AGCO RT155A Tractor 185 hp Specifications, Performance, and Features
AGCO RT155A Tractor 185 hp
The AGCO RT155A is a powerful row-crop tractor made for demanding farm work. This agricultural machine stands out for its strong engine, solid build, and detailed engineering.
Production & Identification
The AGCO RT155A tractor was part of the AGCO “RT-A” series of row-crop tractors. Production for this model started in 2006 and continued until about 2011.
The RT155A was designed for large-scale farming operations needing reliable horsepower and advanced features. This tractor is equipped with a 185 hp engine, making it well-suited for heavy tillage, planting, and hauling tasks.
It was built with modern electronic controls to boost efficiency and operator comfort. Durable construction and a prominent frame help identify the RT155A, as does its streamlined hood and side panel decals displaying the model designation.
Key identifiers also include a 6.6L SisuDiesel engine and a CVT (continuously variable transmission), which were core selling points. You can tell this tractor apart from earlier or smaller AGCO models by the PowerMaxx or Dyna-VT CVT transmission badge and distinctive AGCO orange and gray paint.
Manufacturer / Brand
The RT155A was built by AGCO Corporation, an American agricultural giant. AGCO is known for producing tractors and farm equipment under several brands over the years, such as Massey Ferguson, Challenger, and Fendt.
The RT155A carried the AGCO brand name and logo throughout its production run. With a global presence and a focus on innovation, AGCO has become a leader in large farming machinery.
The RT155A fits into AGCO’s mission to supply reliable, efficient machines that help farmers increase productivity. The tractor’s features represent years of engineering knowledge in row-crop tractor design.
AGCO has a support network for spare parts, servicing, and warranties. This helps you maintain your RT155A under the same standards set during its manufacturing.
The company provided manuals, training, and updates for the RT155A series during its time on the market.
Model Number / Series
The AGCO RT155A belongs to the RT-A series, which includes several models ranging from about 120 to 200 horsepower. The RT155A sits near the upper end of this lineup, making it a popular choice for mid-to-large farms needing robust equipment.
The model number “RT155A” can be broken down as:
- RT = Row-crop Tractor
- 155 = Approximate engine horsepower (185 hp rated, but 155 hp PTO claimed)
- A = Indicates “A” series upgrade
Other tractors in this series include the RT120A, RT135A, and RT180A. These were built with many similar features but different power outputs.
The RT155A stands out for its balance of power, price, and features within the series. AGCO used this numbering method to help customers easily distinguish between different models and tractor capabilities.
You can look at decals and identification plates to confirm the specific RT-A series and model number.
Factory of Manufacture
The AGCO RT155A was primarily manufactured at AGCO’s Hesston, Kansas, USA plant. This factory has produced some of AGCO’s major tractor and harvester lines for decades and follows strict quality control standards.
Hesston is an important site in AGCO’s North American manufacturing system, known for its skilled workforce and advanced assembly lines. Nearly all AGCO RT-A series tractors for the U.S. and Canadian markets came from this location.
You can find original RT155A build records and technical documents referencing the Hesston assembly line. Components like engines and transmissions often arrived from specialized facilities, but final tractor assembly and testing happened in Hesston.
Years Produced
AGCO started producing the RT155A in 2006 and ended main production in 2011. This model marked AGCO’s commitment to providing modern, high-horsepower row-crop tractors during these years.
Model years can be identified by serial numbers and specific mechanical updates. For example, early 2006 models may have fewer software features or older display panels, while 2010–2011 units could carry small upgrades in controls or emissions components.
The 2006–2011 span gave you multiple model-year choices, some coinciding with new farm technology releases and changing Tier emissions requirements. You are likely to find used RT155A tractors on the market from any year within this period.
Original List Price (Launch Year)
When the AGCO RT155A launched, its original list price was approximately $85,000, based on dealer and market sources from 2006–2007. This price reflected its position as a mid-to-high horsepower row-crop tractor, equipped with advanced features for its time.
The price included the SisuDiesel engine, CVT transmission, and important options like cab air conditioning and hydraulic packages. Some units could cost more if ordered with specialty tires, guidance systems, or luxury cab upgrades.
Compared to other similar tractors in its class, the RT155A’s list price put it in competition with brands like John Deere and Case IH. Owners could finance the tractor or lease it through AGCO-approved dealers, spreading out costs over several years of use.
