This Dynapac D.ONE is a used walk-behind compactor — sometimes referred to as a trench roller — offered from Iowa, USA, at $51,790. Walk-behind compactors of this type are purpose-built for compacting soil and backfill material in confined spaces such as utility trenches, where larger ride-on equipment cannot operate. Dynapac is a well-established manufacturer of road construction and compaction equipment, producing a broad range of rollers, pavers, and compactors for civil engineering, utility, and infrastructure applications worldwide. This 2023 machine is in used condition.
The D.ONE is equipped with padded drums measuring 20.5 inches in diameter and 33.5 inches in width, making it suited to trench compaction work where padfoot-style contact improves results in cohesive soils. Operating weight is 3,516 lb, and the machine delivers 16,200 lb of centrifugal force through its vibratory system. Power comes from a 12.8 hp Kohler diesel engine paired with a 63-gallon fuel tank, and drive is handled by a two-speed hydrostatic system. Roller extensions are included with the machine.
The D.ONE operates via radio remote control, which allows the operator to manage all machine functions — including engine start and stop — from outside the trench. This eliminates the need to descend into shored excavations to intervene, improving both efficiency and operator safety. The radio system is described as weather-resistant and functional in conditions involving extreme sunlight.
Compaction performance is supported by a directed oscillator technology fitted to both the front and rear drums, offering a choice of high and low amplitude vibration settings. An Automatic Vibration Control (AVC) system regulates travel speed and vibration output automatically to optimise compaction results in cohesive material. The detachable drum extensions noted above allow the machine to be adapted for tighter working widths without requiring a separate piece of equipment, and a smooth drum attachment option is referenced for specialist applications.
Additional features noted by the seller include an ECO mode that reduces engine speed to manage fuel consumption, a maintenance-free articulated joint that requires no daily lubrication, on-board diagnostics to assist with fault finding, and a fully enclosed exciter housing designed to extend the service life of the vibratory components.
This description was generated automatically from the listing details and may not reflect every specification. Please confirm with the seller before purchase.