| Manufacturer | RK Tractors |
| Price | 23,799(USD) |
| Model | RK55H |
| Equipment Type | Compact Utility Tractors |
| Factory |
RK TRACTORS RK55H POWER
| Engine (gross) | 55.1 hp/41.1 kW |
| PTO (claimed) | 42.2 hp/31.5 kW |
ENGINE DETAIL
The RK Tractors RK55H features a Yanmar 4TNV86T-CR turbocharged diesel engine with a displacement of 2.1 L and a maximum output of 55.1 hp at 2800 RPM, providing robust power for various agricultural tasks. The common rail direct injection system enhances fuel efficiency and responsiveness, making it suitable for both heavy-duty use and precision applications. However, potential challenges include maintenance of the turbocharged system and ensuring adequate cooling for prolonged operation under load, critical for performance in harsh conditions.
| Description | Yanmar 4TNV86T-CR/turbocharged diesel/4-cylinder/liquid-cooled |
| Displacement | 127.6 ci/2.1 L |
| Bore/Stroke | 3.39x3.54 inches/86 x 90 mm |
| Power (gross) | 55.1 hp/41.1 kW |
| Fuel system | common rail direct injection |
| Rated RPM | 2800 |
| Starter | electric |
| Starter volts | 12 |
RK TRACTORS RK55H ENGINE
The RK55H tractor is powered by a Yanmar 2.1L 4-cylinder diesel engine, offering reliable performance and durability for various agricultural tasks. With a 17-gallon (64.3 L) fuel tank, it provides extended operational time, reducing downtime for refueling during intensive work. However, the compact diesel engine may limit power output compared to larger competitors, which could pose challenges in heavy-duty applications requiring higher torque.
| Description | Yanmar 2.1L 4-cyl diesel |
| Fuel tank | 17 gal/64.3 L |
TRANSMISSION
The RK55H tractor features a hydrostatic transmission that provides infinite speed selection within its 3-range system, allowing for precise control in various operational scenarios. This transmission setup is advantageous for tasks requiring gradual speed adjustments, enhancing maneuverability in tight spaces. However, it may result in higher maintenance needs due to the complexity of hydraulic systems compared to traditional gear-driven tractors.
| Type | hydrostatic |
| Gears | infinite (3-range) forward and reverse |
MECHANICAL
The RK Tractors RK55H features a 4x4 MFWD configuration, enhancing traction in varied terrain, making it suitable for agricultural tasks in challenging conditions. Its hydrostatic transmission offers ease of operation, allowing smooth speed adjustments without the need for manual gear shifting, though it may present a learning curve for operators accustomed to traditional transmissions. The wet disc brakes provide reliable stopping power, but regular maintenance is essential to ensure optimal performance and longevity in demanding environments.
| Chassis | 4x4 MFWD 4WD |
| Steering | power |
| Brakes | wet disc |
| Cab | Two-post ROPS. |
| Transmission | hydrostatic |
HYDRAULICS
| Valves | 2 |
| Pump flow | 9.5 gpm/36.0 lpm |
| Total flow | 14.5 gpm/54.9 lpm |
| Steering flow | 5 gpm/18.9 lpm |
TRACTOR HITCH
| Rear Type | I |
| Control | position and draft control |
| Rear lift (at ends) | 3314 lbs/1503 kg |
| Rear lift (at 24 | 2945 lbs/1335 kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | electro-hydraulic |
| Rear RPM | 540 (1.375) |
| Mid PTO | Optional |
RK TRACTORS RK55H TIRES
The RK55H tractor offers versatile tire options, accommodating agricultural, lawn/turf, and industrial applications, allowing for optimized performance across varied terrains. The standard agricultural tires (9.5x16 front and 14.9x24 rear) provide excellent traction and stability for farming tasks, while the turf tires minimize ground disturbance for landscaping work. However, switching between tire types may require additional adjustments in load capacity and handling characteristics, impacting efficiency based on the intended use.
| Standard tires (ag) | Front: 9.5x16. Rear: 14.9x24 |
| Lawn/turf front | 12x16.5 |
| Lawn/turf rear | 16.9x24 |
| Industrial front | 12x16.5 |
| Industrial rear | 16.9x24 |
DIMENSIONS
| Wheelbase | 76.2 inches/193 cm |
| Length | 141.3 inches/358 cm |
| Width | 63.8 inches/162 cm |
| Height (ROPS) | 102.1 inches/259 cm |
| Weight | 3814 lbs/1730 kg |
| Ground clearance | 13.8 inches/35 cm |
DIMENSIONS & TIRES
The RK Tractors RK55H features a compact wheelbase of 76.2 inches, allowing for enhanced maneuverability in tight spaces, making it suitable for small farm operations or landscaping tasks. Weighing 3814 lbs, its stability is solidified by a robust tire configuration (9.5x16 front and 14.9x24 rear), which provides good traction on various terrains but may limit agility on exceptionally soft soil. While the weight allows for substantial lifting capability, farmers must consider potential challenges with mobility in softer ground conditions.
| Wheelbase | 76.2 inches/193 cm |
| Weight | 3814 lbs/1730 kg |
| Front tire | 9.5x16 |
| Rear tire | 14.9x24 |
ATTACHMENT OVERVIEW
| Description | Front-end loader/Backhoe |
RK TRACTORS L110 LOADER
| Loader weight | 1261 lbs/571 kg |
| Height (to pin) | 109.1 inches/277 cm |
| Clearance, dumped bucket | 80.8 inches/205 cm |
| Dump reach | 21.4 inches/54 cm |
| Dump angle | 45?/ |
| Reach at ground | 73.1 inches/185 cm |
| Rollback angle | 35?/ |
| Breakout force (at pin) | 4938 lbs/2239 kg |
| Lift to full height (at pin) | 2478 lbs/1124 kg |
| Bucket width | 72 inches/182 cm |
| Attachment style | quick coupler |
RK TRACTORS BH8.0 BACKHOE
| Backhoe type | RK Tractors BH8.0 Backhoe |
| Weight | 1500 lbs/680 kg *Without bucket |
| Transport height | 91.2 inches/231 cm |
| Bucket width | 9 inches/22 cm/12 inches/30 cm/16 inches/40 cm/18 inches/45 cm/24 inches/60 cm |
| 2-Foot flat digging depth | 103.2 inches/262 cm |
| Reach from pivot | 134.4 inches/341 cm |
| Loading height | 92.4 inches/234 cm |
| Bucket Rotation | 151 |
| Swing Arc | 180 |
| Bucket force | 4435 lbs/2011 kg |
| Dipperstick force | 2694 lbs/1221 kg |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 70 |
| Battery volts | 12 |