Serial-Number Location
You can find the serial number of the AGCO RT155A stamped onto a metal plate on the tractor’s frame. Specifically, look along the right side of the engine block, near the front axle or just below the cab entrance step.
The location makes it easy for service teams and owners to verify authenticity and order the right parts. The serial number contains digits that tell you the plant, year of manufacture, and production unit.
Always check the serial number before buying used to confirm the year, model, and whether the tractor matches its paperwork. If the plate is missing or unreadable, you should look for matching numbers stamped into the frame or on key components.
This helps you confirm the true identity and history of the tractor.
AGCO RT155A Tractor 185 hp – Specification Table
| Topic | Details |
|---|---|
| Production Years | 2006 – 2011 |
| Manufacturer / Brand | AGCO Corporation |
| Model Number / Series | RT155A, part of RT-A Series (RT120A, RT135A, RT155A, RT180A) |
| Engine Power | 185 hp engine (6.6L SisuDiesel, 6-cyl turbo, electronic common rail) |
| Main Factory | Hesston, Kansas, USA |
| Original List Price | ~$85,000 at launch |
| Serial Number Location | Metal plate on right engine frame, near front axle or below cab entrance step |
| Transmission | PowerMaxx CVT (Continuously Variable Transmission) |
| Role | Row-crop tractor for large-scale farming, tillage, planting, and transport |
| Key Identification | Distinctive AGCO orange/gray paint, RT155A decals, PowerMaxx/Dyna-VT badge, SisuDiesel engine |
Engine Specifications
The AGCO RT155A tractor is known for its powerful 185 hp engine, efficiency, and reliability. It uses a well-designed diesel engine that is built for heavy agricultural tasks.
Engine Make & Model
You will find a Sisu Diesel engine under the hood of the AGCO RT155A. The engine is a six-cylinder model, installed in a vertical inline layout.
Sisu engines are favored for their performance in agricultural equipment. The engine model for this tractor is typically a 6.6L Sisu Diesel, recognized for delivering solid torque and consistent horsepower.
It uses a turbocharger and an air-to-air intercooler to improve efficiency and maintain cooler operating temperatures. The turbo and intercooler work together to provide more power and better fuel economy.
This engine is built to handle tough farm conditions and provides the consistent energy needed for demanding jobs. The lengthwise crankshaft design reduces stress on the engine and improves longevity.
Fuel Type & Emissions Tier
The AGCO RT155A runs on diesel fuel. The common rail fuel injection system allows for more control over fuel delivery, helping you maximize combustion efficiency.
This type of system also gives you a cleaner burn, which can result in lower fuel consumption and fewer emissions. The tractor uses a dry cartridge air cleaner to help keep the engine’s air intake free from dust and debris.
In terms of emissions, the engine is built to meet modern agricultural standards. While exact emissions tier details can vary depending on the production year, it is generally compliant with at least EPA Tier 3/Stage IIIA standards for off-road engines of this size.
Cylinders / Displacement
There are six cylinders in the RT155A engine, laid out in a straight (inline) configuration. Six-cylinder engines are known for smoother running compared to four-cylinder models and provide higher peak torque.
The engine displacement is 6.6 liters (402.8 cubic inches). Displacement is a key factor in how much air/fuel the engine can move and, ultimately, how much power it can produce.
The larger 6.6L displacement helps you handle heavy work, such as pulling large implements or towing heavy equipment. An inline-six arrangement usually means less vibration, which is helpful for operator comfort and engine life.
Rated Horsepower (Gross & Net)
The AGCO RT155A features a rated gross engine horsepower of 185 hp (equivalent to about 138.0 kW). This rating is measured at the engine’s flywheel, before power is lost to driveline operations.
The PTO horsepower, which is the power available for operating implements through the Power Take-Off, is typically 155 hp. The difference between engine and PTO horsepower reflects the mechanical losses in the transmission.
Test data has shown PTO horsepower can reach up to 190 hp under certain operating conditions. These ratings give you a clear idea of the available power for both driving and running attachments used in the field.
Peak Torque (Nm @ rpm)
Peak torque is a critical factor in tractor performance. The AGCO RT155A’s engine is capable of producing high torque at relatively low RPMs, making it well-suited for heavy-duty fieldwork.
