D Series: Triple Convolution
The TEVEMA D Series Air Springs – Triple Convolution Models are advanced pneumatic actuators designed for exceptional vibration isolation, load leveling, and motion control. Featuring a triple convolution design, these air springs offer enhanced flexibility and an extended stroke range compared to single or double convolution models, making them ideal for demanding applications that require high performance and durability.
- Triple Convolution Design: Provides increased stroke length and enhanced flexibility, ensuring better load distribution and superior vibration isolation.
- Robust Construction: Manufactured using high-quality materials to withstand harsh industrial environments and demanding applications.
- Maintenance-Free Operation: Designed without internal moving parts, reducing maintenance requirements, minimizing downtime, and lowering operational costs.
- Versatile Integration: Compatible with various mounting configurations, allowing seamless incorporation into existing systems.
The D Series Triple Convolution Models have been specifically designed to meet the demands of industries requiring high-performance vibration isolation and precise load management solutions. They are ideal for applications in:
- Industrial Machinery: Used in presses, vibrating screens, and heavy equipment to minimize vibrations, reduce mechanical stress, and extend the service life of machinery.
- Automotive Industry: Integrated into the suspension systems of buses, trucks, and specialized vehicles, providing enhanced ride comfort, stability, and handling.
- Material Handling Equipment: Applied in conveyors, lifts, and actuators, where precise motion control and load leveling are critical to operational efficiency.
- Aerospace and Defense: Utilized in high-demand applications requiring effective vibration isolation, protecting sensitive equipment from excessive movement and external forces.
- Enhanced Performance: Increases operational efficiency by effectively isolating vibrations and absorbing shocks, providing over 99% vibration isolation.
- Increased Load Capacity: Capable of supporting substantial weights due to the triple convolution structure, with load capacities of up to 450 kN per bellow.
- Cost-Effective Solution: Reduces maintenance requirements and extends equipment service life due to its long-lasting rubber construction and absence of sliding sealing elements.
When evaluating TEVEMA’s D Series and F Series Triple Convolution Air Springs, it is crucial to understand the technical distinctions that make each series suitable for specific industrial applications. Below is a detailed technical comparison, highlighting the key differences between the D Series and F Series.
- D Series: Designed for standard load capacities, typically ranging from 1 to 20 tons, making them ideal for general industrial machinery and applications with moderate load requirements.
- F Series: Engineered to handle higher maximum loads, usually ranging from 5 to 50 tons, making them suitable for heavy-duty machinery and demanding industrial environments.
- D Series: Operates effectively at standard pressures, typically up to 6 bar (87 psi), sufficient for applications requiring moderate force and load support.
- F Series: Designed to function at higher nominal pressures, up to 8 bar (116 psi), allowing for greater force output and load support.
- D Series: Available with effective diameters ranging from 100 mm to 500 mm, suitable for applications that require moderate force.
- F Series: Features larger effective diameters from 200 mm to 700 mm, resulting in greater effective surface area for force transmission.
- D Series: Provides maximum stroke lengths up to 300 mm, adequate for applications with limited vertical displacement.
- F Series: Offers extended maximum stroke lengths up to 450 mm, accommodating greater vertical movement and increased flexibility.
- D Series: Has natural frequencies ranging from 2.5 to 4.0 Hz, suitable for applications where standard vibration isolation is acceptable.
- F Series: Exhibits lower natural frequencies between 1.0 and 2.5 Hz, enhancing vibration isolation performance, particularly for heavy loads and sensitive equipment.
- D Series: Manufactured with standard rubber compounds and reinforcement layers, providing reliable performance in typical industrial environments.
- F Series: Constructed with high-strength rubber compounds, reinforced with multiple layers of synthetic cords (e.g., nylon or aramid fibers), ensuring superior tensile strength and durability.
- D Series: Utilizes standard steel end closures and bead rings, suitable for applications with moderate stress levels and less aggressive environments.
- F Series: Equipped with heavy-duty steel bead rings and end closures, often treated with anti-corrosive coatings for enhanced longevity in harsh conditions.
- D Series: Suitable for standard temperature ranges from -30°C to +60°C (-22°F to +140°F).
- F Series: Capable of operating within a wider temperature range, from -50°C to +70°C (-58°F to +158°F), thanks to specialized rubber formulations.
- D Series: Allows for angular misalignments up to 8 degrees, sufficient for less demanding setups.
