Overview
The RK55S is a versatile 55.1 hp compact utility tractor powered by a turbocharged Yanmar 2.1L diesel engine and a 16-speed mechanical shuttle transmission. It features a high-capacity Category I hitch capable of lifting 3,314 lbs at the ends and comes standard with four-wheel drive for enhanced traction across various agricultural settings.
Ideal Applications
Heavy Lifting and Implements:
With a Category I rear hitch providing a lift capacity of 3,314 lbs at the ends and an independent 540 PTO, this tractor is well-suited for operating a wide range of heavy rear-mounted implements.
Material Handling and Excavation:
The 14.5 gpm total hydraulic flow and support for front-end loader and backhoe attachments make this machine highly effective for earthmoving and site maintenance tasks.
Field and Utility Work:
The four-wheel drive system and 16-speed mechanical shuttle transmission provide the necessary gear range and traction to handle diverse terrains and general farm duties.
Production
| Description | Compact Utility tractor / Original price was $21,799 in 2017 |
|---|---|
| Distributor | RK Tractors (a part of Rural King) |
| Manufacturer | TYM |
Engine
| Engine type | Yanmar 2.1L 4-cyl diesel |
|---|---|
| Fuel tank | 17 gal (64.3 L) |
| Bore/Stroke | 3.39x3.54 inches (86 x 90 mm) |
| Description | Yanmar 4TNV86T-CR / turbocharged diesel / 4-cylinder / liquid-cooled |
| Displacement | 127.6 ci (2.1 L) |
| Fuel system | common rail direct injection |
| Power (gross) | 55.1 hp (41.1 kW) |
| Rated RPM | 2800 |
| Starter | electric |
| Starter volts | 12 |
| Engine (gross) | 55.1 hp (41.1 kW) |
| PTO (claimed) | 44.9 hp (33.5 kW) |
Transmission
| Description | Four synchronized gears (1-4) in four ranges with mechanical shuttle. |
|---|---|
| Gears | 16 forward and reverse |
| Transmission type | 16-speed mechanical shuttle |
| Type | mechanical shuttle |
Mechanical
| Description | Power steering / Wet disc brakes / Two-post ROPS. |
|---|---|
| Drive type | Four-wheel drive |
Hydraulics
| Pump flow | 9.5 gpm (36.0 lpm) |
|---|---|
| Steering flow | 5 gpm (18.9 lpm) |
| Total flow | 14.5 gpm (54.9 lpm) |
| Valves | 2 |
Hitch
| Control | position and draft control |
|---|---|
| Rear lift (at 24"/610mm) | 2945 lbs (1335 kg) |
| Rear lift (at ends) | 3314 lbs (1503 kg) |
| Rear Type | I |
PTO
| Clutch | electro-hydraulic |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery volts | 12 |
|---|---|
| Charging amps | 70 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Ground clearance | 13.8 inches (35 cm) |
|---|---|
| Height (ROPS) | 102.1 inches (259 cm) |
| Length | 141.3 inches (358 cm) |
| Weight | 3814 lbs (1730 kg) |
| Wheelbase | 76.2 inches (193 cm) |
| Width | 63.8 inches (162 cm) |
| Front tire | 9.5x16 |
| Rear tire | 14.9x24 |
| Weight | 3814 lbs (1730 kg) |
| Wheelbase | 76.2 inches (193 cm) |
| Industrial front | 12x16.5 |
| Industrial rear | 16.9x24 |
| Lawn/turf front | 12x16.5 |
| Lawn/turf rear | 16.9x24 |
| Standard tires (ag) | Front: 9.5x16. Rear: 14.9x24 |
RK Tractors RK55S attachments
| Description | front-end loader / backhoe |
|---|
References
| Description | RK55 Shuttle Operator's Manual |
|---|
Speeds
| Description | Reverse speeds are 15% slower than forward. |
|---|
Variants
| RK55H | hydrostatic ROPS |
|---|---|
| RK55HC | hydrostatic cab |
| RK55S | shuttle ROPS |
| RK55SC | shuttle cab |