Exact torque numbers for this model are around 620 Nm to 670 Nm, typically around 1,500-1,600 rpm. The broad torque curve ensures you get strong pulling power even if engine speed drops under load.
A high torque at low rpm makes your tractor more effective in tough soil conditions or when climbing hills with a heavy trailer attached.
Compression Ratio
The compression ratio for this Sisu Diesel 6.6L engine is about 17:1. This high compression ratio is standard for diesel engines, making combustion more efficient.
A higher compression ratio increases the pressure and temperature inside the cylinder, giving you more energy (and therefore, more power) from each drop of diesel fuel. It also helps the engine start better in cold conditions.
This level of compression is balanced for durability, power, and long-term reliability. It does not require special or high-cost diesel blends.
Cooling System & Capacity
The AGCO RT155A uses a liquid cooling system. It is designed to handle the higher temperatures produced by a turbocharged diesel engine.
A standard radiator, coolant pump, thermostat, and hoses work together to keep engine temperatures in check. The cooling system’s total capacity is about 18 to 22 liters (approximately 4.8 to 5.8 gallons), which is typical for engines of this size and power rating.
Liquid cooling helps prevent overheating, especially when using the tractor for extended hours under full load. Keeping the engine cool ensures consistent performance and longer engine life.
AGCO RT155A Engine Specifications Table
| Feature | Specification / Details |
|---|---|
| Engine Make & Model | Sisu Diesel, 6.6L, Inline-6, Turbo, Air-to-air Intercooler |
| Fuel Type & System | Diesel, Electronic Common Rail, Dry cartridge air cleaner |
| Emissions Tier | EPA Tier 3 / Stage IIIA (varies by year) |
| Number of Cylinders | 6 (inline) |
| Displacement | 6.6 liters / 402.8 cu in |
| Rated Horsepower (Gross) | 185 hp / 138.0 kW |
| PTO Horsepower (Claimed) | 155 hp |
| PTO Horsepower (Tested) | Up to 190 hp |
| Peak Torque | 620-670 Nm @ 1,500-1,600 rpm |
| Compression Ratio | 17:1 |
| Cooling System | Liquid cooled |
| Cooling Capacity | 18-22 liters (4.8-5.8 gal) |
Power Take-Off (PTO)
The PTO system on the AGCO RT155A delivers strong, reliable power for a wide range of implements. It combines high claimed horsepower, useful choices of PTO type, and flexible speed options to handle different jobs efficiently.
Claimed PTO Horsepower
You get a claimed PTO horsepower of 155 hp (115.6 kW), which means the tractor can transfer a significant amount of engine power to implements such as mowers, balers, and grain augers.
Tests have shown that the PTO horsepower can even reach approximately 190 hp (141.7 kW) under certain conditions, showing strong performance for demanding tasks.
This amount of power is ideal for heavy-duty applications that need consistent and reliable output from the PTO shaft.
Whether you are working with large round balers or running grain carts, the PTO can handle high-load requirements.
A table below summarizes key PTO horsepower figures:
| PTO Power Type | Claimed Value | Tested Value (approx.) |
|---|---|---|
| PTO Horsepower | 155 hp | 190 hp |
| Kilowatts | 115.6 kW | 141.7 kW |
PTO Type (Independent / Live / Economy)
The AGCO RT155A uses an independent PTO system.
This design allows you to engage and disengage the PTO without stopping the tractor or clutching.
It uses a separate control lever or button, making operation smoother and safer.
An independent PTO is best when you need to quickly start or stop implements while the tractor is still in motion.
This helps when you are turning on headlands or dealing with challenging crop conditions.
It increases your efficiency by reducing downtime compared to older live PTO systems.
Here’s a comparison of common PTO types:
| PTO Type | Description | Benefit |
|---|---|---|
| Independent | Operated by control, works anytime | Maximum convenience, safety |
| Live | Needs clutch for engagement | Some flexibility |
| Economy | Lower HP, saves fuel at reduced rpm | Best for light-duty implements |
PTO Speeds (540 / 1 000 rpm)
You have the flexibility to run the PTO at either 540 rpm or 1,000 rpm.
For 540 rpm, the engine needs to run at about 1,998 rpm.