- F Series: Designed to accommodate greater angular misalignments up to 15 degrees, as well as lateral misalignments, due to its flexible construction.
- D Series: Standard burst pressure ratings are around 20 bar (290 psi), suitable for typical operating conditions.
- F Series: Higher burst pressure ratings exceeding 30 bar (435 psi), ensuring safety and reliability in extreme conditions.
- D Series: Suitable for static or low-frequency dynamic applications with less intense operational cycles.
- F Series: Optimized for high-frequency dynamic applications, particularly those involving rapid load changes, due to superior damping characteristics and enhanced material resilience.
- D Series: Offers a reliable fatigue life for applications with normal operating cycles, generally up to 500,000 cycles.
- F Series: Features an extended fatigue life exceeding 1 million cycles, attributed to enhanced materials and robust construction.
| Specification | D Series Triple Convolution | F Series Triple Convolution |
|---|---|---|
|
Maximum load capacity: |
1 – 20 tons |
5 – 50 tons
|
|
Operating pressure range: |
Up to 6 bar (87 psi) |
Up to 12 bar (174 psi) |
|
Effective diameter: |
100 mm – 500 mm |
200 mm – 700 mm
|
|
Maximum stroke length: |
Up to 300 mm |
Up to 450 mm |
|
Natural frequency: |
2.5 – 4.0 Hz |
1.0 – 2.5 Hz |
|
Temperature range: |
-40°C to +70°C (-40°F to +158°F) |
-50°C to +115°C (-58°F to +239°F) |
|
Material composition: |
Standard Rubber with Reinforcements |
High-Strength Rubber with Synthetic Cords
|
|
End Closure Material: |
Standard Steel |
Heavy-Duty Coated Steel |
|
Burst Pressure: |
~20 bar (290 psi) |
>30 bar (435 psi) (standard) / Up to 12 bar (174 psi) for high-strength versions |
|
Misalignment capability: |
Up to 8 degrees angular |
Up to 15 degrees angular |
|
Fatigue life: |
Up to 500,000 cycles |
>1 million cycles |
|
Dynamic applications: |
Moderately Suitable |
Highly suitable |
- Load and Pressure Handling: The D Series is suitable for moderate loads and standard operating pressures, making it ideal for general industrial applications. In contrast, the F Series is designed to handle higher loads and pressures, making it more suitable for demanding applications. The F Series also includes models with four-ply construction, allowing operation at pressures up to 12 bar, compared to the standard 8 bar for most air springs.
- Vibration Isolation: The D Series provides effective vibration isolation for standard frequencies. The F Series, however, offers superior isolation across a wider frequency range due to its lower natural frequencies, making it more effective for applications requiring high-performance vibration damping.
- Stroke and Flexibility: The D Series features adequate stroke lengths for applications with limited vertical movement, whereas the F Series accommodates greater movement and misalignments, thanks to its extended stroke length and flexibility.
- Material and Construction: The D Series is constructed with electro-galvanized steel as standard but can also be supplied in stainless steel (AISI-304 or AISI-316L) upon request, making it suitable for typical environments. The F Series includes crimped and bead ring designs, offering additional reinforcements for enhanced durability and performance under harsh conditions.
- Temperature and Environmental Resilience: The D Series operates effectively within standard temperature ranges, typically between -40°C to +70°C for NR/SBR rubber compounds. The F Series, however, is available with high-performance elastomers, including chlorobutyl, nitrile, EPDM, and chloroprene, enabling operation in extreme temperatures up to +115°C and more aggressive environments.
- Application Suitability: The D Series is ideal for general industrial machinery, conveyor systems, and equipment with moderate demands. The F Series is better suited for heavy-duty industries such as mining, construction, and automotive manufacturing, where robust performance and high-load capacity are required.
By focusing on these technical specifications, engineers and decision-makers can select the appropriate TEVEMA air spring model to meet the specific requirements of their application, ensuring optimal performance, safety, and cost-effectiveness.
Why Choose TEVEMA Air Springs?
TEVEMA is dedicated to delivering top-quality air spring solutions that meet the evolving demands of modern industries. Our commitment to innovation and excellence ensures that the D Series Triple Convolution Models provide reliable performance and long-term value.
For more information on the TEVEMA D Series Air Springs Triple Convolution Models and how they can enhance your operations, please contact our technical support team.