Are Solar Mount Axial Tracker Shock Absorbers corrosion-resistant?

Solar mount axial tracker systems are widely used in photovoltaic (PV) installations to optimize energy generation by adjusting the panels’ angles according to the sun’s position. A key component in these systems is the shock absorber, which helps reduce vibrations and mechanical stress on the tracking structure. One common question among engineers and project developers is: Are solar mount axial tracker shock absorbers corrosion-resistant? Understanding this is critical for ensuring long-term durability and reliability of solar installations.

1. The Role of Shock Absorbers
Shock absorbers in solar axial trackers serve multiple purposes:

Vibration Dampening: They reduce the mechanical stress caused by wind, snow, or uneven terrain.
Load Distribution: They help evenly transfer forces across the mounting structure, reducing wear on joints and bolts.
Longevity of Components: By mitigating excessive vibration and shock, they prolong the lifespan of the tracker system and the PV panels.
Since these components are exposed to outdoor environments, corrosion resistance is a critical factor for maintaining functionality.

2. Materials and Corrosion Resistance
High-quality shock absorbers are typically constructed from materials designed to withstand harsh environmental conditions:

Stainless Steel Components: Pistons, rods, and fasteners are often made from stainless steel, which is highly resistant to rust and oxidation.
Aluminum Alloys: Some housings and structural parts use anodized or coated aluminum to prevent corrosion while maintaining a lightweight design.
Protective Coatings: Powder coatings, galvanization, or specialized paints provide an additional barrier against moisture, salt, and UV exposure.
Seals and Rubber Components: High-quality rubber seals prevent water and dust ingress, protecting the internal hydraulic or pneumatic components from corrosion.
By combining these materials and coatings, modern solar mount axial tracker shock absorbers achieve excellent corrosion resistance, even in coastal or high-humidity areas.

3. Environmental Considerations
The level of corrosion resistance depends on the operating environment:

Coastal Areas: High salt content in the air can accelerate corrosion. Shock absorbers designed for these regions often use enhanced stainless steel grades and extra protective coatings.
Industrial or Polluted Environments: Exposure to acid rain or chemical pollutants requires robust corrosion protection and regular inspections.
Extreme Weather: High humidity, heavy rainfall, or snow can test the durability of shock absorbers; corrosion-resistant materials help ensure long-term performance.
Selecting the right shock absorber for the environmental conditions is essential to prevent premature failure.

4. Maintenance for Longevity
Even corrosion-resistant shock absorbers benefit from periodic maintenance:

Regular Inspection: Check for signs of rust, paint peeling, or seal wear.
Cleaning: Remove dirt, salt, or debris from exposed surfaces.
Lubrication: Apply appropriate grease or lubricant to moving parts to reduce friction and prevent moisture accumulation.
Prompt Repairs: Replace or repair damaged components to maintain corrosion resistance.
Routine maintenance further enhances durability, ensuring reliable operation for years.

5. Conclusion
So, are solar mount axial tracker shock absorbers corrosion-resistant? Yes, modern designs use stainless steel, anodized aluminum, protective coatings, and high-quality seals to resist corrosion in outdoor environments. When properly selected for the installation site and maintained regularly, these shock absorbers can withstand moisture, salt, and harsh weather conditions, ensuring long-term performance and reliability of the solar tracking system.

By prioritizing corrosion-resistant materials and design, solar project developers can reduce maintenance costs, prevent downtime, and extend the lifespan of both the shock absorbers and the entire PV system.