For 1,000 rpm operation, the engine speed should be set to 2,033 rpm.
This allows you to match the speed to your implement requirements.
Most hay tools and small implements need 540 rpm, while bigger equipment like silage choppers use 1,000 rpm.
The shift between these two speeds is usually manual and straightforward on this tractor.
It lets you get the most power to your equipment while maintaining efficient engine operation.
A table to compare PTO speed options:
| PTO Speed | Required Engine RPM | Common Uses |
|---|---|---|
| 540 rpm | 1,998 rpm | Mowers, small balers |
| 1,000 rpm | 2,033 rpm | Choppers, large balers |
Transmission & Drivetrain
AGCO RT155A is equipped for versatility and power, using modern transmission and drivetrain technology to support field efficiency.
Its power transfer systems are built for demanding jobs and varied farm environments.
Transmission Type (Syncro, Powershift, CVT, HST)
You get advanced transmission choices in the AGCO RT155A.
Most models come with a QuadraShift partial power shift transmission, which allows you to shift gears without fully stopping or breaking traction.
This is helpful when working under load or changing speeds often.
Some RT155A tractors may feature a PowerMaxx CVT (Continuously Variable Transmission).
CVTs give you smooth transitions between speeds, making them ideal if you want seamless acceleration and hands-free shifting in variable conditions.
Both systems use wet disc clutches for smoother shifting and longer life.
Number of Gears / Ranges
The AGCO RT155A features up to 32 forward and 32 reverse gears through its QuadraShift transmission.
This large range gives you the flexibility to match speed to every task.
The power shift function is divided into six gears per range with four main ranges.
You can shift between these under power, so you’ll spend less time stopping and changing gears.
Other versions equipped with a CVT do not have fixed gear counts.
Instead, you get a continuous range of speeds, helping you to always find the right pace.
Top Transport Speed
You can reach a maximum transport speed of about 25 miles per hour (40 kilometers per hour).
This top speed lets you move quickly between fields or from field to farm.
If your RT155A has a CVT, the speed changes are much smoother.
You get precise control at lower speeds for delicate work and faster movement for transport.
The tractor remains stable and safe, with braking systems designed for its weight and top speed.
Drive (2WD / 4WD / AWD)
The RT155A primarily comes as a 4WD (Four-Wheel Drive) tractor.
This setup gives you better traction and performance in the field, especially on hills, soft soil, or during heavy pulling.
You can switch between 2WD and 4WD as needed.
This means more fuel efficiency on roads and more power to the ground in tough spots.
The front axle is a heavy-duty design, built to handle the stress of 4WD operation during loader work or field tasks.
Differential-Lock & Final Drives
A differential lock is standard on the AGCO RT155A.
This feature helps both rear wheels rotate together, giving you steady traction if one wheel starts to slip in mud or loose soil.
Final drives use a planetary reduction system, which provides strength and durability, especially under heavy loads.
This setup spreads torque more evenly across the axle.
It helps reduce wear on the drivetrain and keeps your tractor reliable in demanding conditions.
Transmission & Drivetrain Specifications Table
| Feature | Details |
|---|---|
| Transmission Type | QuadraShift partial power shift / PowerMaxx CVT |
| Clutch | Wet disc |
| Number of Gears | 32 forward, 32 reverse (QuadraShift); infinite (CVT) |
| Ranges | 4 main ranges with 6 power shift gears each (QuadraShift) |
| Top Transport Speed | Approx. 25 mph (40 km/h) |
| Drive | 4WD standard; switchable to 2WD |
| Differential Lock | Standard, rear axle |
| Final Drives | Planetary reduction |
Steering & Brakes
AGCO RT155A offers steering and braking features that make operation safer and smoother, with specific systems designed for ease of control and reliability.
These systems affect how you handle the tractor on the field and on the road, especially when turning or stopping under load.
| Feature | Type/Detail | Notes |
|---|---|---|
| Steering System | Hydrostatic Power Steering | Standard; delivers smooth, effortless control |
| Turning Radius (With Brakes) | Tight due to brake-assisted turns | Improved maneuverability |
| Service Brakes | Hydraulic Wet Disc Brakes | Reliable, low maintenance, fade-resistant |
| Parking Brake | Mechanical Handbrake | Simple, effective, and easy to engage |
Steering System (Hydrostatic / Power-Assisted / Mechanical)
You get hydrostatic power steering on the AGCO RT155A.
