AGCO ST28A
The AGCO ST28A is a tractor produced by Agco. It is equipped with a 89.3 ci 1.5 L engine. The listed engine power is Diesel (gross): 28.4 hp / 21.2 kW. Transmission: gear. Operating weight: 2205 lbs 1000 kg.
Engine Power
Diesel (gross): 28.4 hp / 21.2 kW
Fuel & Capacities
Diesel
Transmission
gear
Operating Weight
2205 lbs
1000 kg
Overview
 | 2005 - 2008
ST-A SeriesCompact Utility tractorIseki built
ST-A Series
Compact Utility tractor
Iseki built |
|---|
Production | |
|---|---|
Distributor | AGCO |
Manufacturer | Iseki |
Compact Utility tractor | |
Built in Matsuyama, Japan | |
AGCO ST28A Engine | |
|---|---|
Iseki 1.5L 3-cyl diesel | |
Engine details ...  |
AGCO ST28A Power | |
|---|---|
Engine (gross) | 28.4 hp
21.2 kW |
Hydro PTO (claimed) | 22.3 hp
16.6 kW |
Gear PTO (claimed) | 24.5 hp
18.3 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Differential lock | mechanical rear |
Power steering | |
Wet disc brakes | |
Two-post folding ROPS. | |
Hydraulics | |
|---|---|
Type | open center |
Pump flow | 7.4 gpm
28.0 lpm |
Tractor hitch | |
|---|---|
Rear Type | I |
Rear lift (at ends) | 2425 lbs
1099 kg |
Rear lift (at 24"/610mm) | 1610 lbs
730 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | transmission (gear) |
independent (hydrostatic) | |
Rear PTO Type | 540 (1.375) |
Mid PTO | independent OptOptional |
Mid PTO Type | 2000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 65.5 inches
166 cm |
Weight | 2205 lbs
1000 kg |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
 | |
ST Series published in 2004, by AGCO* | |
*Publication contains known errors. |
Engine
Engine Detail — 89.3 ci / 1.5 L Diesel
Manufacturer | Iseki |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled |
Displacement | 89.3 ci
1.5 L |
Bore/Stroke | 3.39x3.30 inches
86 x 84 mm |
Power (gross) | 28.4 hp
21.2 kW |
Rated RPM | 2500 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission options | |
|---|---|
hydrostatic | |
9-speed |
Transmission — infinite forward and reverse hydrostatic
Type | hydrostatic |
Gears | infinite forward and reverse |
Transmission — gear
Transmission | gear |
Gears | 9 forward and 3 reverse |
Dimensions
AGCO ST28A Tires |
|---|
Dimensions | |
|---|---|
Wheelbase | 65.5 inches
166 cm |
Length | 114.6 inches
291 cm |
Width | 49.6 inches
125 cm |
Height | 79 inches
200 cm |
Shipping weight | 2205 lbs
1000 kg |
Attachments
Attachment overview | |
|---|---|
60" mid-mount mower deck | |
72" mid-mount mower deck | |
Front-end loader | |
Backhoe |
AGCO SH15A Backhoe | |
|---|---|
Backhoe type | AGCO SH15A Backhoe |
Digging depth | 78 inches
198 cm |
Reach from pivot | 102 inches
259 cm |
Swing Arc | 180° |
Bucket force | 2400 lbs
1088 kg |
Dipperstick force | 1450 lbs
657 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for Agco ST28A based on its 28.4 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 1 to 2 Bottom (12")1 - 2 铧 (30 cm) | Light Duty | Ideal for garden plots and light sandy soil. |
Rotary Cutter / MowerMowing & Clearing | 5 ft (60 in)1.5 m | Medium Duty | Pasture maintenance and weeds up to 1.5" diameter. |
Rotary TillerSeedbed Prep | 54 to 60 in135 - 150 cm | Medium Duty | Thorough seedbed preparation in orchards and vegetable plots. |
Disc HarrowSecondary Tillage | 5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片) | Light Duty | Small acreage soil break-up and secondary aeration. |
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 ST28A.
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 ST28A Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Agco ST28A.
Converted Equivalents:
Horsepower (HP)28.4 hp
Kilowatts (kW)21.2 kW
Metric Horsepower (PS / CV)28.8 PS
Direct Competitor Comparison
Compare AGCO ST28A against same-era industry alternatives in the same horsepower class.
Current Model
Agco
AGCO ST28A
Engine Power:Diesel (gross): 28.4 hp / 21.2 kW
★ Baseline Reference
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