Tank Suspension System
MILITARY TANK SUSPENSION SYSTEM​
Unlike conventional vertical spring-damper configurations, the T-90 tank employs a compact rotary suspension system—utilizing lever-actuated rotary dampers to manage terrain-induced loads. This architecture introduces a strategic advantage in confined armored layouts by converting vertical wheel movement into controlled angular displacement.
At the core of this system lies a pivoting suspension arm connected to a sealed rotary damper. As the road wheel encounters elevation changes, the arm transmits rotational motion directly into the damper, where fluid resistance dissipates energy. This eliminates the need for bulky linear components while delivering robust damping, smoother ride dynamics, and increased structural integration across tracked platforms.
Working Principle
The rotary lever suspension system in armored vehicles, such as the T-90 tank, uses a mechanically actuated lever to transfer vertical wheel displacement into controlled rotary motion. This motion is directly applied to a rotary hydraulic damper—typically a vane or rotor-type unit—filled with a high-viscosity damping fluid sealed within a robust chamber.
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When the road wheel encounters a bump or obstacle, the suspension arm rotates about its pivot, transmitting torque into the rotary damper.
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The internal vanes within the damper displace fluid through calibrated orifices, converting kinetic energy into heat and thereby attenuating shock loads.
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As the terrain load subsides, the fluid flow and mechanical resistance help restore the arm to its neutral position, effectively stabilizing the vehicle.
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The damping behavior and energy dissipation characteristics are governed by fluid viscosity, vane geometry, and orifice configuration.
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This rotational approach allows damping to occur within a compact, low-profile unit, ideally suited for confined armored hulls.
Key Components
Suspension Mounting
Operational Fitment
Tank Suspension in Action
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Suspension Arm (Lever) – Transfers vertical wheel movement into rotational motion around a fixed pivot axis.
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Rotary Damper Unit – A sealed housing filled with high-viscosity fluid that resists arm rotation through internal vane or rotor mechanisms.
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Damping Fluid – Specially formulated hydraulic or silicone-based fluid that absorbs energy through shear and pressure resistance.
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Pivot Bearings and Seals – Ensure smooth arm articulation while preventing fluid leakage under battlefield conditions.
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Integrated Torsion Element (optional) – Provides a restoring torque to return the arm to its neutral position, functioning similarly to a torsion spring.
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