For expanded application capabilities, Hendrickson recently launched the Primaax EXTM system, an enhanced version of the Primaax heavy-duty, vocational truck air suspension. Primaax EX improves durability and performance while delivering a substantial weight savings alternative to competitive systems, report officials of Hendrickson Truck Systems Group.

Refinements in the Primaax EX system include enhanced joint integrity and durability, improved handling, increased air spring capacity, greater disc brake compatibility and improved resistance to torque rod bushing walk-out, the company added.

The Primaax EX system features cast austempered and shot-peened ductile iron support beams that integrate the attachment points for greater reliability.

Primaax EX geometry features a new frame hanger and torque rod configuration. This enhanced geometry provides increased roll stiffness and reduced roll steer for improved handling, Hendrickson said. In addition, suspension-induced driveline vibration is significantly reduced. Expanded offerings of the longitudinal torque rods help provide extended bushing life, ease of serviceability and improved compatibility to package with disc brakes.

Featuring improvements to the air spring piston shape and beam interface, the new Primaax EX air springs lift and support the load with less air pressure. Furthermore, packaging improvements help reduce potential damage to the air spring.

Primaax EX will be available at most major truck manufacturers in capacities ranging from 23,000 to 26,000 lbs. for single-axle, 46,000 to 52,000 lbs. for tandem-axle and 69,000 to 78,000 lbs. for tridem-axle applications.

For additional information, visit http://www.hendrickson-intl.com, or contact Hendrickson Truck Systems Group at 630-910-2800.