This means your steering is assisted by hydraulic pressure, making it much easier to turn the wheels, even with heavy loads or at low speeds.
There’s no need to struggle with a stiff wheel or worry about steering effort, reducing fatigue during long hours in the cab.
Hydrostatic systems ensure you get precise control, which is very useful for row-crop work, plowing, or headland turns.
A power steering pump sends hydraulic fluid under pressure to a steering cylinder, moving the wheels for you as you turn the wheel.
You can expect consistent performance because these systems work well in any weather.
No manual steering or mechanical-only connection is used, so you benefit from less effort and more control at all times.
Turning Radius (With Brakes)
Turning is a key part of efficient tractor work.
The RT155A has a tighter turning radius when you use brake-assisted turns.
This means that you can make sharper turns in the field by applying a brake to just one wheel, which pivots the tractor around that point.
This feature is useful for end-of-row turns or when navigating around obstacles.
Brake-assisted turning is standard on many full-size tractors but is especially noticeable on the RT155A because of its large overall size.
You save time backing up or making multiple passes.
This maneuverability can improve productivity, especially where space is restricted.
With proper brake use, your turning circle is minimized, so you get a more responsive feel from the tractor.
Service Brakes (Wet Disc, Dry Drum, etc.)
The AGCO RT155A comes with hydraulic wet disc brakes.
These brakes are fully enclosed in oil so they stay cooler and last longer than dry drum brakes.
Wet disc brakes resist fading under heavy loads, so you can rely on steady stopping power.
There’s less wear and less chance for dirt, dust, or debris to get into the braking surfaces.
These brakes also need less maintenance, which reduces downtime and total cost over time.
The hydraulic system multiplies your braking force, so you can stop quickly and safely, even with a full load or when traveling at road speed.
You get sure, even braking on both rear wheels, and the system is known for its durability.
Parking Brake Type
Your RT155A uses a mechanical handbrake for parking.
This handbrake is simple to engage—usually a dedicated lever in the cab that locks the brakes in place.
With a mechanical linkage, there are fewer parts to fail compared to hydraulic or electrical systems.
The handbrake works independently from the service brakes, so you always have a secure way to park the tractor on slopes or while idling.
You don’t need tools to engage or release it, and feedback from the lever ensures the brake is fully set.
Because it’s mechanical, routine inspection and occasional adjustment is enough to keep this system reliable.
This adds an extra layer of safety when working on uneven ground or parking with heavy implements attached.
Cab & Operator Station
You get a modern workspace with thoughtful design that keeps you comfortable during long hours.
Controls and visibility are set up for easy operation, and updates made from 2006 – 2011 improved the operator experience.
ROPS / Cab Option
The AGCO RT155A offered both an open ROPS (Roll Over Protection Structure) and a fully enclosed cab.
If you choose the ROPS version, you get strong overhead protection without side panels, keeping you safer in rollovers.
The cab model provides glass windows with weather protection and lockable doors.
You also benefit from better sound insulation and reduced dust exposure.
This closed environment increases comfort and keeps controls protected from outside elements.
For tough jobs and all-weather use, most operators preferred the cab.
Both options meet safety standards, but the cab offers extra layers of shielding you may need for long farming seasons.
Climate Control (A/C, Heater, Filter)
The climate control in the RT155A cab models gives you full air conditioning and a powerful heater.
The A/C helps cool down the cabin quickly in hot weather, while the adjustable heater keeps you warm during cold months.
A fresh air filtration system blocks dust, pollen, and exhaust, helping you breathe easier, especially if you spend hours inside every day.
Multiple vents in the ceiling and dash let you direct airflow where you want.
Fan speed and temperature are both easy to adjust, letting you dial in your comfort.
If you use the open ROPS version, you don’t have these systems.
Only the cab models include sealed climate controls and air filters for superior operator comfort.
Seat & Suspension
Your seat in the AGCO RT155A is designed for comfort and support.
The operator gets a high-back adjustable seat, often with air or mechanical suspension from 2006 and later.
Suspension helps absorb bumps and reduces fatigue.
Armrests, adjustable lumbar support, and swivel options make it easy to find your best position.
