Image Above: Diagram of a drop axle vs. a straight axle, shown from the front.
The Low-Down on Drop Axles
Drop axles are similar to standard spring axles, but the spindles at the end of the tube bend up. This puts the hub higher up, generally lowering the axle closer to the ground by 4 inches center-to-center. This allows the trailer to sit lower to the ground. Lower deck height means easier loading and unloading. This is mainly used for enclosed trailers and applications like car haulers or low-deck trailers, where low ground clearance loading is needed.
Order your Drop axles from HSI Duratek. Fill out the form here. In the form, select a ‘4” drop’ in the axle configuration section.