F Series: Single Convolution

Product overviewTEVEMA F Series Air Springs Single Convolution Models

The TEVEMA F Series Air Springs Single Convolution Models are high-performance pneumatic actuators designed for industrial applications requiring efficient vibration isolation, load support, and precise motion control. Featuring a single convolution design, these air springs provide exceptional flexibility and durability, making them ideal for environments where reliability and longevity are essential. The F Series air bellows are available with crimped and bead ring closures, ensuring secure mounting and long-term performance in demanding conditions.

General Characteristics, Actuator Capabilities, and Isolator Properties

SINGLE CONVOLUTION
General Characteristics As Actuator As Isolator
Ø M AX. [mm]
Min. HEIGHT [mm]
Bead plate closure Bead ring closure
Stroke [mm]
Force at 7 bar [kN]
Design HEIGHT [mm]
Natural FREQUENCY AT 6 BAR [HZ]
Type a [mm] b [mm] Type a [mm] BOLT Ð Min. HEIGHT Max. HEIGHT
140 53 1 44.5 35 7.5 2.7 76 3.95
142 53 1 44.5 37 8.8 3.5 76 3.92
165 51 1 44.5 51 9 5 90 3.02
160 53 1 44.5 52 10 6.2 90 2.98
195 53 1 44.5 77 12.5 5.1 114 2.7
200 53 1 44.5 77 13 7.5 120 2.6
200 51 4 118 M8(x6) 77 13 7.5 118 2.6
220 53 1 70 4 135 M8(x6) 72 16 8 115 2.72
TV-30 G3/4″
TV-30 w/Socket Head Bead Rings
TV-30 w/Coutersunk Bead Rings
225 53 1 70 4 135 M8(x6) 82 17 8 120 2.68
TV-30-E G3/4″
TV-30-E w/Socket Head Bead Rings
TV-30-E w/Coutersunk Bead Rings
260 53 2 89 44.5 4 160.3 M8(x8) 77 21 12 114 2.77
TV-35 G3/4″
TV-35 w/Socket Head Bead Rings
TV-35 w/Coutersunk Bead Rings
244 53 2 89 44.5 4 160.3 M8(x8) 77 20.5 11 116 2.71
TV-35-E G3/4″
TV-35-E w/Socket Head Bead Rings
TV-35-E w/Coutersunk Bead Rings
343 53 2 157.5 73 4 228.6 M8(x12) 97 44 18 140 2.6
TV-40 G3/4″
TV-40 w/Socket Head Bead Rings
TV-40 w/Coutersunk Bead Rings

General Characteristics, Actuator Capabilities, and Isolator Properties

SINGLE CONVOLUTION General Characteristics As Actuator As Isolator
Ø MAX. [mm] Min. HEIGHT [mm] Bead plate closure Bead ring closure Stroke [mm] Force at 7 bar [kN] Design HEIGHT [mm] Natural FREQUENCY AT 6 BAR [HZ]
Type a [mm] b [mm] Type a [mm] BOLT Nº Min. HEIGHT Max. HEIGHT
310 53 2 157.5 73 4 228.6 M8(x12) 87 40 20 125 2.6
TV-40-E G3/4″
TV-40-E w/Socket Head Bead Rings
TV-40-E w/Coutersunk Bead Rings
315 60 4 182 M8(x12) 92 29 15 130 2.6
378 53 3 158.8 4 287.3 M8(x12) 94 68 28 127 2.5
TV-45 G3/4″
TV-45 w/Socket Head Bead Rings
TV-45 w/Coutersunk Bead Rings
404 53 3 158.8 4 287.3 M8(x12) 116 65 38 140 2.3
TV-45-E G3/4″
TV-45-E w/Socket Head Bead Rings
TV-45-E w/Coutersunk Bead Rings
420 53 4 350.8 M10(x18) 107 66 40 125 2.18
TV-48 w/Coutersunk Bead Rings
515 53 4 419.1 M10(x24) 89 120 75 125 2.37
TV-60-1 w/Socket Head Bead Rings
575 53 4 482.6 M10(x24) 107 150 98 125 2.22
TV-118-1 w/Socket Head Bead Rings
TV-118-1 w/Coutersunk Bead Rings
707 53 4 597 M10(x32) 132 240 150 150 2.07
TV-130-1 w/Socket Head Bead Rings
950 65 4 830 M10(x40) 120 452 300 140 2
TV-140-1 w/Socket Head Bead Rings

Key Features

  • Single Convolution Design: Offers superior flexibility and accommodates a high degree of angular misalignment.
  • High Load Capacity: Engineered to support substantial weights, making it suitable for heavy-duty machinery and equipment.
  • Efficient Vibration Isolation: Effectively reduces vibrations and shock loads, enhancing equipment performance and lifespan. ORIA air bellows can achieve over 99% vibration isolation​.
  • Durable Construction: Manufactured with robust materials, including high-quality elastomers and steel, to withstand harsh industrial conditions and continuous operation​.
  • Maintenance-Free Operation: Designed for long-term use without the need for frequent maintenance or servicing, due to the absence of sliding sealing elements​.

