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How air bellows support machinery | Tevema

In agricultural systems, efficiency and durability are non-negotiable. That is why air bellows support machinery in increasingly essential ways. Their flexible structure, high load-bearing capacity, and resistance to harsh environmental factors make them a vital part of modern agricultural systems. Whether it’s isolating mechanical vibration, managing height adjustment, or reducing noise transmission, air bellows offer unmatched benefits in a wide variety of agricultural applications. Unlike rigid mechanical components, air bellows are capable of absorbing lateral misalignment and maintaining consistent performance under fluctuating loads. Their unique construction, combining reinforced elastomeric layers and metallic end closures, enables us to offer reliable solutions to challenges in agricultural automation, equipment stabilization, and machine longevity. With the correct pressure settings, these devices maintain a uniform operating height, crucial in field conditions where load shifts frequently. Each bellow can operate with pressures up to 8 bar or 12 bar with reinforced designs.

Benefits of air bellows in farming environments

The ability of air bellows to isolate vibrations up to 99% significantly reduces mechanical wear in agricultural machinery. This leads to extended service life for critical components such as plow systems, grain processing units, and hydraulic arms. Our bellows are built to handle forces up to 450 kN, offering dependable performance even in heavy-duty field operations. Models with diameters between 80 mm and 950 mm provide scalable solutions for different load requirements. Furthermore, their low natural frequency and high flexibility allow them to absorb angular motion and tolerate side loads up to 30 mm. These features are essential when machinery operates on uneven terrain. By integrating Tevema air bellows into agricultural platforms, we ensure not only equipment protection but also operator comfort and system stability. Their compact design allows for efficient use of space. They provide silent operation by reducing structure-borne noise in rough environments.

Resistance to extreme conditions

Agriculture exposes equipment to a broad range of extreme temperatures, abrasive dust, and chemical residues. Our air bellows are specifically designed to cope with these environmental stressors. Using natural rubber, chloroprene, and EPDM, we deliver elasticity, toughness, and long-term resistance. All compounds are tested for durability under -40 °C to +115 °C depending on the material. When required, we offer four-ply constructions for higher pressure resistance—up to 12 bar—while maintaining excellent stroke performance. This robustness makes them ideal for tasks involving hydraulic dampening, pneumatic lifting, or pressure-based positioning. Components such as galvanized or AISI-304 stainless steel end closures further reinforce the bellows against corrosive slurry, fertilizer chemicals, and cleaning agents used in agriculture. To ensure longevity, all units are manufactured following strict ISO 2230 storage and material guidelines. This attention to detail ensures that every air bellow performs reliably under field conditions.

Design flexibility for agricultural systems

Our product range supports single, double, and triple convolution bellows, allowing tailored implementation based on system requirements. Single convolution models offer excellent isolation with minimal installation height, while double and triple models extend the stroke range for applications needing higher actuation movement or load leveling. Available strokes range from 20 mm to over 300 mm, depending on configuration. The dismountable bead ring and crimped designs allow for easy integration with existing machinery. We support multiple thread sizes including G1/4″, G3/8″, and G3/4″, along with custom stud fittings for unique installation demands. Whether retrofitting older farm systems or developing new automation solutions, our modular air bellows deliver unmatched compatibility. Our bellows range from 80 mm to 950 mm in diameter, offering solutions for small-scale tasks as well as heavy-duty lifting and leveling functions. Each design maintains low internal friction.

Maintenance advantages and lifecycle savings

By using air bellows, agricultural machinery becomes practically maintenance-free in key load-bearing areas. The absence of sliding seals eliminates friction-based wear, while the resilient rubber material adapts dynamically to variable field conditions. This minimizes the need for routine maintenance, reducing both operational costs and machine downtime. Most bellows endure over one million cycles under standard operating conditions. Incorporating our bellows allows operators to bypass frequent lubrication cycles, simplifying maintenance routines across the farm. This is especially beneficial for remotely located machinery, where access is difficult. Because our designs function without metal-to-metal contact, they’re ideal for low-noise, low-maintenance operations. The extended lifecycle of these components, combined with fewer replacement intervals, results in total cost of ownership savings. We focus on building long-term relationships by offering solutions that maximize uptime and minimize overhead—qualities that are increasingly critical in today’s precision farming sector.

Precision in actuation and control

Air bellows support machinery not only by absorbing stress but also by offering precise control over movement. Their elasticity ensures consistent force output across the stroke, eliminating jerky motions. By adjusting internal pressure, we can fine-tune their actuation response to match equipment-specific needs. Stroke control tolerances range within ±5%, which is critical in automated tasks. This is crucial in tools like seed drills, sorting conveyors, and fertilizer spreaders, where controlled elevation and even material distribution are essential. The combination of low hysteresis and uniform stroke performance ensures reliable function across repetitive cycles. We optimize each unit’s performance through custom engineering, adapting the bellow geometry, wall thickness, and internal volume to meet precise operational goals. Our in-house simulations and load-displacement testing guarantee consistency from design to deployment. Whether working with a multi-axial suspension system or a vibratory grading unit, we ensure our bellows deliver precision.

Wide compatibility and material options

Tevema air bellows are compatible with all modern agricultural machinery platforms, including pneumatic tools, plowing machines, and vertical lifting systems. Our flexible configurations—available with aluminum, steel, or stainless steel end plates—allow for seamless integration. Material hardness values range from 55 to 70 Shore A, depending on the elastomer. We offer bellow materials such as nitrile for oil resistance, EPDM for ozone protection, and chlorobutyl for chemical shielding. These combinations ensure that our bellows operate reliably under UV exposure, organic compound contact, and temperature shifts. Our modular closures, including bead ring, threaded, and countersunk plates, make them fit-for-purpose in virtually any farming scenario. By offering a wide array of designs from D series and F series, we deliver customized performance in every project. This commitment to configurability, material science, and mechanical compatibility ensures reliability.

Performance and pressure management

Controlling internal pressure allows us to influence the height, stiffness, and load capacity of the air bellow during operation. With available ranges from 7 to 12 bar, our products are optimized for diverse farming applications—from field levelling to weight balancing on harvesters. Load curves remain stable even after 250,000 pressure cycles. Each bellows model is tested to withstand dynamic load cycles, which are common in row crop implements and soil conditioning tools. The four-ply high-strength variants further extend the safe operating range, providing high reliability even under continuous actuation. These features are particularly useful in precision-guided agricultural machinery, where timing and stroke repeatability are crucial. We monitor and test each product under real-world stress simulations to ensure our pressure-stroke curves remain consistent. This focus on quality control means customers can expect uniform behavior across the lifetime of the component.

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