PRIMAAX EX Air Suspension Improves Durability for Vocational Truckers

Fri December 12, 2008 - National Edition
Construction Equipment Guide


For expanded application capabilities, Hendrickson recently launched the PRIMAAX EX 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.

Launched in 2003, the PRIMAAX air suspensions quickly gained the trust of heavy-duty truckers in a variety of vocational and construction applications including concrete mixers, dump trucks, heavy-haul tractors, refuse vehicles, truck-mounted cranes and logging trucks, according to the manufacturer.

The PRIMAAX EX system features cast austempered and shot-peened ductile iron support beams that integrate the attachment points for greater reliability. Hendrickson manufactures the beams and supplies them as an engineered sub-assembly to ensure control of product specifications for optimal performance and durability.

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. 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. (10,432 to 11,793 kg) for single-axle, 46,000 to 52,000 lbs. (20,865 to 23,587 kg) for tandem-axle and 69,000 to 78,000 lbs. (31,298 to 35,380 kg) for tridem-axle applications.

For more information, call 630-910-2800 or visit www.hendrickson-intl.com.




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