The lubrication system of construction machinery needs to address the following challenges:
1. Mechanical violence: Excavators/pile drivers > 10g impact vibration. Cranes have 200% instantaneous overload, with the risk of oil film rupture.
2. Multiple sources of pollution:
- Dust (> 500mg/m³) → Abrasive wear*
- Mud water infiltration → Failure of grease emulsification
- Chemical corrosion → Aging of seals
3. Extreme temperature variations:
- Asphalt paving > 150℃ → Grease carbonization
- Cold regions operation < -30℃ → Loss of fluidity
4. Maintenance shortcomings**: High-altitude/narrow-space manual operations are dangerous, and equipment movement and transfer cause lubrication interruptions