The placement of foot pedals, shifters, and controls keeps strain to a minimum during long shifts.
A buddy seat may be included, allowing someone to ride along safely.
The interior also gives you storage spaces, cup holders, and plenty of legroom, helping you stay organized and comfortable.
Noise Level (dB A @ Operator Ear)
The AGCO RT155A cab keeps noise levels down so you can focus. Under typical field conditions, measured sound at the operator’s ear is usually around 74-78 dB(A) for cab models, which is safe for all-day operation.
The cab’s insulation, rubber door seals, and tight window fit block much of the engine and transmission noise. If you use the open ROPS style, you’ll hear more from the engine, especially at high RPMs, which can reach 85 dB(A) or higher.
| Feature | Cab Version | ROPS Version |
|---|---|---|
| Structure | Fully enclosed, sealed glass & doors | Open, overhead protection only |
| Temperature Control | AC, Heater, Air Filter | None |
| Seat | Adjustable, suspension, lumbar support | Basic adjustable, limited upgrades |
| Noise Level | 74-78 dB(A) | 80-86 dB(A) |
| Protection | Weather, dust, enhanced rollover safety | Rollover only |
| Extra Features | Storage, cupholders, buddy seat (optional) | Minimal extras |
Hydraulics
The AGCO RT155A features a robust hydraulic system designed to handle large implements and tough field work. Its pressure and flow settings, pump types, and remote valve configuration play a major role in equipment efficiency.
System Type (Open-Center / Closed-Center / PFC)
You get a closed center, pressure flow compensated (PFC) hydraulic system on the AGCO RT155A. In a PFC system, fluid flows only when there is demand, which saves engine power and reduces heat compared to open-center designs.
The system automatically adjusts hydraulic flow and pressure based on load requirements. Closed center PFC systems make it easier for you to use large planters, air seeders, and other demanding implements.
This setup is also more responsive than open-center types, giving you steady performance with less throttle adjustment. Hydraulic efficiency is higher with PFC, especially when running multiple hydraulic functions at the same time.
Implement Pump Flow (L min⁻¹)
The AGCO RT155A’s implement hydraulic pump delivers a steady, high volume of oil flow specifically for external implements. This allows you to operate modern, high-demand tools smoothly, such as large row crop planters or hydraulic-driven attachments.
You typically see a main implement pump flow rate around 113 to 120 L/min. This strong output is ideal for running equipment that requires precise control and uninterrupted power.
With this kind of pump flow, your implements—like sprayers or stack-fold planters—get the oil they need without stalling or slowing down. Large, multi-function implements benefit the most because they depend on consistent oil delivery to all functions.
Steering Pump Flow (If Separate)
Some tractors use a separate pump for steering. This is important for safety, since steering always needs to be smooth and responsive, even when other hydraulic demands are high.
On the AGCO RT155A, the steering is integrated into the main hydraulic system. It is priority-controlled to make sure you always have reliable steering, no matter what implements are in use.
This design means there is no completely separate steering flow measurement, but the hydraulic priority valve sends oil to steering first, then to other hydraulic circuits.
Total Combined Flow
Total combined hydraulic flow matters when you are using several hydraulic functions simultaneously, such as lifting, folding, or steering.
The RT155A delivers a total combined flow that often approaches 120 L/min, factoring in both implement and any additional circuit needs. If you are running both your loader and rear-mounted tools, the hydraulic system can manage the load without starving any one function.
System Pressure (bar / psi)
System pressure is critical for getting power to your hydraulic tools. The AGCO RT155A hydraulic system runs at approximately 2900 psi (200 bar).
This high pressure lets you run demanding equipment with heavy lifting or precise movement requirements. It also helps with fast cycle times, so tools like loaders, planters, and drills perform without slowing down under load.
Remote Valves (Number & Type)
You have access to multiple remote hydraulic valves on the AGCO RT155A. It usually comes with three to four standard rear remotes, and an optional power beyond port for specialized needs.
Each remote valve is fully adjustable for flow and detent, letting you fine-tune the rate and duration of oil sent to each implement. Remotes are compatible with double-acting cylinders and often have float position for tools that need to follow the ground surface closely.
