• Categories:Maintenance knowledge
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• Origin:
• Time of issue:2023-08-05 09:46
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(Summary description)The length of time the motorcycle is used, the ambient temperature when it is used, etc., is different. Therefore, in order to adapt to the various climatic conditions of the motorcycle operation region, most shock absorbers absorb the shock and vibration energy through the flow damping force of oil, and convert it into the heat of the oil. Therefore, the damping force is closely related to the viscosity of the oil, and the viscosity of the oil changes with temperature. The following technical requirements are proposed for shock absorber oil: (1) The shock absorber oil must have good anti-rust and anti-wear effects; (2) The shock absorber oil in all the use of the motorcycle (including high-speed, full load and overload and other special cases), to as little vaporization loss as possible, that is, the so-called small vaporization performance; (3) When the shock absorber oil is in contact with the air, it must have anti-oxidation stability and anti-oil mixing stability, that is, the so-called good working stability; (4) The shock absorber oil used in China shall have a freezing point not lower than -40 ° C. That is to say, when the temperature drops to 0 ° C ~ -40 ° C in the cold winter, the oil should not lose fluidity; (5) Because the shock absorber oil containing impurities will soon scratch the piston rod or cause the edge of the oil seal to be damaged during the driving of the motorcycle, resulting in oil leakage. Therefore, the shock absorber oil must be kept absolutely clean; (6) The shock absorber oil should not only have good viscosivity and high viscosity index, but also have a low freezing point. When the ambient temperature changes or the temperature of the shock absorber oil itself changes with the extension of the working time, the viscosity of the oil should change very little. In summary, the viscosity of the shock absorber oil has a great impact on the performance of the shock absorber. If the oil is too viscous, the soft shock absorber will become hard, and if the oil is too thin, the hard shock absorber will become soft. In order to change the shock absorption performance of the shock absorber, the brand of the shock absorber oil can be replaced, but the amount of oil added must not be increased or decreased at will.