Barreto Manufacturing Inc. products

The 712MTH micro trencher features a unique automatic wheel drive propulsion system. This trencher utilizes a load sensing hydraulic valve to adjust the trenching wheel speed to the load on the digging chain. When the load on the digging chain increases, the sensing valve sends less oil to the wheel drive motor and the wheel speed will automatically slow down. When the load on the digging chain decreases, the sensing valve sends more oil to the wheel drive motor and the wheel drive speed will automatically increase. This keeps a constant load on the engine, regardless of the depth of cut or differing soil conditions. Not only does this help the trencher run at optimal efficiency, it reduces stress on the components, increasing their longevity.

Sometimes the job demands a more compact approach without sacrificing production speed. To meet the needs of the residential contractor who may be working in tight spaces, this self-propelled trencher can easily handle sprinkler systems, electrical lines, and other shallow trench applications. The 912HM saves on space while still providing the horsepower necessary to trench up to 24” deep. The boom pivot design keeps high wear components out of the dirt and is easily maintained. The front end pivots on a pin instead of a boom pivot bushing. This reduces maintenance issues often caused by dirt and debris.

All hydraulic means no belts, gears, or chains. The hydraulic chain drive motor is attached directly to the head shaft. Maintenance is easy and repairs are minimized. A lower center of gravity provides stability. The outboard bearing is designed to protect the auger shaft from the bending that is sometimes caused by the impact of rocks or other debris when trenching.The control panel is simple and understandable. The safety clutch engages and disengages the wheel and chain drives. When the clutch is released, the engine continues to run and the controls remain in place, ready for you to resume trenching at any time. Variable speed drive allows the operator to adjust their wheel speed to the soil conditions. The reversible chain drive can be operated manually to dislodge obstructions or debris. The operator can manually unlock the axle with a lever on the control panel for easier turning when transporting.