The following is an article compiled based on recent hot topics and user concerns in the field of construction machinery. The title is "What kind of oil should be added to the rotary motor of the excavator?" The content contains structured data and detailed instructions:
What kind of oil should be added to the rotary motor of the excavator - professional guide and hot spot analysis
Recently, hot topics in the field of construction machinery have focused on equipment maintenance, oil selection and troubleshooting. Among them, "What kind of oil should be added to the rotary motor of the excavator?" has become one of the keywords with increased search volume. This article will give you detailed answers based on industry data and operating specifications.

1. Oil standards for rotating motors
As the core component of the excavator's swing mechanism, the rotary motor requires the use of a specific type of hydraulic oil. The following are common standards:
| Oil type | Applicable temperature | ISO viscosity grade | Replacement cycle |
|---|---|---|---|
| Anti-wear hydraulic oil (HM) | -10℃~40℃ | VG46 | 2000 hours/year |
| Low temperature hydraulic oil (HV) | -30℃~10℃ | VG32 | 1000 hours |
| Multigrade hydraulic oil (HS) | -40℃~50℃ | VG68 | 2500 hours |
2. Ranking of recent popular oil brands
According to e-commerce platform and repair shop survey data (September 2023), the brands with the highest attention from users are as follows:
| brand | market share | Average price (yuan/18L) | User praise rate |
|---|---|---|---|
| Shell | 32% | 580-650 | 94% |
| Mobil | 28% | 620-700 | 93% |
| Great Wall (Sinopec) | 18% | 450-500 | 89% |
3. Operation precautions
1.Oil quantity control:Add oil to 2/3 of the observation window. Excessive oil may cause damage to the seal.
2.Oil change steps:Drain the oil from the hot engine → clean the oil tank → replace the filter element → add new oil
3.Mixing taboos:Hydraulic oils of different brands/models cannot be mixed, as sediments are likely to occur.
4. Recent relevant hot events
1. A certain brand of excavators suffered batch failures in their swing motors due to the use of inferior hydraulic oil (reported on September 5)
2. After the implementation of National VI emission standards, the environmental performance requirements of hydraulic oil have increased (policy hotspot)
3. E-commerce platform "Construction Machinery Skin Care Products Festival" promotion event (September 10-20)
5. Expert advice
1. Prioritize oil products recommended by the original manufacturer. Replacing them yourself during the warranty period may affect the warranty.
2. In extreme working conditions (mines, high-cold areas), the oil change cycle should be shortened by 30%-50%
3. When storing oil, make sure it is sealed and moisture-proof. It is recommended to use it within 6 months after opening.
Through the above structured data and analysis, we hope to help you choose the correct oil for rotating motors. If you need more detailed technical parameters, it is recommended to consult the equipment's "Operation and Maintenance Manual" or contact the manufacturer's after-sales service.
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