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Stub-Axle Air Ride

Posted: April 6, 2016

Ridewell Suspensions has expanded its air-ride suspension line with an integrated stub-axle suspension system for heavy-haul applications. The RAR-251 contains two beam assemblies that can be integrated with a 32-inch-track Ridewell axle configured with Wabco PAN 19 disc brake assemblies.

The pivot design and “excellent” lateral stiffness of the RAR-251 suspension provides a significant increase in capacity for trailer manufacturers wanting a multi-tire configuration that provides a 40,000-lb capacity per axle line, says Ridewell. It’s also said to offer a better ride quality for trailer owners seeking an alternative to mechanical trunnion suspensions.

The initial release of the RAR-251 system is designed for a minimum 10-ft wide trailer up to a 14-ft or wider installation. It accommodates 225-70R 19.5 and 245-70R 19.5 tire sizes at a 12-in. ride height. Purchasers can use their own hangers or Ridewell can provide a hanger specifically designed for their application.

Additional configurations include a 12.25-in. drum brake assembly for 17.5-in. wheels and another with disc brakes to accommodate a 22.5-in. wheel.


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