AGCO ST55
The AGCO ST55 is a tractor produced by Agco. It is equipped with a 173 ci 2.8 L engine. The listed engine power is Diesel (gross): 55.6 hp / 41.5 kW. Transmission: 12 forward and reverse. Operating weight: 4417 lbs 2003 kg.
Engine Power
Diesel (gross): 55.6 hp / 41.5 kW
Fuel & Capacities
12.7 gal
48.1 L
Transmission
12 forward and reverse
Operating Weight
4417 lbs
2003 kg
Overview
 | 2003 - 2004
ST SeriesCompact Utility tractorIseki built
ST Series
Compact Utility tractor
Iseki built |
|---|
Production | |
|---|---|
Distributor | AGCO |
Manufacturer | Iseki |
Compact Utility tractor | |
Built in Matsuyama, Japan | |
AGCO ST55 Engine | |
|---|---|
Iseki 2.8L 4-cyl diesel | |
Fuel tank | 12.7 gal
48.1 L |
Engine details ...  | |
AGCO ST55 Transmission | |
|---|---|
12-speed synchro shuttle | |
Transmission details ...  |
AGCO ST55 Power | |
|---|---|
Engine (gross) | 55.6 hp
41.5 kW |
PTO (claimed) | 45.6 hp
34.0 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Power steering | |
Wet disc brakes | |
Two-post folding ROPS. |
Hydraulics | |
|---|---|
Type | open center |
Pressure | 2276 psi
156.9 bar |
Pump flow | 11.4 gpm
43.1 lpm |
Total flow | 17.3 gpm
65.5 lpm |
Steering flow | 5.9 gpm
22.3 lpm |
Tractor hitch | |
|---|---|
Rear Type | I |
Control | position control |
Rear lift (at ends) | 3086 lbs
1399 kg |
Rear Arms | telescopic link ends |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Clutch | electro-hydraulic |
Rear PTO Type | 540 (1.375) |
Dimensions & Tires | |
|---|---|
Wheelbase | 78.9 inches
200 cm |
Weight | 4417 lbs
2003 kg |
Front tire | 7.5-16 |
Rear tire | 13.6-28 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
 | |
ST Series published in 2004, by AGCO | |
ST55 - The most powerful AGCO compact tractor published in 2003 |
Engine
Engine Detail — 173 ci / 2.8 L Diesel
Manufacturer | Iseki |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 173 ci
2.8 L |
Power (gross) | 55.6 hp
41.5 kW |
Fuel system | indirect injection |
Rated RPM | 2500 |
Starter volts | 12 |
Transmission
Transmission — 12 forward and reverse synchro shuttle
Type | synchro shuttle |
Gears | 12 forward and reverse |
Clutch | dry disc |
Dimensions
AGCO ST55 Tires | |
|---|---|
Ag front | 7.5-16 |
Ag rear | 13.6-28 |
Ag front | 35x12.00-16.5 |
Ag rear | 14.9-28 |
Lawn/turf front | 29x12.00-15 |
Lawn/turf rear | 475/65D-20 |
Industrial front | 10x16.5 |
Industrial rear | 17.5Lx24 |
Dimensions | |
|---|---|
Wheelbase | 78.9 inches
200 cm |
Length | 137 inches
347 cm |
Width | 72.7 inches
184 cm |
Height (ROPS) | 98.8 inches
250 cm |
Height (Folded ROPS) | 75.5 inches
191 cm |
Shipping weight | 4417 lbs
2003 kg |
Ground clearance | 12.8 inches
32 cm |
Front tread | 54.5 inches
138 cm |
Rear tread | 57 to 62 inches
144 to 157 cm |
Photos
AGCO ST55 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Agco ST55 based on its 55.6 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 | 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 Agco ST55.
Estimated Continuous Field Runtime: 4.4 hrs
Approximately 4.4 hours of continuous field operation at ~75% rated power on a full tank (12.7 gal / 48.1 L).
Estimated 75% Load Fuel Burn~2.9 gal/hr (10.9 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
Agco ST55 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Agco ST55.
Converted Equivalents:
Horsepower (HP)55.6 hp
Kilowatts (kW)41.5 kW
Metric Horsepower (PS / CV)56.4 PS
Direct Competitor Comparison
Compare AGCO ST55 against same-era industry alternatives in the same horsepower class.
Current Model
Agco
AGCO ST55
Engine Power:Diesel (gross): 55.6 hp / 41.5 kW
★ Baseline Reference
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