With more than 70% of U.S. fleets already transitioning to air suspensions, bulk transporters are increasingly turning to integrated designs to balance weight savings with the durability required for liquid and dry bulk operations. Hendrickson’s Intraax series, led by the AAT and AANT models, provides a single-source, fully integrated suspension, axle, and brake system specifically engineered for the rigorous demands of tankers and specialty trailers.

Optimizing payload for bulk haulers

For weight-conscious liquid tanker and grain hopper operations, the Intraax AANT 23K utilizes a tapered-beam design that reduces suspension weight by more than 35 lbs., according to Hendrickson. This system incorporates LDA Large-Diameter Axle technology to increase structural stiffness and payload potential while supporting improved tire wear and fuel economy compared to traditional 5-in. axles.

For heavy-duty and versatile applications, the Intraax AAT series offers a range of capacities, including 23,000, 25,000, and 30,000 lbs. per axle. These top-mount systems are designed for both on-highway and off-road tanker service, featuring a rigid trailing arm and solid axle connection that provides a stable platform to protect sensitive tank structures from road-induced vibration.

Maintenance and safety integration

The Intraax lineup includes several integrated features designed to reduce the total cost of ownership for bulk fleets:

• Precision alignment: The Quik-Align system allows for fast and easy axle realignment without the need for welding or specialized tools.
• Braking performance: Hendrickson’s standard Cam Tube System enhances S-cam alignment and extends component life, providing increased braking reserve and faster application cycles.
• Extended durability: The systems feature long-life Tri-Functional bushings and are backed by a 10-year/1,000,000-mile warranty on the axle-to-beam connection.
• Advanced damping: Fleets can opt for ZMD Zero Maintenance Damping technology, which eliminates conventional shock absorbers to further streamline maintenance schedules.

Supporting diverse fleet operations

While specialized for bulk hauling, Hendrickson’s integrated technology extends to operators with diverse trailer portfolios.

For those running dry van or refrigerated trailers alongside their tanker fleets, the Vantraax air slider system combines Intraax technology with a patented K2 slider box to resist racking and harsh loading. Additionally, the Ultraa-K tandem air slider offers a weight-optimized structure that is nearly 100 lbs. lighter than typical sliders, maximizing efficiency in van applications.

By engineering the suspension, axle, and brakes to work as a single, harmonious system, Hendrickson provides fleets with a single source for technical support, training, and comprehensive warranty coverage.