kscarbel2 Posted September 14, 2016 Share Posted September 14, 2016 Hendrickson Int'l Press Release / August 30, 2016 ZMD (Zero Maintenance Dampening) technology eliminates shock absorbers from the maintenance equation by integrating the damping function traditionally performed by the shock within the air spring itself. ZMD air springs exchange pressurized air between the bellows and the piston. This patented air spring provides uniform and consistant damping over the life of the air spring. Available as a premium option on select VANTRAAX and INTRAAX integrated air suspension models and standard on ULTRAA-K air slider systems. Related reading - http://www.hendrickson-intl.com/Trailer/Value-Added-Options/ZMD . Quote Link to comment https://www.bigmacktrucks.com/topic/46842-hendrickson-zero-maintenance-damping/ Share on other sites More sharing options...
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