This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to describe the initial friction characteristics only of brake blocks (see SAEJ660@ Brake Linings) for use on commercial vehicles. NOTE: It is emphasized that this recommended practice does not establish friction requirements for brake blocks@ not does it designate other significant block characteristics which must also be considered in overall brake performance. The basis for determining the friction coefficients for brake blocks are tests conducted in accordance with SAE J661@ Brake Lining Quality Control Test Procedures.
SAE J866-1964 history
2019SAE J866-2019 Friction Coefficient Identification and Environmental Marking System for Brake Linings
2012SAE J866-2012 Friction Coefficient Identification and Environmental Marking System for Brake Linings
2002SAE J866-2002 Friction Coefficient Identification System for Brake Linings
1996SAE J866-1996 Friction Identification System for Brake Linings and Brake Blocks for Motor Vehicles
1985SAE J866-1985 Friction Coefficient Identification System for Brake Linings
1966SAE J866A-1966 Friction Identification System for Brake Linings and Brake Blocks for Motor Vehicles
1964SAE J866-1964 FRICTION IDENTIFICATION SYSTEM FOR BRAKE BLOCKS FOR COMMERCIAL VEHICLES