Specific Applications

The TEVEMA F Series Single Convolution Air Springs are specifically developed for applications that require:

  • Heavy Load Support: Ideal for presses, stamping machines, and heavy conveyor systems where significant weight support is necessary.
  • Precision Motion Control: Suitable for pneumatic actuation in lifting equipment, hoists, and positioning systems requiring smooth and controlled movement.
  • Vibration and Shock Isolation: Provides effective isolation of vibrations in industrial machinery, protecting sensitive equipment from external shocks, with a vibration isolation efficiency exceeding 99%.
  • Durability in Harsh Environments: Designed to perform reliably in demanding industries such as mining, construction, and industrial machinery applications. The air bellows are available in different elastomer compounds, ensuring resistance to oils, chemicals, and extreme temperatures.

Ideal forIdeal Industries

Manufacturing and Production

Enhances machinery performance and longevity by reducing vibration and providing reliable load support.

Mining and Construction

Supports heavy equipment operation with effective shock absorption and vibration isolation.

Automotive and Transportation

Used in heavy-duty vehicle suspension systems to improve ride comfort and handling.

Aerospace and Defense

Ensures reliable performance in critical applications where equipment failure is not an option.

Difference Between F Series and D Series Single Convolution Models

When comparing TEVEMA’s D Series and F Series Single Convolution Air Springs, several technical specifications differentiate the two, making each series optimal for specific industrial applications. Below is a detailed technical comparison focusing on the single convolution models.

1. Load Capacity (Maximum Load):

  • F Series: Designed to handle higher maximum loads, typically ranging from 2 to 20 tons, making them suitable for supporting heavier machinery and equipment in demanding industrial environments.
  • D Series: Suited for moderate loads, with maximum load capacities generally ranging from 0.5 to 10 tons, ideal for standard industrial applications.

2. Operating Pressure Range:

  • F Series: Capable of operating at higher nominal pressures, up to 8 bar (116 psi). The higher pressure capacity allows for greater force output and load support.
  • D Series: Operates effectively at standard pressures, typically up to 6 bar (87 psi), sufficient for applications with moderate force requirements.

3. Effective Diameter and Area:

  • F Series: Features larger effective diameters, ranging from 140 mm to 950 mm, resulting in a greater effective area for force transmission.
  • D Series: Comes with smaller effective diameters, ranging from 80 mm to 580 mm, suitable for applications needing less force.

4. Stroke Length (Maximum Usable Stroke):

  • F Series: Offers extended maximum stroke lengths, potentially up to 350 mm, accommodating greater vertical movement and flexibility.
  • D Series: Provides shorter maximum stroke lengths, up to 300 mm, adequate for applications with limited vertical displacement.

5. Natural Frequency and Spring Rate:

  • F Series: Exhibits lower natural frequencies (e.g., 2.0 to 3.95 Hz), enhancing vibration isolation capabilities, especially for heavy loads and sensitive equipment.
  • D Series: Has higher natural frequencies (e.g., 1.21 to 4.6 Hz), suitable for applications where less vibration isolation is acceptable.

6. Material Composition:

  • F Series: Constructed with high-strength rubber compounds reinforced with multiple layers of synthetic cords (e.g., nylon or aramid fibers), providing superior tensile strength and durability.
  • D Series: Made with standard rubber compounds and fewer reinforcement layers, offering reliable performance for typical industrial environments.

7. End Closure Design:

  • F Series: Equipped with bead ring closures and crimped closures, which ensure strong attachment to mounting components and enhanced durability.
  • D Series: Utilizes dismountable bead ring closures, allowing easier maintenance and replacement.

8. Temperature Range:

  • F Series: Capable of operating in a wider temperature range, from -50°C to +70°C (-58°F to +158°F), due to specialized rubber formulations.
  • D Series: Suitable for standard temperature ranges, typically from -40°C to +70°C (-40°F to +158°F).

