Link debuts RespondAir heavy-duty rear air suspension for fire and rescue applications
Link Manufacturing recently introducted its new RespondAir heavy-duty rear air suspension system. Developed specifically for fire and rescue vehicle applications, the company said RespondAir is the industry’s first non-torque-reactive suspension rated from 30,000- to 35,000-lb. capacities.
“Through extensive voice-of-customer research with fire departments and OEMs, we identified critical needs around maintenance, stability, and equipment protection,” Mark Molitor, senior product manager for Link, said. “RespondAir represents Link’s 26-plus-year commitment to those industry needs with a purpose-built solution that eliminates common pain points while delivering superior performance in emergency response situations.”
The RespondAir suspension’s non-torque-reactive design represents an advancement in stability and control. Unlike conventional torque-reactive suspensions that can cause unwanted chassis movement during braking and acceleration, RespondAir’s upper and lower control arm configuration minimizes axle movement and reduces stress on driveline components and vehicle occupants.
Link engineered the suspension with larger, more durable natural rubber bushings. The bushings' increased surface area reduces the stress the rubber experiences, diminishing maintenance requirements and extending service life. The elimination of U-bolt connections in favor of optimally engineered weld-on axle brackets further enhances long-term reliability. RespondAir suspensions are configured to integrate fully with Meritor/Dana axles.
See also: Product Spotlight: Suspensions & Steering
The suspension’s V-Rod configuration provides lateral stability and reduced tail swing, which is especially critical for aerial apparatus with extended overhangs. High-strength cast steel components and tubing construction ensure durability under extreme duty cycles.
RespondAir is engineered for both single axle (30k-35k) and tandem axle (60k-70k) configurations, making it suitable for aerial trucks, rescue pumpers, tankers, and other heavy-duty fire apparatus. The system integrates Link’s proven 500 Series height control valves, offering the highest flow rates available for optimal leveling performance. The air suspension system also features a rapid air-dump function that allows fire trucks to reduce their overall height, enabling access to older station houses with lower door clearances.
Link will back RespondAir with a warranty covering structural and wear components. The system will be available through OEM partners starting in late 2025.
All RespondAir suspensions are treated with Link’s Link-KOAT migratory self-healing metal treatment. This protective coating provides corrosion resistance and rust protection, even when surfaces are exposed to harsh de-icing chemicals, excessive road abrasion, and extreme-duty environments encountered in fire service operations.
