What is the difference between industrial gear oil and vehicle gear oil?
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1. They are used in different situations. The former is used for lubricating the gearboxes of stationary industrial equipment, while the latter is used for lubricating the gearboxes in mobile vehicles. In other words, the latter operates in an environment where oil temperature varies greatly, and being a flow-type device, it has relatively high requirements regarding both high and low temperatures. Therefore, vehicle gear oils are divided into multi-stage and single-stage types. 2. Gears for vehicles with medium or high loads are generally hyperbolic gears, as they require higher load-bearing capacity compared to industrial gears, which are usually cylindrical or conical in shape. Therefore, the load-carrying capacity of gear oil for medium-load vehicles is equivalent to that of heavy-duty industrial gear oil. Therefore, gear oil with a moderate viscosity grade for medium-load applications can replace heavy-duty industrial gear oils; for example, 90 GL-4 or 85W/90 GL-4 can substitute for 220 CKD. 3. The viscosity grade of vehicle gear oil is classified according to the standards set by the Society of Automotive Engineers SAE, with the kinematic viscosity at 100°C being the value used for determination. Industrial gear oil is classified in accordance with the standards set by the International Organization for Standardization ISO, with its dynamic viscosity being measured at 40°C. Therefore, substitution requires conversion. 4. In terms of classification, ISO only specifies the classification symbol C for industrial gear oils; it does not provide any specific symbols for classifying vehicle gear oils. Our country uses API to classify GL-3, GL-4, and GL-5.
1. They are used in different situations. The former is used for lubricating the gearboxes of stationary industrial equipment, while the latter is used for lubricating the gearboxes in mobile vehicles. In other words, the latter operates in an environment where oil temperature varies greatly, and being a flow-type device, it has relatively high requirements regarding both high and low temperatures. Therefore, vehicle gear oils are divided into multi-stage and single-stage types. 2. Gears for vehicles with medium or high loads are generally hyperbolic gears, as they require higher load-bearing capacity compared to industrial gears, which are usually cylindrical or conical in shape. Therefore, the load-carrying capacity of gear oil for medium-load vehicles is equivalent to that of heavy-duty industrial gear oil. Therefore, gear oil with a moderate viscosity grade for medium-load applications can replace heavy-duty industrial gear oils; for example, 90 GL-4 or 85W/90 GL-4 can substitute for 220 CKD. 3. The viscosity grade of vehicle gear oil is classified according to the standards set by the Society of Automotive Engineers SAE, with the kinematic viscosity at 100°C being the value used for determination. Industrial gear oil is classified in accordance with the standards set by the International Organization for Standardization ISO, with its dynamic viscosity being measured at 40°C. Therefore, substitution requires conversion. 4. In terms of classification, ISO only specifies the classification symbol C for industrial gear oils; it does not provide any specific symbols for classifying vehicle gear oils. Our country uses API to classify GL-3, GL-4, and GL-5.