Introduction
RK55S Compact Utility Tractor
The RK55S is a compact utility tractor introduced in 2017, manufactured by TYM and distributed under the RK Tractors brand. It is designed to serve a variety of agricultural and land management applications, combining a robust powertrain with a versatile transmission system.
Engine and Performance
The tractor is powered by a Yanmar 4TNV86T-CR liquid-cooled, 4-cylinder turbocharged diesel engine. With a displacement of 127.6 cubic inches (2.1 liters) and common rail direct injection, it produces a gross power output of 55.1 horsepower (41.1 kW) at a rated speed of 2800 RPM.
Transmission and Drivetrain
The RK55S utilizes a mechanical shuttle transmission featuring 16 forward and 16 reverse gears. The system is composed of four synchronized gears across four ranges, allowing for efficient speed management. The tractor is equipped with four-wheel drive, power steering, and wet disc brakes for enhanced control in varying terrain.
Hydraulics and Hitch
The hydraulic system provides a total flow of 14.5 gpm (54.9 lpm), with 9.5 gpm (36.0 lpm) dedicated to the pump flow and 5 gpm (18.9 lpm) for steering. It features a Category I rear 3-point hitch equipped with position and draft control, capable of lifting up to 3,314 lbs (1,503 kg) at the ends.
Dimensions and Weight
With a wheelbase of 76.2 inches (193 cm) and a ground clearance of 13.8 inches (35 cm), the machine maintains a total weight of 3,814 lbs (1,730 kg). It stands 102.1 inches (259 cm) tall at the ROPS, providing a compact footprint for maneuvering in restricted spaces.
Conclusion
The RK55S is a well-balanced compact utility tractor suitable for small-scale farming and property maintenance. Its combination of a high-RPM Yanmar engine, synchronized shuttle transmission, and capable hydraulic system makes it a reliable tool for operators requiring multi-purpose utility performance.
Production Information of RK Tractors, RK55S
- Original price was $21,799 in 2017
- Compact Utility tractor
| Distributor | RK Tractors (a part of Rural King) |
|---|---|
| Manufacturer | TYM |
Dimension and Tires Information of RK Tractors, RK55S
| Wheelbase | 76.2 inches [193 cm] |
|---|---|
| Weight | 3814 lbs [1730 kg] |
| Height (ROPS) | 102.1 inches [259 cm] |
| Length | 141.3 inches [358 cm] |
| Ground clearance | 13.8 inches [35 cm] |
| Width | 63.8 inches [162 cm] |
| Standard tires (ag) | Front: 9.5x16. Rear: 14.9x24 |
|---|---|
| Industrial rear | 16.9x24 |
| Industrial front | 12x16.5 |
| Lawn/turf front | 12x16.5 |
| Lawn/turf rear | 16.9x24 |
Engine Specifications of RK Tractors, RK55S
- Yanmar 4TNV86T-CR
- Liquid-cooled
- Turbocharged diesel
- 4-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 127.6 ci [2.1 L] |
| Fuel system | Common rail direct injection |
| Bore/Stroke | 3.39x3.54 inches [86 x 90 mm] |
| Starter | Electric |
| Rated RPM | 2800 |
| Power (gross) | 55.1 hp [41.1 kW] |
Transmission Information of RK Tractors, RK55S
Transmission variants 1
- Four synchronized gears (1-4) in four ranges with mechanical shuttle.
| Type | Mechanical shuttle |
|---|---|
| Gears | 16 forward and reverse |
Mechanical Specs of RK Tractors, RK55S
- Four-wheel drive
- Two-post ROPS.
- Power steering
- Wet disc brakes
Power Information of RK Tractors, RK55S
| Rear PTO | Independent |
|---|---|
| Clutch | Electro-hydraulic |
| Rear PTO Type | 540 (1.375) |
Hydraulics Specifications of RK Tractors, RK55S
| Valves | 2 |
|---|---|
| Steering flow | 5 gpm [18.9 lpm] |
| Pump flow | 9.5 gpm [36.0 lpm] |
| Total flow | 14.5 gpm [54.9 lpm] |
Three-Point Hitch of RK Tractors, RK55S
| Rear Type | I |
|---|---|
| Rear lift (at 24"/610mm) | 2945 lbs [1335 kg] |
| Control | Position and draft control |
| Rear lift (at ends) | 3314 lbs [1503 kg] |
Electrical System of RK Tractors, RK55S
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Charging system | Alternator |
| Charging amps | 70 |
Where it sits
With 55 HP, the RK Tractors RK55S sits just above RK37S (37 HP) in RK Tractors's range. Its power puts it in the 36th percentile of 2010s models in our database (2476 machines).
Frequently asked questions
How much horsepower does the RK Tractors RK55S have?
The RK Tractors RK55S delivers 55 HP.
What years was the RK Tractors RK55S produced?
The RK Tractors RK55S was produced in 2017+.
What engine does the RK Tractors RK55S have?
The RK Tractors RK55S is powered by a Turbocharged diesel, 4-cylinder engine.
What transmission does the RK Tractors RK55S use?
The RK Tractors RK55S uses a Mechanical shuttle transmission.
How much does the RK Tractors RK55S weigh?
The RK Tractors RK55S weighs 3814 lbs [1730 kg].
Is the RK Tractors RK55S 4WD?
The RK Tractors RK55S is available in 4WD.