Iseki SX55
The Iseki SX55 is a tractor produced by Iseki. It is equipped with a 169.1 ci 2.8 L engine. The listed engine power is Diesel (listed): 50 hp / 37.3 kW. Transmission: 24 forward and 8 reverse. Operating weight: 3053 lbs 1384 kg.
Engine Power
Diesel (listed): 50 hp / 37.3 kW
Fuel & Capacities
18.5 gal
70.0 L
Transmission
24 forward and 8 reverse
Operating Weight
3053 lbs
1384 kg
Overview
 | 1985 - 1990
SX SeriesUtility tractor
SX Series
Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Iseki |
Utility tractor | |
Built in Japan | |
Iseki SX55 Engine | |
|---|---|
Isuzu 2.8L 4-cyl diesel | |
Fuel tank | 18.5 gal
70.0 L |
Engine details ...  | |
Iseki SX55 Power | |
|---|---|
Engine | 50 hp
37.3 kW |
Mechanical | |
|---|---|
Two- or four-wheel drive | |
Power steering | |
Wet disc brakes | |
Four-post ROPS with canopy. |
Hydraulics | |
|---|---|
Pump flow | 9.25 gpm
35.0 lpm |
Tractor hitch | |
|---|---|
Rear Type | II |
Control | position and draft control |
Rear lift | 5291 lbs
2399 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Clutch | hydraulic wet disc |
Rear PTO Type | 540 (1.375) |
Engine RPM | 540@1727 |
1000@2000 | |
Dimensions & Tires | |
|---|---|
Wheelbase | 85 inches
215 cm |
Weight | 3053 lbs
1384 kg |
Front tire | 8.3-20 |
Rear tire | 14.9-28 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
 | |
SX55 Tractor 4WD published in 1985, by Iseki |
Engine
Engine Detail — 169.1 ci / 2.8 L Diesel
Manufacturer | Isuzu 4JB1 |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 169.1 ci
2.8 L |
Bore/Stroke | 3.66x4.02 inches
93 x 102 mm |
Power | 50 hp
37.3 kW |
Fuel system | direct injection |
Air cleaner | dry |
Pre-heating | glow plugs |
Rated RPM | 2200 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission options | |
|---|---|
12-speed syncromesh | |
24-speed creeper |
Transmission — 12 forward and 4 reverse syncromesh
Type | syncromesh |
Gears | 12 forward and 4 reverse |
Clutch | 330mm dry disc |
Transmission — 24 forward and 8 reverse creeper
Type | creeper |
Gears | 24 forward and 8 reverse |
Clutch | 330mm dry disc |
Dimensions
Iseki SX55 Tires | |
|---|---|
Standard tires (ag) | Front: 8.3-20. Rear: 14.9-28 |
Dimensions | |
|---|---|
Wheelbase | 85 inches
215 cm |
Length | 140.2 inches
356 cm |
Height (exhaust) | 74.2 inches
188 cm |
Weight | 3053 lbs
1384 kg |
Ground clearance | 12.4 inches
31 cm |
Front tread | 53.2 to 60.2 inches
135 to 152 cm |
Rear tread | 50.4 to 69.7 inches
128 to 177 cm |
Photos
Iseki SX55 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Iseki SX55 based on its 50 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
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 | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
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 Iseki SX55.
Estimated Continuous Field Runtime: 7.1 hrs
Approximately 7.1 hours of continuous field operation at ~75% rated power on a full tank (18.5 gal / 70 L).
Estimated 75% Load Fuel Burn~2.6 gal/hr (9.8 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
Iseki SX55 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Iseki SX55.
Converted Equivalents:
Horsepower (HP)50 hp
Kilowatts (kW)37.3 kW
Metric Horsepower (PS / CV)50.7 PS
Direct Competitor Comparison
Compare Iseki SX55 against same-era industry alternatives in the same horsepower class.
Current Model
Iseki
Iseki SX55
Engine Power:Diesel (listed): 50 hp / 37.3 kW
★ Baseline Reference
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