The king of the Ditch Witch mountain is the HT300, a rock-digging workhorse capable of trenching up to ten feet (3.1 m) deep and up to 36 inches (914 mm) wide in the most extreme jobsite conditions.
KEY FEATURES, HT300
- Exclusive flywheel gearbox delivers maximum power to the trenching attachment on demand while minimizing shock to the hydraulic system.
- Forged, heat-treated, high-alloy steel headshaft is guaranteed for life.
SPECIFICATIONS, HT300
| DIMENSIONS | U.S. | METRIC |
| Transport height | 122 in | 2.8 m |
| Transport length (with 6-ft/1.8-m boom and trench cleaner) | 29 ft 10 in | 9.09 m |
| Transport width | 102 in | 2.61 m |
| Weight, maximum | 70,500 lb | 32,000 kg |
| OPERATION | U.S. | METRIC |
| Ground drive speed, forward | 0 – 2.5 mph (high) | 0 – 4.0 km/h (high) |
| Ground drive speed, reverse | 0 – 2.5 mph (high) | 0 – 4.0 km/h (high) |
| Ground drive transmission: Dual path, hydrostatic drive; Planetary transmission | ||
| Brake: Integral spring-applied, pressure-released, wet disc brake | ||
| Trench depths | 4 ft, 6 ft, 8 ft, 10 ft | 1.2 m, 1.8 m, 2.4 m |
| Trench widths (Single chain) | 12 – 18 in | 300 – 460 mm |
| Trench widths (Double chain) | 24 – 36 in | 600 – 900 mm |
| Digging chain speed | 0 – 530 fpm | 0 – 160 m/min |
| CONVEYOR DRIVE | U.S. | METRIC |
| Belt speed | 0 – 790 fpm | 0 – 240 m/min |
| HYDRAULIC SYSTEM | ||
| Type: Pressure and flow compensated | ||
| Flow rate, maximum | 43 gpm | 164 l/min |
| CONVEYOR DRIVE | ||
| Discharge direction: Right or left | ||
| Conveyor length | 98.5 in | 2.5 m |
| HYDRAULIC SYSTEM | U.S. | METRIC |
| Pressure, maximum | 2600 psi | 172 bar |
| CONVEYOR DRIVE | U.S. | METRIC |
| Conveyor belt width | 24 in | 600 mm |
| Discharge height | 57 in | 1.45 m |
| POWER | ||
| Engine: Caterpillar c9 acert 5834 3 | ||
| Fuel: Diesel | ||
| Cooling medium: Liquid | ||
| Injection: Direct | ||
| Aspiration: Turbocharged and air cooled | ||
| Number of cylinders: 6 | ||
| Displacement | 537 cu in | 8.8 l |
| Bore | 4.41 in | 112 mm |
| Stroke | 5.87 in | 149 mm |
| Net power rating per sae j1349 | 300 hp | 224 kw |
| Rated speed | 2200 rpm | 2200 rpm |
| FLUID CAPACITIES | U.S. | METRIC |
| Fuel tank | 192 gal | 730 l |
| Hydraulic reservoir | 73 gal | 275 l |
