Industrial Bellows Actuator WBZ 320-E Weforma Double Convoluted Air Spring G3/4 Air Hole
Product Description
A Double Convoluted Air Spring is a type of pneumatic suspension component featuring two bellows (convolutions) for enhanced load-bearing capacity and flexibility. Commonly used in heavy-duty vehicles, industrial machinery, and railway systems, it adjusts air pressure to accommodate varying loads while maintaining optimal height. Its dual-convolution structure allows greater travel and damping efficiency, reducing wear and fatigue. This design ensures durability, adaptability, and consistent performance under dynamic conditions, making it ideal for applications requiring robust suspension solutions.
Model: Double Convoluted Air Spring
Model Number: WBZ 320-E
Maximum extended height: 270mm
Minimum compressed height: 77mm
Stroke: 193mm
Top cover diameter: 141mm
Air hole: G3/4
Threaded holes: 2xM8x15
Distance between threaded holes: 70mm
Distance between threaded holes and air holes: 35mm
Bottom cover diameter: 141mm
Maximum outer diameter: 218mm
| Vibration isolation - dynamic characteristic values |
| Pressure P | bar | 3 | 4 | 5 | 6 | 7 | 8 | Vol V(I) |
| Force(Load) | KN | 4.6 | 6.2 | 7.8 | 9.4 | 11.1 | 12.7 | 4.1 |
| Spring Rate C | N/cm | 650 | 840 | 1030 | 1200 | 1390 | 1541 |
| Natural Frequenz f0 | Hz | 1.9 | 1.8 | 1.8 | 1.8 | 1.8 | 1.7 |
Pneumatic application - static characteristic values
Forcr F (kN) |
| Pressure P | bar | 3 | 4 | 5 | 6 | 7 | 8 | Vol V(I) |
| height H(mm) | 200 | 4.7 | 6.2 | 7.9 | 9.6 | 11.2 | 12.9 | 4.1 |
| 160 | 5.8 | 7.8 | 9.8 | 11.9 | 13.9 | 15.8 | 3.4 |
| 120 | 6.8 | 9 | 11.3 | 13.7 | 16 | 18 | 2.6 |
| 80 | 7.3 | 9.7 | 12.1 | 14.7 | 17.1 | 19.5 | 1.7 |
Maintaining Industrial Air Springs
1. Regular Inspection
Appearance Inspection:
- Inspect the air spring surface for cracks, wear, bulges, or scratches, especially at wrinkles and seams.
- Inspect metal parts (such as end caps and pistons) for rust or deformation.
Connections:
- Ensure that there are no leaks in the air pipes and joints (use soapy water to check for bubbles).
- Tighten bolts, flanges, and other fasteners to prevent loosening.
2. Cleaning and Maintenance
Removing Dirt:
- Regularly clean dust, oil, or chemical residue from the air spring surface with a soft cloth or brush (avoid using corrosive cleaners).
Corrosion Prevention:
- Metal parts can be coated with rust-inhibiting oil, especially in humid or corrosive environments.
3. Air Pressure Management
Pressure Monitoring:
- Use a pressure gauge to check that the operating air pressure is within the rated range (refer to the product manual).
- Avoid operating at over- or under-pressure, as this will accelerate aging and affect performance.
Leak Test:
- After inflation, allow the spring to rest for a period of time to observe whether the pressure drops too quickly.
4. Lubrication and Maintenance
Moving Parts:
- Apply silicone-based lubricant to pistons and sliding parts (to prevent petroleum-based grease from corroding rubber).
Seals:
- Inspect seals for deterioration and replace if necessary.
5. Load and Operating Environment
Avoid Overloading:
- Ensure that the load does not exceed the design limit, as this may cause the airbag to deform or rupture.
Environmental Control:
- Keep away from high-temperature sources, ozone (such as near motors), and sharp objects.
- If used in extreme temperature or chemical environments, select a more weather-resistant material (such as a fluoroelastomer airbag).
Product Drawing
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Industrial Bellows Actuator WBZ 320-E Weforma Double Convoluted Air Spring G3/4 Air Hole Images
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