Aluminum vs. Plastic Bearing Housings: Which Performs Better?
Choosing the right bearing housing material is key to optimizing cost, durability, and performance in solar tracker systems. This article compares two common types: aluminum housings and plastic (polymer) housings.
Introduction – Features of GF Bearings
Aluminum bearing
- High mechanical strength
- Durability Excellent
- Thermal Conductivity
- Superior UV and Weather Resistance
- Maintenance-Free
- ±10° Swing angle
- Environmental Adaptability
- Lightweight
- Lower cost
- Minimize structural height
Why Aluminum Housing Are Better Than Nylon Housing?
Better Mechanical Strength
- Aluminum housings offer significantly higher load-bearing capacity and resistance to deformation, especially under high temperatures where nylon may soften or lose strength.
Superior Durability
- Offer better resistance to wear, impact, and long-term fatigue, especially in harsh environments.
Test Results Comparison
Push Out Test Aluminum Housing > Nylon Housing
Screw Tightening Test Aluminum Housing > Nylon Housing
Crushing Test Aluminum Housing > Nylon Housing
Compress Test Aluminum Housing > Nylon Housing
More Tests on Aluminum Housing Bearings
- Salt Spray Test
Pre-test After 480 Hours Salt Spray Test
- Durability Test
1.5 minutes per cycle, 10000N Load, 19200 cycles, equals to 26 years for tracker with night stow function.
Conclusion
Aluminum housings offer superior strength, UV resistance, and thermal performance, making them the better choice for demanding environments and long-term durability. Plastic housings, on the other hand, provide a cost-effective and lightweight solution for less demanding applications.
When selecting a bearing housing, consider not only the upfront cost, but also the long-term performance, installation environment, and structural requirements of your solar tra
cking project.