SX7

Seven Axle Side Dump Trailer Find dealers closest to your location. The SX7 is the industry's first 7-axle side dump trailer. The SX7's design allows operators with a standard CDL to haul up to 40 tons in a single trailer with easier maneuverability and less upfront cost than doubles or a train set. Cylinders are positioned at each end of the tub, rather than in the middle. This allows us to adjust the tub’s position on the frame, optimizing load distribution across the trailer. This flexibility is key to achieving the maximum load capacity. This cylinder design also makes the SX series more durable than other side dump trailers on the market. The SX7 can comfortably offer a 40-ton hauling capacity in a single trailer without exceeding 129,000 GVW rating with the right truck configuration. SmithCo offers custom bridge law drawings to help you choose the right setup for your needs. Specs shown are for 49’ frame length; other configurations available. 8’ 7” at Tub side, 9’ 7” at Center 1/4" Thick, AR450 Steel (or equivalent) 3/16" Thick, AR450 Steel (or equivalent) is optional External Column Supports, No Center Tub Divider Push Bar Type, Bolt-On Air Ride Suspension Standard (4) 13.2K Air Ride/Lift/Steerable Steel Disc, 8.25 X 22.5 (12), 9 X 22.5 on Steerable/lift (8) 11 R 22.5 G Radial Tires on Mains 295/75 R 22.5 on Steerable/lift Polyurethane, any combination of gray, white or black Special colors available upon request