The DER was designed to be the ultimate roadside maintenance unit. Convert an idle grader to a machine specialized for highway, roadway , and trail maintenance using a power unit, custom boom and the DER-120B. It can also be installed without the powerpack or boom on systems that do not require them.
The attachment can tilt forward and backward 15 degree on each side.
288-inch (730-cm) maximum vertical reach (vertical cut)
336-inch (853-cm) maximum lateral reach, fron the center of the machine (horizontal cut)
68-inch (173-cm) maximum below-ground depth (horizontal cut)
| DER Roadside Maintenance Unit | |
|---|---|
| Minimum Excavator Size | 20,000 lb, 10 t |
| Recommended Minimum Carrier Power | 65 HP, 48 kW |
| Cutting Width | 47", 119 cm |
| Cutting Distance from Ground Level | 0.625", 1.6 cm |
| Number of Blades on Rotor | 21 |
| Optimal Target Material Diameter | <4", <10 cm |
| Exterior Length | 56", 142 cm |
| Exterior Height | 21", 53 cm |
| Exterior Width | 29", 74 cm |
| Rotor Diameter | 14", 35 cm |
| Approximate Typical Weight | 1,200 lb, 544 kg |
| Hydraulic System | ------------------------- |
| Variable Displacement Axial Piston Motor | 60 cc |
| Minimum Required Continuous Flow | 16 gal/min, 61 L/min |
| Maximum Operating Pressure | 4,000 psi, 275 bar |
| Rotating Speed | 2,500 rpm |
| Pressure Line I.D. | 0.75", #12 |
| Return Line I.D. | 0.75", #12 |
| Drain Line I.D. | 0.5, #8 |
| Other Features | ------------------------- |
| Type of Sharpenable Bolt-on Forged Blades | V-Back |
| Tilt System | Optional |
| Bolt-on Wear Liner | Included |
| Approximate Weight (All Options) | 1,430 lb, 650 kg |
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