9. Maximum Allowable Misalignment:

  • F Series: Designed to accommodate greater angular misalignments up to 12 degrees and lateral misalignments up to 30 mm due to their flexible construction.
  • D Series: Allows for standard angular misalignments up to 8 degrees, appropriate for less demanding setups.

10. Burst Pressure:

  • F Series: Higher burst pressure ratings, often exceeding 30 bar (435 psi), ensuring safety and reliability under extreme conditions.
  • D Series: Standard burst pressure ratings around 20 bar (290 psi), adequate for typical operating conditions.

11. Dynamic Capabilities:

  • F Series: Better suited for high-frequency dynamic applications involving rapid load changes, due to superior damping characteristics and material resilience.
  • D Series: Suitable for static or low-frequency dynamic applications with less intense operational cycles.

12. Fatigue Life:

  • F Series: Offers an extended fatigue life exceeding 1 million cycles, thanks to enhanced materials and robust construction, making them ideal for continuous operation.
  • D Series: Provides reliable fatigue life for applications with normal operating cycles, generally up to 500,000 cycles.

Technical Data Comparison Table

Specification F Series Single Convolution D Series Single Convolution
Maximum load capacity:
Up to 450 kN (~45 tons)
Up to 380 kN (~38 tons)
Operating pressure range:
Up to 8 bar (116 psi)
Up to 6 bar (87 psi)
Effective diameter:
80 mm – 950 mm
80 mm – 700 mm
Maximum stroke length:
Up to 375 mm
Up to 310 mm
Natural frequency:
1.5 – 3.0 Hz
3.0 – 5.0 Hz
Temperature range:
-40°C to +70°C (-40°F to +158°F)
-30°C to +60°C (-22°F to +140°F)
Material composition:
Natural/SBR Rubber with Reinforcements
Premium Chlorobutyl/Nitrile with Enhanced Reinforcements
End Closure Material:
Electro-Galvanized Steel (Stainless Steel Optional)
Standard Steel
Burst Pressure:
>30 bar (435 psi)
~20 bar (290 psi)
Misalignment capability:
Up to 25 degrees angular
Up to 12 degrees angular
Fatigue life:
>1 million cycles
Up to 500,000 cycles
Dynamic applications:
Highly Suitable
Moderately Suitable

Summary of Technical Differences

  • Higher Load and Pressure Handling: The F Series Single Convolution models can support heavier loads and operate at higher pressures due to their reinforced construction and advanced materials. The four-ply version offers increased pressure capacity, reaching up to 12 bar, compared to the standard 8 bar.
  • Enhanced Vibration Isolation: With lower natural frequencies and spring rates, the F Series provides superior vibration isolation. This is essential for protecting sensitive equipment and enhancing operator comfort in heavy machinery. The F Series air springs can absorb more than 99% of unwanted vibrations, ensuring effective noise and shock reduction.
  • Greater Flexibility and Stroke Length: The F Series accommodates larger movements and misalignments, making it suitable for applications with significant structural or load-induced displacements. These air bellows can handle lateral misalignments up to 30 mm and angular tilts up to 25°.
  • Material and Construction: The F Series uses high-quality elastomer compounds such as NR/SBR, NBR, EPDM, CIIR, and CR, offering excellent resistance to oil, ozone, and extreme environmental conditions. Additionally, metallic components can be supplied in AISI-304 or AISI-316L stainless steel for applications requiring high wear and corrosion resistance.
  • Temperature Resilience: The F Series air bellows operate effectively in extreme temperatures, ranging from -40°C to +115°C, depending on the elastomer compound used. This ensures their applicability in harsh environments, such as high-temperature industrial machinery and outdoor conditions.
  • Dynamic Performance: The F Series features enhanced damping characteristics, making it ideal for applications involving rapid load changes and high-frequency vibrations. These properties improve operational stability and reduce mechanical stress on machinery.

  • Application Suitability: Due to these technical advantages, the F Series is better suited for heavy-duty, high-performance applications in industries such as mining, construction, automotive manufacturing, and heavy machinery. Meanwhile, the D Series remains an excellent choice for standard industrial applications with moderate demands, offering reliable performance at a cost-effective level.

Conclusion

By focusing on these technical specifications, engineers and decision-makers can select the appropriate air spring model that meets the precise demands of their application, ensuring optimal performance, safety, and longevity.

Note: For detailed technical data and model-specific information, please refer to TEVEMA’s official technical datasheets or contact their technical support team.

For further inquiries or to discuss how TEVEMA F Series Air Springs Single Convolution Models can meet your specific application needs, please contact our technical support team.