| Manufacturer | Long |
| Price | - |
| Model | 550 |
| Equipment Type | Utility Tractors |
| Factory | Brasov, Romania |
NEBRASKA TRACTOR TEST 1109 2
| Description | Diesel 8-speed 2WD September 21 - October 2, 1972 Link: Nebraska Tractor Test 1109 file PTO performance Drawbar performance Gear 5 used for power test Gear 2 used for pull test |
| Power at rated engine speed | 53.61 hp / 40.0 kW |
| Fuel use | 3.6 gal / hour/ 13.6 l/hour |
| Power at rated PTO speed | 47.66 hp / 35.5 kW |
| Max power | 46.73 hp / 34.8 kW |
| Max pull | 6,944 lbs / 3149 kg |
LONG 550 POWER
| Engine | 60 hp / 44.7 kW |
| Drawbar (claimed) | 46.7 hp / 34.8 kW |
| PTO (claimed) | 53.7 hp / 40.0 kW |
| Drawbar (tested) | 46.73 hp / 34.8 kW |
| PTO (tested) | 53.61 hp / 40.0 kW |
ENGINE DETAIL
The Long 550 tractor features a robust 4-cylinder diesel engine with direct injection, delivering 60 hp at a rated RPM of 2400, making it suitable for moderate agricultural tasks. Its 17:1 compression ratio enhances fuel efficiency, while the liquid cooling system, with a coolant capacity of 14.7 quarts, ensures optimal operating temperatures to prevent overheating during prolonged use. However, operators should be aware of the 11-quart oil capacity, as regular maintenance is essential for engine longevity and performance.
| Description | Uzina diesel 4-cylinder liquid-cooled |
| Displacement | 190.7 ci / 3.1 L |
| Bore/Stroke | 3.74x4.33 inches / 95 x 110 mm |
| Power | 60 hp / 44.7 kW |
| Fuel system | direct injection |
| Compression | 17:1 |
| Rated RPM | 2400 |
| Starter volts | 12 |
| Oil capacity | 11 qts / 10.4 L |
| Coolant capacity | 14.7 qts / 13.9 L |
LONG 550 ENGINE
The Long 550 tractor features a robust 3.1L 4-cylinder diesel engine, providing solid torque and efficiency for various agricultural tasks. With a fuel tank capacity of 14.25 gallons (53.9 liters), it allows for extended operating hours between refueling, which is beneficial for larger farmland operations. However, the relatively smaller engine size may limit power output for heavy-duty applications, necessitating consideration for specific tasks and load requirements.
| Description | Uzina 3.1L 4-cyl diesel |
| Fuel tank | 14.25 gal / 53.9 L |
TRANSMISSION
The Long 550 tractor features an 8 forward and 2 reverse gear configuration, providing versatile operational capabilities for various agricultural tasks while enhancing maneuverability. A 279.4mm dry disc clutch offers durability but may require more frequent adjustments compared to a hydraulic clutch system. The oil capacity of 18 quarts (17.0 L) indicates sufficient lubrication for optimal performance, but regular checks and changes are critical to prevent overheating and ensure longevity.
| Type | gear |
| Gears | 8 forward and 2 reverse |
| Clutch | 279.4mm dry disc |
| Oil capacity | 18 qts / 17.0 L |
MECHANICAL
The Long 550 tractor's 4x2 2WD chassis provides a lightweight configuration suitable for level terrain, optimizing fuel efficiency but limiting traction in adverse conditions. The manual power-assisted steering enhances operator control, though it may require more physical effort compared to hydrostatic systems. Its 8-speed transmission offers versatility in speed selection, making it suitable for tasks ranging from light tilling to hauling, though independent contracting band brakes can pose challenges in terms of maintenance and may not provide as quick stopping power as disc brakes in hilly terrains.
| Chassis | 4x2 2WD |
| Steering | manual power assist |
| Brakes | independent contracting band |
| Cab | Open operator station. |
| Transmission | 8-speed gear |
HYDRAULICS
| Type | open center |
| Pressure | 2133 psi / 147.1 bar |
| Pump flow | 5.75 gpm / 21.8 lpm |
TRACTOR HITCH
| Rear Type | II/I |
| Rear lift | 2660 lbs / 1206 kg |
POWER TAKE-OFF (PTO)
| Rear RPM | 540 (1.375) |
| Engine RPM | 540@1970 |
LONG 550 TIRES
The Long 550 tractor equipped with agricultural front tires (7.50-16) and rear tires (14.9x28 or 16.9x28) provides a balance of maneuverability and traction for farm operations. Its rear tire options allow for flexibility in load capacity and stability, optimizing performance in both fieldwork and transport scenarios. However, the tire sizes may limit compatibility with certain attachments, necessitating careful evaluation of equipment to ensure efficient operation.
| Ag front | 7.50-16 |
| Ag rear | 14.9x28 / 16.9x28 |
DIMENSIONS
| Wheelbase | 81.5 inches / 207 cm |
| Operating weight | 4570 lbs / 2072 kg |
| Ballasted weight | 9110 lbs / 4132 kg |
| Front tread | 52 to 79 inches / 132 to 200 cm |
| Rear tread | 47.25 to 74.7 inches / 120 to 189 cm |
DIMENSIONS & TIRES
The Long 550 tractor features a compact wheelbase of 81.5 inches, enhancing maneuverability for tasks in tight spaces. Weighing 4570 lbs, it provides good stability, particularly suited for medium-duty applications like tilling and plowing. However, the tire sizes indicate potential challenges with traction in muddy conditions, necessitating careful consideration of soil type and operating environment to maximize performance.
| Wheelbase | 81.5 inches / 207 cm |
| Weight | 4570 lbs / 2072 kg |
| Front tire | 7.50-16 |
| Rear tire | 18.4-28 |
ELECTRICAL
| Ground | negative |
| Battery volts | 12 |