RT40
Compact Trencher
One of the most popular tractors in the Ditch Witch RT family, the 40-hp (29.8 kW) RT40 is equipped with a composite hood, an easy-to-read instrument panel and two-wheel power steering. And like every Ditch Witch machine, it is built to provide years of exceptional productivity.
    Key Features
  • User-friendly operation, with speed/direction and attachment controls grouped together; the backfill blade is controlled by a highly responsive joystick.
  • Engine service points are easily accessible from one side of the machine; easy-access remote engine oil drain for fast, clean service.
RT40
SPECIFICATIONS
Dimensions
 U.S.
Trench depth, max.
 63 in
Angle of approach
 20°
Angle of departure
 17°
Trench width, min to max
 6 in - 12 in
Boom angle, down
 58°
Boom angle, up
 50°
Centerline of trench to outside edge
- Left, min
 35 in
- Right, min
 29 in
Headshaft height, digging chain
 17 in
Overhang, beyond tire
 3.5 in
Height
 86 in
Headshaft overhang
 24.5 in
Length, transport
 155 in
Wheelbase
 48 in
Spoil discharge reach, min to max
 17 in - 20 in
Width
 64 in
Tread
 46 in
Ground Clearance
 7 in
 
Operation
 U.S.
Maximum forward speed
 4.3 mph
Maximum reverse speed
 2.7 mph
Maximum trenching speed @ full load (varies with soil condition)
 150 fpm
Vehicle clearance circle (SAE)
- Front steer only
 28 ft
- Coordinated steer
 20 ft
Basic unit weight
 4200 lb
Maximum digging chain speed
 420 fpm
 
Backfill Blade
 U.S.
Blade width
 64 in
Blade height
 14 in
Lift height, above ground
 12 in
Blade drop, below ground
 8 in
Maximum swing angle, left/right
 28°
Tilt angle, up/down
 11°
 
Power
 U.S.
Engine
 Deutz F3M2011
Fuel
 Diesel
Cooling medium
 Oil/External
Injection
 Direct
Aspiration
 Natural
Number of cylinders
 3
Displacement
 142 in3
Bore
 3.7 in
Stroke
 4.4 in
Manufacturer's gross power rating (SAE J1995)
 42.4 hp
Estimated net power rating (SAE J1349)
 39 hp
Rated speed
 2300 rpm
Emissions Compliance
 EPA Tier 4i
 
Power Train
 U.S.
Ground drive transmission
 Hydrostatic drive, infinitely variable from zero to maximum, foot-pedal and hand-lever operated speed/direction control
Differentials
 Dana Model 44, Limited slip (optional); Dana Model 60, limited slip (optional)
Parking brake
 Disc, hand-operated
Service brake
 Ground drive speed/direction control brakes machine hydraulically when moved to neutral position
Attachment drive transmission
 Hydrostatic, lever operated, speed infinitely variable from zero to maximum forward with limited stroke reverse
Trencher drive transmission
 Hydrostatic
 
Tires/Pressure
 U.S.
26 x 12.00-12, 4-ply bar lug
 20 psi
29 x 12.50-15, 4-ply bar lug
 30 psi
 
Hydraulic System @ 2300 rpm
 U.S.
Ground drive pump capacity
 29.3 gpm
Ground drive pump relief pressure
 3750 psi
Attachment drive, trencher
 5000 psi
Attachment drive, plow/saw
 3750 psi
Attachment pump capacity
 29.3 gpm
Auxilliary pump capacity
 10.2 gpm
Auxilliary pump relief pressure
 2500 psi
Filtration
 25 psi (1.7 bar) return/charge pump; 15 psi (1 bar) bypass, 10 micron
 
Fluid Capacities
 U.S.
Fuel tank
 13 gal
Engine oil
 8 qt
Hydraulic system
 13 gal
Hydraulic reservoir
 9.5 gal
Transmission
 Hydrostat
 
Battery
 U.S.
Group
 2/26R/70
SAE reserve capacity rating
 110 min
SAE cold crank rating @ 0° F (-18° C)
 800 A
Auxiliary power outlet
 12V, 5A
 
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