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  • July 10, 2026

Principles for selecting lubricating oil for reducers



1、 Choose based on the work environment:

Temperature: Environmental temperature is an important factor in selecting lubricating oil. For example, in an environment of -10 ° C to 15 ° C, it is recommended to use No. 68 gear oil; It is recommended to use 150 grade gear oil in an environment between 0 ° C and 30 ° C.

Speed: In high-speed environments (such as speeds above 100 revolutions per minute), it is recommended to use low viscosity oil; In low-speed environments (such as speeds below 100 revolutions per minute), it is recommended to use high viscosity oil (such as 100 or 220).

Select according to the type of gearbox:

Universal reducer: Usually uses 46 # gear oil, which has good anti-wear and anti-oxidation properties.

High temperature environment: It is recommended to use oil with a viscosity of 68 or higher to ensure thermal stability and sintering resistance.

Adverse environment: In high humidity and high salt spray environments, lubricating oil with anti rust and anti-corrosion properties should be selected,

2、 Common lubricating oil models

Gear oil model:

68 gear oil: suitable for low temperature environments and high-speed working conditions.

100 # gear oil: suitable for medium and low-speed working conditions.

150 # gear oil: suitable for medium to high temperature environments and high-speed working conditions.

220 gear oil: suitable for low-speed and high load conditions.

Lubricating grease model:

Lithium based grease: suitable for the inlet and outlet shaft seals of Flender reducers, with good high temperature resistance and sealing performance.

Fully synthetic sealing silicone grease or fluorosilicone grease: suitable for sealing needs in high-temperature environments.

Mining heavy-duty industrial gearbox

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