Walk-Behind Trenchers SPECIFICATIONS
RT20
U.S.
Metric
DIMENSIONS*
Headshaft height
8.6 in
220 mm
Length, transport
84 in
2.1 m
Width, transport
33 in
840 mm
Height, transport
47 in
1.2 m
Centerline trench to outside edge machine
Left
15 in
381 mm
Right
18 in
457 mm
POWER
Engine
Honda® GX630
Fuel
Gasoline
Cooling medium
Air
Number of cylinders
2
Manufacturer’s net horsepower rating
20.8 hp
15.5 kW
Net torque @ 2,500 rpm
35.6 lb?ft
48.3 N?m
Rated speed
3,600 rpm*
Fuel consumption @ 3,000 rpm
1.77 gph
6.7 lph
POWER TRAIN
Ground drive transmission: hydrostatic, infinitely variable from zero to maximum, speed, and
direction controlled with dual levers
Digging chain drive: hydraulic direct drive, lever-operated, one speed forward and reverse
Pump drive: direct drive from engine
Tires, drive
18 x 9.5 x 8 bar lug / 12 psi / 83 kPa
Tires, trail
13 x 5 x 6
Trencher drive
Hydraulic
Direct drive
Digging chain
33K and 35K
Ground pressure
4.4 psi
OPERATION
Vehicle speeds with tires, max
Transit forward
243 fpm
74 m/min
Transit reverse
97 fpm
30 m/min
Vehicle speeds with track, max
Transit forward
169 fpm
51 m/min
Transit reverse
68 fpm
21 m/min
Digging chain speed @ 3,600 rpm
420 fpm
12 m/min
Spoil handling
Auger, type
Single, open end
381 mm
15 in OD x 1.5 in ID
Auger, size
OD x 40 mm
x 8.75 in long
ID x 222 mm long
Trench cleaner type
Mechanical
Trench cleaner size
4-6 in
100-152 mm
Operating weight
33,000-lb (14969-kg) test, 2-pitch
digging chain and 24-in (610 mm)
1,120 lb
508 kg
roller boom
HYDRAULIC SYSTEM @ 3,600 rpm
Digging drive pump capacity
12 gpm
45 l/min
Ground drive dual hydrostat pump
11.4 gpm total
43 l/min
Filtration
Return flow, 10 micron nominal
FLUID CAPACITIES
Fuel
Gasoline
Tank
3.5 gal
13 l
Engine oil
2.1 qt
2L
Hydraulic reservoir
8 gal
30 l
Hydraulic system
8.5 gal
32 l
TRENCH SIZE, MAX
Depth
36 in
914 mm
Width
4-6 in
112-152 mm
NOISE LEVEL
Operator
93 dBA sound pressure per ISO 6394
Exterior
102 dBA sound power per ISO 6393
VIBRATION LEVEL
Vibration at the operator’s hand during normal operation is 5.82 m/s2.
BATTERY
Auxiliary power outlet
12V, top-post
SAE reserve capacity
41 min
SAE cold crank
340 amps
RT24
Walk-Behind Trenchers SPECIFICATIONS
U.S.
Metric
DIMENSIONS*
Headshaft height
8.6 in
220 mm
Length, transport
84 in
2.1 m
Width, transport
33 in
840 mm
Height, transport
47 in
1.2 m
Centerline trench to outside edge machine
Left
15 in
381 mm
Right
18 in
457 mm
POWER
Engine
Honda GX690
Fuel
Gasoline
Cooling medium
Air
Number of cylinders
2
Manufacturer’s net horsepower rating
22.3 hp
16.6 kW
Net torque @ 2,500 rpm
35.6 lb?ft
48.3 N?m
Rated speed
3,600 rpm*
Fuel consumption @ 3,000 rpm
1.77 gph
6.7 lph
POWER TRAIN
Ground drive transmission: hydrostatic, infinitely variable from zero to maximum, speed, and
direction controlled with dual levers
Digging chain drive: hydraulic direct drive, lever-operated, one speed forward and reverse
Pump drive: direct drive from engine
Tires, drive
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