Having several SCVs makes it simple to operate complex attachments such as hydraulic motors or planters with multiple sections. Power beyond is available for advanced tools that require continuous, unrestricted hydraulic flow.
| Specification | Details |
|---|---|
| System Type | Closed Center, Pressure Flow Compensated (PFC) |
| Implement Pump Flow | ~113–120 L/min |
| Steering Pump Flow | Integrated, priority-controlled |
| Total Combined Flow | ~120 L/min |
| System Pressure | 2900 psi (200 bar) |
| Remote Valves | 3–4 standard rear SCVs, power beyond optional; adjustable flow and detent |
Three-Point Hitch (3PH)
The AGCO RT155A’s three-point hitch offers strong lifting power and precise implement control. Several key features—like hitch category, lift capacity, and controls—make a big difference in how you connect and use attachments.
| Feature | Specification | Description |
|---|---|---|
| Hitch Category | Category 3 | Supports larger implements |
| Lift Capacity @ Ball Ends | Approx. 10,000+ lbs | Handles heavy equipment |
| Draft / Position Control | Both included | Ensures steady depth and position of implements |
| Top-Link Sensing | Yes | Provides automatic depth adjustment |
Hitch Category (1 / 1N / 2 / 3)
The RT155A tractor uses a Category 3 three-point hitch. This category is common for large row crop and utility tractors like this model.
Category 3 hitches support much heavier implements than Category 1 or 2 hitches. You can attach wide equipment—like big plows, planters, and heavy-duty tillage gear.
The top link and lift arms are thicker, offering more strength and less flex when handling tough field tasks. Knowing your hitch category is important because it tells you which implements you can safely use.
Lift Capacity @ Ball Ends
Lift capacity at the ball ends for the AGCO RT155A’s three-point hitch is strong, rated at around 10,000 pounds (about 4,500 kg) or more. This means you can safely pick up and use most large field implements without trouble.
Heavy tools, such as big cultivators or mounted planters, stay stable even when the hitch is fully raised. The hydraulic system’s flow rate, about 30.5 gallons per minute, gives quick response and steady lifting.
Always check both the weight of your tool and the rated capacity before attaching it, to avoid overloading the system.
Draft / Position Control
The RT155A is equipped with both draft control and position control on its three-point hitch. Draft control keeps the working depth of ground equipment even, adjusting automatically based on soil resistance.
This is important for tillage tools like plows. Position control lets you raise or lower the hitch to a set height and hold it there.
This precision is useful for tasks like planting or cultivating, where implement depth needs to stay consistent. Having both controls gives you flexibility, whether you are working in variable soils or need exact placement of your tool.
Top-Link Sensing (Yes/No)
The top link on the RT155A’s three-point hitch features integrated sensing. This system detects how much force is being applied to the top link by the attached implement.
The sensing provides real-time feedback for the draft control system. As the ground gets harder, the hydraulics automatically adjust the hitch to keep the implement at the right depth.
This makes your work smoother, reduces slips, and protects both your tractor and implements from damage.
Axles & Load Limits
The AGCO RT155A tractor is designed to handle heavy workloads in farming. Understanding the axle load capacities and how the final-drive type works is important for getting the most out of your tractor safely.
Maximum Front-Axle Load (kg)
The AGCO RT155A uses a robust front axle built to carry the weight of the engine and any front-mounted equipment. Manufacturers do not always specify the exact number for the maximum front-axle load, but it is designed to handle the weight of front weights, loaders, and rough terrain.
Tractor load ratings usually depend on tire selection, the presence of ballast, and whether dual tires are used. For comparable tractors in the 185 hp class, front-axle load capacities typically range from 4,500 kg to 6,000 kg (9,900 to 13,200 lbs).
For safe use, you should always follow the recommendations in the operator’s manual, especially if you plan to use a front loader or add additional ballast. Overloading the axle can lead to premature wear, reduced steering control, or even axle failure.
Maximum Rear-Axle Load (kg)
The rear axle on the AGCO RT155A supports the main load of the tractor, implements, and towed equipment. This axle is built for strength, and most row crop tractors of this size have a maximum rear-axle load ranging from 7,500 kg to 9,000 kg (16,500 to 19,800 lbs).
These limits allow you to safely use heavy rear implements, carry ballast for traction, and tow large trailers without damaging the axle or compromising safety. Rear axle load capacity is also influenced by tire setup and ballast.
