The new Dana Spicer RS 40 SmartRide trailer suspension from Dana’s Commercial Vehicle Systems group is now in production. Along with its RS 46 running mate, the RS 40 is available at all major dry van and reefer trailer OEMs.

The suspensions were designed with what Dana calls proprietary “shape
optimization” and computer analysis software, which resulted in roughly 60 lb of
weight savings. This design technology is said to allow optimized strength and
reliability as well.

Uniquely, the axles feature 5-3/4-inch-diameter axle tubes, but company engineers were still able to reduce weight compared to traditional 5-inch
axles. The larger diameter decreases deflection by 15%, Dana says, to reduce tire wear and improve fuel economy.

The company also notes that its Dana Spicer TIMS (Tire Inflation and Monitor
System) is now available as a stand-alone product or integrated with Bendix
TABS-6 trailer ABS. It features a two-solenoid manifold design that allows for non-pressurized seals and lines when not inflating tires. It’s available for factory and off-line installation on all makes and models of trailers. Call 800-826-4357.

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