RT75 HEAVY DUTY TRENCHER

December 17th, 2008

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The 74-hp (55.2 kW) RT75 has the compact size and muscle you need for tight residential or commercial jobsites. And you can throw that muscle around in a variety of ways with an assortment of trenchers plus saw, backhoe, vibratory plow, reel carrier, and combination trencher/plow attachments.


KEY FEATURES, RT75



  • Solid backfill blade lift arms and cast blade pivot increase structural strength of the backfill components.

  • Planetary axles with locking differentials make maximum use of torque at the wheel and offer high ground clearance.

  • Four-point tie-downs (at each corner of the machine) provide increased hauling security.

SPECIFICATIONS, RT75
































































































































































































































































































































































































GENERAL
Ditch Witch Model RT75 tractor, 4-wheel drive, rigid frame, hydrostatic or powershift ground drive, optional 4-wheel drive steering, hydrostatic or powershift attachment drive, riding unit; with 35 x 19.00-16 tires
DIMENSIONS U.S. METRIC
Angle of approach 20°
Height 108 in 2.74 m
Length, nose to rear mount 122 in 3.10 m
Length, transport 131 in 3.33 m
Wheelbase 63 in 1.60 m
Width 71 in 1.80 m
Tread 55 in 1.40 m
OPERATION U.S. METRIC
With hydrostatic transmission
Forward speeds
    Low/Low 0.7 mph 1.1 km/h
    Low/High 1.4 mph 2.2 km/h
    High/Low 5.2 mph 8.4 km/h
    High/High 9.9 mph 15.9 km/h
Reverse speeds
    Low/Low 0.4 mph 0.7 km/h
    Low/High 0.8 mph 1.4 km/h
    High/Low 3.3 mph 5.2 km/h
    High/High 6.2 mph 9.9 km/h
With powershift transmission
Forward speeds
    Low/Low 0.4 mph 0.6 km/h
    High/Low 5.8 mph 9.3 km/h
    High/High 8.6 mph 13.8 km/h
Reverse speeds
    Low/Low 0.4 mph 0.6 km/h
    High/Low 5.8 mph 9.3 km/h
    High/High 8.6 mph 13.8 km/h
Vehicle clearance circle (SAE),
wall-to-wall, w/backfill blade
    Front steer only 32 ft 9.75 m
    Coordinated steer 20 ft 6.10 m
Basic unit weight 6920 lb 3140 kg
Ground clearance
    Hydrostatic 11 in 280 mm
    Powershift 9 in 229 mm
BACKFILL BLADE U.S. METRIC
    with 35 x 19.00-16 tire
Blade width 72 in 1.83 m
Blade height 17 in 430 mm
Lift height, above ground 19 in 480 mm
Blade drop, below ground 13 in 330 mm
Maximum swing angle, left/right 30°
Tilt angle, up/down 24°
POWER U.S. METRIC
Engine John Deere 4045TF270
Displacement 276 in3 4.5 L
Bore 4.2 in 106 mm
Stroke 5 in 127 mm
Manufacturer”s gross power rating (per SAE J1995) 74 hp 55 kW
Estimated net power (per SAE J1349) 71 hp 53 kW
Rated speed 2500 rpm
Maximum engine tilt angles: Exceeding these operating angles will cause engine damage; this does not imply that the machine is stable to the maximum angle of safe engine operation.
    Longitudinal 30°
    Lateral 30°
POWER TRAIN U.S. METRIC
Ground drive transmission Hydrostatic or powershift
Attachment drive transmission: Hydrostatic, lever-operated, speed infinitely variable from zero to maximum, or powershift with 2-speed control of forward and reverse.
DIFFERENTIALS
Planetary front and rear with optional rear steering
Service Brake Disc, foot-operated
Parking brake Disc, hand-operated
Tires/pressure
    31 x 15.50-15, 10-ply bar lug 45 psi 310 kPa
    35 x 19.00-16, 12-ply bar lug 55 psi 379 kPa
HYDRAULIC SYSTEM @ 2500 RPM U.S. METRIC
With hydrostatic transmission
Pump capacity
    Ground drive 30.4 gpm 115 L/min
    Attachment 36.3 gpm 137 L/min
    Auxiliary 13 gpm 49 L/min
Pump relief pressure
    Ground drive 5000 psi 345 bar
    Attachment 6090 psi 420 bar
    Auxiliary 2500 psi 172 bar
With powershift transmission
Pump capacity
    Ground drive 9.5 gpm 36 L/min
    Auxiliary 13 gpm 49 L/min
Pump relief pressure
    Ground drive 4000 psi 276 bar
    Auxiliary 2500 psi 172 bar
FLUID CAPACITIES U.S. METRIC
Fuel tank 30 gal 114 L
Engine oil, w/filter 8 qt 7.5 L
Hydraulic reservoir 13 gal 49 L
Hydraulic system 18 gal 68 L
Cooling system 17 qt 16 L
Transmission fluid (powershift only) 10 qt 11 L
BATTERY U.S. METRIC
Group 34 h
SAE reserve capacity 120 min
SAE cold crank rating @ 0° F (-18° C) 800 A
Auxiliary power outlet 12V, 10 A
Specifications are general and subject to change without notice. If exact measurements are required, equipment should be weighed and measured. Due to selected options, delivered equipment may not necessarily match that shown. *(Per SAE J1995) **(Per SAE J1349)

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