The original Primaax system was launched in December 2001 followed by an enhanced version of the product, Primaax Ex in 2008, which was designed to increase roll stability and improve durability above the original Primaax’s severe-duty design for even more extreme environments and applications, the company says.
“Primaax Ex has revolutionized the severe-service industry by providing a highly durable, highly stable platform with all of the benefits of an air ride system,” says Doug Sanford, vice president and general manager of Hendrickson Truck Commercial Vehicle Systems. “Not only does Primaax Ex provide stability characteristics similar to a mechanical suspension, but the premium ride quality of the system also helps comfort the driver and protects expensive equipment from premature wear.”
“By changing the geometry of the system to a more optimized configuration, Primaax Ex was developed to achieve higher levels of roll stiffness compared to the original Primaax suspensions and over two times the roll stiffness of other industry air suspensions. This allows Primaax Ex to thrive in high center-of gravity applications where air suspensions had previously not been considered,” says Ashley Dudding, director of engineering for Hendrickson Truck Commercial Vehicle Systems. “In addition, numerous advancements were made to improve the durability of the system through modified designs, advanced materials and manufacturing processes,” Dudding says.
The Primaax Ex system is available for all major Class 8 truck OEMs in various offerings, Hendrickson says, including both drum and disc-brake configurations.
