document describes several methods for thermal swell and growth. Method A is where the friction material is in contact with a heated surface to simulate the heat input to the pad that occurs during actual usage. Method B uses an oven to heat the freestanding material and is an approximate procedure requiring less instrumentation. Method A is recommended for disc brake pad assemblies, noise insulators, or flat coupons, while Method B is recommended for curved drum brake linings. This document also describes how to test the warmed-up disc brake pads and noise insulators for hot compressibility using Method A. This revision recommends preconditioning per SAE J3281 to remove adsorbed moisture from the test specimen and specifies the procedure to measure hot compressibility for disc brake pads and noise insulators.

SKU: eca1bd809c03

Publication Date: 2025-05-27

Standard Status: latest

Publisher: SAE International

Document Type: Ground Vehicle Standard

Subject: Brake linings, , , , , , , ,

Official SAE: Doi link

This Version: J160_202505 (2025-05-27)
Previous Version: J160_201302 (2013-02-13)
Previous Version: J160_200110 (2001-10-04)
Previous Version: J160_197007 (1970-07-01)

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