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Media/Events > Press Releases > Hendrickson Introduces Shockless Air Suspension

Hendrickson Introduces Shockless Air Suspension

Release date: 3/21/2013

For Immediate Release

For more information contact:

Mark D. Slingluff
(330) 489-0050

Hendrickson’s introduces industry’s first “shockless” air suspension with launch of ZERO-MAINTENANCE DAMPING™ (ZMD™) ride technology

CANTON, OH. (March 2013) – Hendrickson Trailer Commercial Vehicle Systems takes low maintenance suspension systems to the next level with the launch of its latest innovation, Zero-Maintenance Damping (ZMD™) ride technology, available exclusively through Hendrickson beginning Q1 2013.

“Our new Zero-Maintenance Damping air springs take the hassles of a common suspension wear item – the shock absorber – out of the maintenance equation entirely,” remarks Perry Bahr, Vice President at Hendrickson Trailer Commercial Vehicle Systems. “We are excited and proud to unveil this one-of-a-kind technology that makes ‘shockless’ air suspension systems a reality” adds Bahr.

Available on select VANTRAAX™ integrated air slider models, ZMD technology provides reduced maintenance by eliminating the shock absorbers. Robust chain down-stops replace the rebound limiter function traditionally performed by the shock absorber.

In addition to reducing the risks associated with roadside inspections and CSA violations, these heavy-duty down-stops provide maximum durability, which translates to maintenance savings over the life of the trailer. Moreover, the robust down-stops provide reliable protection for trailers being loaded onto rail freight cars.

An additional benefit of Zero-Maintenance Damping air springs is enhanced ride quality. ZMD air springs integrate the damping function traditionally performed by the shock within the air spring itself by exchanging pressurized air through channels interconnecting the bellows and piston of this patent-pending air spring. Unlike a shock absorber, whose damping capacity is finite and deteriorates with age, ZMD air springs provide continuous damping at a consistent rate over the life of the air spring, increasing trailer component life.

Hendrickson’s state-of-the-art research and development testing, combined with real-world road conditions, has shown that ZMD achieves superior suspension damping, which translates to unmatched ride quality, driver comfort and cargo protection.

For additional information on Zero-Maintenance Damping air springs contact Hendrickson Trailer Commercial Vehicle Systems in Canton, Ohio, toll free at 866-RIDEAIR (743-3247).

Hendrickson, a Boler company, is a leading global manufacturer and supplier of medium- and heavy-duty mechanical, elastomeric and air suspensions; integrated and non-integrated axle systems; auxiliary lift axle systems; parabolic and multi-leaf springs; and bumper and trim components to the global commercial transportation industry. Hendrickson, based in Itasca, Ill., USA, continues to meet the needs of the transportation industry after 100 years. Visit the Hendrickson website at