This SAE Recommended Practice covers equipment capabilities and the test procedure to quantify and qualify the shear strength between the friction material and backing plate or brake shoe for automotive applications. This SAE Recommended Practice is applicable to: bonded drum brake linings; integrally molded disc brake pads; disc brake pads and backing plate assemblies using mechanical retention systems (MRS); coupons from drum brake shoes or disc brake pad assemblies. The test and its results are also useful for short, semi-quantitative verification of the bonding and molding process. This Recommended Practice is applicable during product and process development, product verification and quality control. This Recommended Practice does not replicate or predict actual vehicle performance or part durability.
SAE J840-2007 Referenced Document
ISO 6312:2001 Road vehicles - Brake linings - Shear test procedure for disc brake pad and drum brake shoe assemblies
JIS D 4422:2007 Automotive parts -- Drum brake shoe assemblies and disc brake pad -- Shear test procedure
SAE J840-2007 history
2017SAE J840-2017 Test Procedures for Brake Shoe and Lining Adhesives and Bonds@ Recommended Practice (August 1982)
2007SAE J840-2007 Test Procedures for Shear Strength of Automotive Brake Pads and Brank Lining Assemblies
1998SAE J840-1998 Test Procedures for Brake Shoe and Lining Bonds
1982SAE J840-1982 Test Procedures for Brake Shoe and Lining Adhesives and Bonds@ Recommended Practice (August 1982)
1971SAE J840C-1971 TEST PROCEDURES FOR BRAKE SHOE AND LINING ADHESIVES AND BONDS
1968SAE J840B-1968 TEST PROCEDURES FOR BRAKE SHOE AND LINING ADHESIVES AND BONDS
1962SAE J840-1962 TEST PROCEDURES FOR BRAKE SHOE AND LINING ADHESIVES AND BONDS