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• Fabricante:
  Ditch Witch
• Modelo:
  JT21
• Tamaño de la plataforma:
  20,001 - 30,000 lbs pullback

OPERATION
Maximum Spindle Speed: 270 rpm
Maximum Spindle Torque: 2,250 ft-lb (3050 Nm)
Carriage Thrust Travel Speed: 215 fpm (65.5 m/min)
Carriage Pullback Travel Speed: 215 fpm (65.5 m/min)
Thrust Force: 20,000 lb (89 kN)
Pullback Force: 21,000 lb (93.4 kN)
Bore Diameter: 4 in (102 mm)
Backreamer Diameter: Soil Dependent
Ground Travel Speed Forward/reverse: 2.9 mph (4.7 km/h)

POWER
Engine: Deutz TD2.9
Fuel: Diesel
Cooling Medium: Liquid
Injection: Direct
Aspiration: Turbocharged
Number of Cylinders: 4
Displacement: 177 in3 (2.9 L)
Bore: 3.62 in (92 mm)
Stroke: 4.33 in (110 mm)
Manufacturer’s Gross Power Rating: 74 hp (55 kW)
Rated Speed: 2,600 rpm
Emissions Compliance, highly regulated: EPA Tier 4 (EU Stage V)
Emissions Compliance, less regulated: EPA Tier 4i (EU Stage IIIA)

DIMENSIONS
Length: 217.9 in (5.53 m)
Width: 55.5 in (1.41 m)
Height: 95.5 in (2.43 m)
Operating Weight: 12,420 lb (5634 kg)
Entry Angle: 11-15°
Angle of Approach: 17°
Angle of Departure: 17°

DRILLING FLUID SYSTEM
Maximum Pressure: 1,000 psi (69 bar)
Maximum Flow: 35 gpm (132 l/min)

FLUID CAPACITIES
Hydraulic Reservoir: 16.4 gal (62.1 L)
Fuel Tank: 28.2 gal (106.7 L)
Engine Lubrication Oil (with filter): 9.5 qt (9 L)
Cooling System: 5 gal (18.9 L)

POWER PIPE
Length of Drill Pipe: 120 in (3.05 m)
Diameter of Drill Pipe (tool joint end): 2.63 in (66.8 mm)
Diameter of Drill Pipe: 2.06 in (52.3 mm)
Minimum Bend Radius: 107 ft (32 m)
Weight of Drill Pipe (lined): 67 lb (30.4 kg)

BATTERY (2 USED)
SAE Reserve Capacity Rating: 195 min
SAE Cold Crank Rating @ 0°F (-18°C): 950 amps

NOISE LEVEL
Operator sound pressure per ISO 6394: < or = 82 dBA

VIBRATION LEVEL
Average vibration transmitted to the operator’s hand and whole body during normal operation does not exceed 2.5 and 0.5 m/sec2 respectively.