Long 550
The Long 550 is a tractor produced by Long. It is equipped with a 190.7 ci 3.1 L engine. The listed engine power is Diesel (listed): 60 hp / 44.7 kW. Transmission: 8 forward and 2 reverse. Operating weight: 4570 lbs 2072 kg.
Engine Power
Diesel (listed): 60 hp / 44.7 kW
Fuel & Capacities
14.25 gal
53.9 L
Transmission
8 forward and 2 reverse
Operating Weight
4570 lbs
2072 kg
Overview
 | 1972 - 1975
Utility tractorUTB/Universal built
Utility tractor
UTB/Universal built |
|---|
Production | |
|---|---|
Distributor | Long |
Manufacturer | UTB/Universal |
Utility tractor | |
Built in Brasov, Romania | |
Long 550 Engine | |
|---|---|
Uzina 3.1L 4-cyl diesel | |
Fuel tank | 14.25 gal
53.9 L |
Engine details ...  | |
Long 550 Transmission | |
|---|---|
8-speed gear | |
Transmission details ...  |
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 |
Performance test details ...  | |
Mechanical | |
|---|---|
Two-wheel drive | |
Steering | manual |
power assist OptOptional | |
Independent contracting band brakes | |
Open operator station. | |
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 PTO Type | 540 (1.375) |
Engine RPM | 540@1970 |
Dimensions & Tires | |
|---|---|
Wheelbase | 81.5 inches
207 cm |
Weight | 4570 lbs
2072 kg |
Front tire | 7.50-16 |
Rear tire | 18.4-28 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Engine
Engine Detail — 190.7 ci / 3.1 L Diesel
Manufacturer | Uzina |
Fuel Type | Diesel |
Configuration | 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 |
Transmission
Transmission — 8 forward and 2 reverse gear
Type | gear |
Gears | 8 forward and 2 reverse |
Clutch | 279.4mm dry disc |
Oil capacity | 18 qts
17.0 L |
 | |
Dimensions
Long 550 Tires | |
|---|---|
Ag front | 7.50-16 |
Ag rear | 18.4-28 |
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 |
Tests
Nebraska Tractor Test 1109 | |
|---|---|
Diesel 8-speed 2WD
September 21 - October 2, 1972
Link: Nebraska Tractor Test 1109 file | |
PTO performance | |
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 |
Fuel use | 3.2 gal/hour
12.1 l/hour |
Drawbar performance | |
Max power | 46.73 hp
34.8 kW |
Fuel use | 3.6 gal/hour
13.6 l/hour |
Gear 5 used for power test. | |
Max pull | 6,944 lbs
3149 kg |
Gear 2 used for pull test. | |
Photos
Long 550 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Long 550 based on its 60 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | 4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机 | Heavy Duty | Silage and dry hay; 540 RPM PTO with slip-clutch. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Long 550.
Estimated Continuous Field Runtime: 4.6 hrs
Approximately 4.6 hours of continuous field operation at ~75% rated power on a full tank (14.3 gal / 53.9 L).
Estimated 75% Load Fuel Burn~3.1 gal/hr (11.8 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Long 550 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Long 550.
Converted Equivalents:
Horsepower (HP)60 hp
Kilowatts (kW)44.7 kW
Metric Horsepower (PS / CV)60.8 PS
Direct Competitor Comparison
Compare Long 550 against same-era industry alternatives in the same horsepower class.
Current Model
Long
Long 550
Engine Power:Diesel (listed): 60 hp / 44.7 kW
★ Baseline Reference