| Manufacturer | AGCO |
| Price | - |
| Model | ST55 |
| Equipment Type | Compact Utility Tractors |
| Factory | Matsuyama, Japan |
AGCO ST55 POWER
| Engine (gross) | 55.6hp / 41.5kW |
| PTO (claimed) | 45.6hp / 34.0kW |
ENGINE DETAIL
The AGCO ST55 tractor is powered by a 2.8L Iseki diesel 4-cylinder engine, producing 55.6 hp at a rated speed of 2500 RPM, which offers a good balance of power for light to medium agricultural tasks. Its indirect injection fuel system may provide better fuel atomization and efficiency, though it can be less responsive compared to direct injection systems. At 12 starter volts, the electrical system is standard, which ensures compatibility with common agricultural equipment but may require attention in cold weather conditions for reliable starting.
| Description | Iseki diesel 4-cylinder liquid-cooled |
| Displacement | 173ci / 2.8L |
| Power (gross) | 55.6hp / 41.5kW |
| Fuel system | indirect injection |
| Rated RPM | 2500 |
| Starter volts | 12 |
AGCO ST55 ENGINE
The AGCO ST55 features a robust Iseki 2.8L 4-cylinder diesel engine, providing efficient fuel combustion for better torque delivery during operations. With a 12.7-gallon (48.1L) fuel tank, it offers ample capacity for extended fieldwork, reducing downtime for refueling. However, be aware that the relatively smaller engine displacement may limit power output in more demanding tasks compared to higher-capacity engines in its class.
| Description | Iseki 2.8L 4-cyl diesel |
| Fuel tank | 12.7gal / 48.1L |
TRANSMISSION
The AGCO ST55 tractor features a synchro shuttle transmission with 12 forward and reverse gears, enhancing maneuverability in tight spaces and providing versatility in various applications. The dry disc clutch offers reliable engagement but may require more frequent maintenance compared to wet clutches, especially in heavy-duty use scenarios. This configuration is advantageous for tasks requiring frequent directional changes, such as loader work or transport operations.
| Type | synchro shuttle |
| Gears | 12 forward and reverse |
| Clutch | dry disc |
MECHANICAL
The AGCO ST55 features a 4x4 MFWD configuration, enhancing traction and maneuverability in various field conditions, making it ideal for farming tasks that require stability on uneven terrain. Its hydrostatic power steering allows for ease of handling and reduced operator fatigue during long hours of operation. However, the two-post foldable ROPS may offer limited protection compared to full cab systems, which could be a safety consideration in certain environments.
| Chassis | 4x4 MFWD 4WD |
| Steering | hydrostatic power |
| Brakes | wet disc |
| Cab | Two-post foldable ROPS |
| Transmission | 12-speed synchro shuttle |
HYDRAULICS
| Type | open center |
| Pressure | 2276psi / 156.9bar |
| Pump flow | 11.4gpm / 43.1lpm |
| Total flow | 17.3gpm / 65.5lpm |
| Steering flow | 5.9gpm / 22.3lpm |
TRACTOR HITCH
| Rear Type | I |
| Control | position control |
| Rear lift (at ends) | 3086lbs / 1399kg |
| Rear Arms | telescopic link ends |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | electro-hydraulic |
| Rear RPM | 540 |
AGCO ST55 TIRES
The AGCO ST55 tractor features versatile tire options tailored for various applications; the agricultural front and rear tires (35x12.00-16.5 and 14.9-28) provide superior traction in field conditions, while the lawn/turf configurations (29x12.00-15 and 475/65D-20) optimize ground protection and maneuverability on delicate surfaces. The industrial tire choices (10x16.5 front and 17.5Lx24 rear) are designed for enhanced stability and load-bearing capabilities on construction sites. In scenarios requiring adaptability, the ability to switch tire types ensures performance across diverse tasks, although careful consideration of load specifications is essential to avoid potential overstress on the drivetrain.
| 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 | 78.9inches / 200cm |
| Length | 137inches / 347cm |
| Width | 72.7inches / 184cm |
| Height (ROPS) | 98.8inches / 250cm/75.5inches / 191cm (folded) |
| Shiping weight | 4417lbs / 2003kg |
| Ground clearance | 12.8inches / 32cm |
| Front tread | 54.5inches / 138cm |
| Rear tread | 57 to 62inches / 144to 157 cm |
DIMENSIONS & TIRES
The AGCO ST55 tractor features a wheelbase of 78.9 inches, enhancing stability during operations, especially when navigating uneven terrain. Weighing 4,417 lbs (2,003 kg), it strikes a balance between maneuverability and ground traction, which is beneficial for plowing and towing tasks. However, the front and rear tire sizes—7.5-16 and 13.6-28, respectively—limit its ability to operate in particularly soft or muddy conditions, potentially compromising performance in wet fields.
| Wheelbase | 78.9inches / 200cm |
| Weight | 4417lbs / 2003kg |
| Front tire | 7.5-16 |
| Rear tire | 13.6-28 |
AGCO SL48 LOADER
| Height (to pin) | 110.5inches / 280cm |
| Clearance, dumped bucket | 88.5inches / 224cm |
| Dump reach | 26.2inches / 66cm |
| Dump angle | 32.7° |
| Reach at ground | 67inches / 170cm |
| Rollback angle | 17° |
| Breakout force (bucket) | 3061lbs / 1388kg |
| Lift to full height (at pin) | 1932lbs / 876kg |
| Bucket width | 72inches / 182cm |
| Raise time to height | 3.5 s |
| Bucket dump time | 1.9 s |
| Lowering time | 2.3 s |
| Rollback time | 1.2 s |
ELECTRICAL
| Ground | negative |
| Battery volts | 12 |