GB/T 17477-2012
ActiveAutomotive gear lubricant viscosity classification
汽车齿轮润滑剂黏度分类
Application Summary AI generated
This standard specifies the viscosity classification system for automotive gear lubricants, defining grades such as 75W, 80W, 85W, 90, 140, and 250 based on kinematic viscosity at 100°C and low-temperature apparent viscosity. It is applied in the automotive industry for selecting and specifying gear oils for manual transmissions, differentials, and drive axles in passenger cars and commercial vehicles. The classification ensures proper lubricant performance under varying temperature conditions, aiding engineers and procurement professionals in matching lubricants to vehicle operating requirements.
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GB/T 12579-2002
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GB/T 2433-2001
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GB/T 7631.15-1998
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GB/T 7631.14-1998
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