| Manufacturer | Challenger |
| Price | 133,000(USD) |
| Model | 55 |
| Equipment Type | Agricultural Crawler Tractors |
| Factory |
CHALLENGER 55 POWER
| Drawbar (claimed) | 191 hp/142.4 kW |
| PTO (claimed) | 225 hp/167.8 kW |
ENGINE DETAIL
The Challenger 55 tractor, powered by a Caterpillar 3126 turbocharged diesel engine, offers robust performance with a displacement of 7.2 L and a rated RPM of 2100, making it suitable for demanding agricultural tasks that require consistent torque. Its 6-cylinder configuration provides good power-to-weight ratio, but the higher displacement may lead to increased fuel consumption, necessitating careful management in operations. With a coolant capacity of 34.4 quarts, effective thermal management is crucial to prevent overheating during extended use, especially in high-load scenarios.
| Description | Caterpillar 3126/turbocharged diesel/6-cylinder/liquid-cooled |
| Displacement | 442 ci/7.2 L |
| Bore/Stroke | 4.33x5.00 inches/110 x 127 mm |
| Rated RPM | 2100 |
| Starter volts | 12 |
| Coolant capacity | 34.4 qts/32.6 L |
CHALLENGER 55 ENGINE
The Caterpillar 7.2L 6-cylinder diesel engine in the Challenger 55 offers high torque and efficiency, making it suitable for heavy-duty operations. Its 125-gallon fuel tank provides extended runtime, ideal for long hours in the field without frequent refueling. However, the tractor’s weight and size may limit maneuverability in tighter spaces, affecting performance in smaller farms or precision tasks.
| Description | Caterpillar 7.2L 6-cyl diesel |
| Fuel tank | 125 gal/473.1 L |
TRANSMISSIONS OVERVIEW
The Challenger 55's 16-speed full power shift transmission allows for smooth gear changes under load, optimizing productivity and reducing operator fatigue. Its 32-speed creeper option is advantageous for precise low-speed operations, such as tilling or planting in confined spaces. However, operators may need to familiarize themselves with the extensive gear selection, which can present a learning curve.
| Description | 16-speed full power shift/32-speed creeper |
TRANSMISSION 1
The Challenger 55's full power shift transmission offers seamless gear transitions, enhancing operational efficiency in diverse field conditions. With 16 forward and 9 reverse gears, it allows for precise speed control and maneuverability, making it ideal for heavy-duty applications such as plowing and tilling. However, operators should be aware of the potential for increased maintenance demands typical of power shift systems due to their complexity.
| Type | full power shift |
| Gears | 16 forward and 9 reverse |
TRANSMISSION 2
The Challenger 55 tractor features a creeper transmission system, providing enhanced low-speed control for tasks like tilling or precision planting, making it ideal for specialized applications. With 32 forward and 18 reverse gears, operators can achieve optimal performance across varied terrains and operating conditions, although this complexity may require additional operator training. The increased gear range offers a significant advantage in versatility but could pose challenges in maintenance and may lead to higher operational costs.
| Type | creeper |
| Gears | 32 forward and 18 reverse |
MECHANICAL
The Challenger 55 tractor features a crawler chassis, providing enhanced traction and stability in challenging terrain, which is advantageous for heavy tillage or road construction applications. Its differential power steering allows for smooth maneuverability, while the wet disc brakes ensure reliable stopping power, even under heavy load. With a 16-speed full power shift and an optional 32-speed creeper transmission, operators can achieve optimal efficiency across various field conditions, making it suitable for both high-speed transport and precise low-speed applications.
| Chassis | crawler |
| Steering | differential power |
| Brakes | wet disc |
| Cab | Cab standard with air-conditioning. |
| Transmissions | 16-speed full power shift/32-speed creeper |
HYDRAULICS
| Type | variable-displacement load-sensing pressure-compensated |
| Pressure | 2750 psi/189.6 bar |
| Valves | 3 or 4 |
| Pump flow | 31.2 gpm/118.1 lpm/55 gpm/208.2 lpm . |
TRACTOR HITCH
| Rear Type | III/II |
| Control | draft control |
| Rear lift | 12500 lbs/5670 kg/15000 lbs/6804 kg . |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | electro-hydraulic wet disc |
| Rear RPM | 1000 (1.75) |
| Engine RPM | 1000@1900 |
CHALLENGER 55 TRACKS
| Size | 18-inch track |
| Option | 16-inch track/20-inch track/25-inch track/32-inch track |
DIMENSIONS
| Wheelbase | 86 inches/218 cm |
| Length | 211 inches/535 cm |
| Width | 91 inches/231 cm |
| Height (cab) | 120 inches/304 cm |
| Height (exhaust) | 125 inches/317 cm |
| Weight | 26000 lbs/11793 kg |
| Gauge | 60/68/72/76/80/88/90 inches/152/172/182/193/203/223/228 cm |
DIMENSIONS & TRACKS
| Wheelbase | 86 inches/218 cm |
| Weight | 26000 lbs/11793 kg |
| Description | 18-inch track |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Battery volts | 12 |