The RK Tractors RK55 is a 4WD compact utility tractor manufactured by TYM for distributor RK Tractors (a part of Rural King) from 2017. The RK Tractors RK55 is equipped with a 2.1 L (127.6 cu·in) four-cylinder diesel engine and one of two transmissions: a mechanical shuttle transmission with 16 forward and 16 reverse gears or a hydrostatic transmission with infinite (3-range) forward and reverse gears.
The RK Tractors RK55 compact utility tractor used the Yanmar 4TNV86T-CR engine. It is a 2.1 L, 2,091 cm2, (127.6 cu·in) four-cylinder turbocharged diesel engine with 86.0 mm (3.39 in) of the cylinder bore and 90.0 mm (3.54 in) of the piston stroke. This engine produced 55.9 PS (41.1 kW; 55.0 HP) at 2,800 rpm of output power.
The RK Tractors RK55 is equipped with power steering, wet disc brakes, Two-post ROPS or Cab and 64.3 liters (17 US gal.; 14.1 Imp. gal) fuel tank.
Following attachments are available for the RK Tractors RK55 compact utility tractor:
- RK Tractors L110 loader
- RK Tractors BH8.0 backhoe
RK Tractors RK55 variants:
- RK55S: shuttle transmission and ROPS
- RK55H: hydrostatic transmission and ROPS
- RK55SC: shuttle transmission and cab
- RK55HC: hydrostatic transmission and cab
RK Tractors RK55 Specifications
| General Specifications | |
| Model | RK Tractors RK55 |
| Length | 3,580 mm (140.9 in) |
| Width | 1,620 mm (63.8 in) |
| Height | ROPS: 2,590 mm (102.0 in) Cab: 2,520 mm (99.9 in) |
| Wheelbase | 1,930 mm (76 in) |
| Ground clearance | 350 mm (13.8 in) |
| Weight | ROPS: 1,730 kg (3,814 lbs) Cab: 1,915 kg (4,223 lbs) |
| Fuel tank capacity | 64.3 liters (17 US gal.; 14.1 Imp. gal) |
| Battery | 12V |
| Cabin type | Two-post ROPS or Cab |
| Engine | |
| Engine model | Yanmar 4TNV86T-CR |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 2.1 L, 2,091 cm2, (127.6 cu·in) |
| Bore and stroke | 86.0 mm X 90.0 mm (3.39 in X 3.54 in) |
| Horsepower | 55.9 PS (41.1 kW; 55.0 HP) at 2,800 rpm |
| Starter | Electric |
| Transmission and chassis | |
| Chassis | 4×4 MFWD 4WD |
| Steering type | Power |
| Brakes | Wet disc |
| Transmission model | – |
| Transmission type | Mechanical shuttle |
| Gears | 16 forward and 16 reverse |
| Speed | Forward: 30.7 kmh (19.1 mph) Reverse: 26.2 kmh (16.3 mph) |
| Transmission model | – |
| Transmission type | Hydrostatic |
| Gears | Infinite (3-range) forward and reverse |
| Speed | Forward: 33.4 kmh (20.8 mph) |
| Tires | |
| Front tires | Ag: 9.5×16 Lawn/turf: 12×16.5 Industrial: 12×16.5 |
| Rear tires | Ag: 14.9×24 Lawn/turf: 16.9×24 Industrial: 16.9×24 |
| Three-Point Hitch | |
| Category | I |
| Control type | Position and draft control |
| Lift capacity (at ends) | 1,500 kg (3,310 lbs) |
| PTO (Power take-off shaft) | |
| Middle PTO type | Optional |
| Middle PTO speed | – |
| Rear PTO type | Independent with electro-hydraulic clutch |
| Rear PTO speed | 540 rpm |
| Hydraulic system | |
| Hydraulic type | – |
| Valves | 2 |
| Pump flow | 9.5 gpm (36 lpm) |
| Steering flow | 5.0 gpm (18.9 lpm) |
| Total flow | 14.5 gpm (54.9 lpm) |
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