This standard specifies the terms, codes, product classifications, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, etc. for trapezoidal gears used in mini-car gasoline engines. This standard applies to trapezoidal toothed synchronous belts (hereinafter referred to as synchronous belts) for mini-car gasoline engines.
HBm 65.13-1988 history
1988HBm 65.13-1988 Micro car gasoline engine timing belt