What oil does the excavator use? Comprehensive analysis of the selection guide for hydraulic oil and gear oil
Recently, hot topics in the field of construction machinery have focused on equipment maintenance and oil selection, especially the oil consumption of excavator traveling systems. This article will combine the hot content of the entire network in the past 10 days to conduct a structured analysis of the oil type, performance requirements and replacement cycle of the excavator traveling system to help users choose oil scientifically.
1. Core requirements of oil for excavator traveling system
The excavator traveling system mainly includes hydraulic motors, reduction gears and crawler drive devices. The oil used must meet the following requirements:
| part | Oil type | Functional requirements |
|---|---|---|
| hydraulic motor | Hydraulic oil (HM/HV) | Anti-wear, anti-oxidation, high and low temperature stability |
| reduction gear | Gear oil (GL-5) | Extreme pressure, anti-wear, anti-rust and anti-corrosion |
| Bearing/Chain | Grease (lithium grease) | Adhesion, water resistance |
2. Comparison of key indicators of hydraulic oil and gear oil
According to recent industry discussions, users need to focus on the following oil parameters:
| parameter | Hydraulic oil (HM 46) | Gear oil (80W-90) |
|---|---|---|
| Viscosity index | >100 | >90 |
| Flash point (℃) | >200 | >180 |
| Pour point (℃) | <-30 | <-20 |
| Anti-wear properties (FZG) | ≥Level 10 | ≥Level 12 |
3. Popular brand recommendations and user feedback
Combining e-commerce platform and forum data, the following brand oil products have received relatively high attention recently:
| brand | Hydraulic oil model | Gear oil model | User rating (5-point scale) |
|---|---|---|---|
| Shell | Shell Tellus S4 MX 46 | Spirax S6 GXME 80W-90 | 4.7 |
| Mobil | Mobil DTE 10 Excel 46 | Mobilube GX 80W-90 | 4.5 |
| Great Wall | L-HM 46 | GL-5 85W-90 | 4.3 |
4. Answers to frequently asked questions from users
Q1: Can gear oil be used instead of hydraulic oil?
Not recommended. The high viscosity of gear oil may cause the hydraulic system to overheat and respond slowly.
Q2: How to determine the oil replacement cycle?
General recommendations: Hydraulic oil should be replaced every 2000 hours, gear oil should be checked every 500 hours, and grease should be replenished every 50 hours.
5. Maintenance tips
1. Check the oil level and quality regularly, and replace it immediately if emulsification or impurities are found;
2. Avoid mixing oils of different brands;
3. In winter, low-temperature oil (such as HV 32 or 75W gear oil) is preferred.
Conclusion
The stable operation of the excavator traveling system is inseparable from the correct selection of oil. Through the structured data analysis of this article, we hope to help users scientifically select oil according to working conditions, seasons and equipment models, and extend the life of equipment. For further discussion, you can follow the recent hot topic on the construction machinery forum #excavator maintenance guide#.
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