Check the load rating marked on your tires and follow guidelines from the manual to prevent exceeding the safe working limit, especially when using heavy attachments or traveling over uneven ground.
Final-Drive Type
The final-drive on the AGCO RT155A uses a heavy-duty planetary gear system. This setup increases torque at the wheels and reduces drivetrain stress.
A planetary final-drive is made up of a set of gears in a compact assembly at the end of each axle. This design distributes the load more efficiently and minimizes wear compared to simpler bevel gear layouts.
You benefit from smoother power delivery, longer service life, and the ability to handle high loads. Maintenance includes regular oil changes in the axle hubs and checking for gear wear or leaks.
Axles & Load Limits Table
| Component | Typical Capacity (kg) | Notes |
|---|---|---|
| Front Axle | 4,500–6,000 | Exact figure depends on tire and ballast configuration |
| Rear Axle | 7,500–9,000 | Limits may vary, always check tire and axle ratings |
| Final-Drive Type | N/A (design type) | Planetary gear system, supports higher loads & longevity |
| Maintenance Required | N/A (maintenance) | Check oil in axle hubs, inspect for wear and leaks |
Tires & Track Options
The AGCO RT155A gives you choices for fitting the tractor to your work, with several tire types and sizing options. You can change front and rear tires for different field conditions and add duals or flotation kits for more performance.
Standard Front Tire Size (Ag / Turf / Industrial)
You can equip the AGCO RT155A with different front tires depending on your needs. Most commonly, agricultural (Ag) tires like 14.9R30 or 16.9R30 are standard.
These tires offer strong traction for fieldwork and work well in mixed soils. For turf settings, you could select flotation or turf tires in sizes like 21L-24 or similar, which help minimize ground disturbance and protect grass surfaces.
Industrial tires, often with a multi-rib tread pattern, may also be available, suited for harder surfaces or occasional road use.
Here is a table summarizing the common front tire choices:
| Tire Type | Common Size | Primary Use | Tread Design |
|---|---|---|---|
| Ag | 14.9R30, 16.9R30 | Fieldwork, Row Crops | Deep Lug |
| Turf | 21L-24 | Lawns, Turf, Light Soil | Wide Flotation, Low Impact |
| Industrial | 12.5/80-18 | Loader, Utility, Road Use | Multi-rib, All Terrain |
Standard Rear Tire Size
Rear tires on the AGCO RT155A are larger for better traction and stability. The standard rear Ag tire is usually 18.4R42 or 20.8R42 for most field operations.
These sizes support high horsepower loads and help prevent slippage under heavy draft. If you need more flotation, you can choose wider turf or flotation tires, such as 500/70R34, for working in wet fields or soft ground.
Industrial tread is less common but available for specific non-field jobs. It’s important to match rear tire size to your implement requirements, as tire diameter affects ground speed and power transfer.
The table below shows typical rear tire options:
| Tire Type | Common Size | Features | Recommended Use |
|---|---|---|---|
| Ag | 18.4R42, 20.8R42 | Deep tread, high load capacity | Field, Heavy Tillage, Planting |
| Turf | 500/70R34 | Wide profile, low ground impact | Soft Fields, Turf Care |
| Industrial | 18.4-34 | Durable, road-ready | Loader, Municipal, Mixed Use |
Optional Duals / Tracks / Flotation Kits
Your AGCO RT155A can be equipped with dual rear and/or front wheels for greater stability and traction. Duals are helpful in heavy tillage or on hillsides, letting you maximize the tractor’s 185 hp without excess slippage or compaction.
You can also fit flotation kits for muddy or sensitive soils. These wide wheels spread the machine’s weight, protecting soil structure.
Track systems are generally not a factory option but may be available from aftermarket suppliers. Tracks further increase flotation and reduce ground pressure, though they are more expensive and need special maintenance.
Compare these options in the table:
| Option | Function | Typical Application | Considerations |
|---|---|---|---|
| Duals (Rear/Front) | Traction, Stability | Tillage, Heavy Pulling | Adds width, better grip |
| Flotation Kits | Lower ground pressure | Wet fields, Soft soil | More costly, slower on road |
| Tracks (Aftermarket) | Ultra-low compaction | Extreme soft or wet conditions | Expensive, complex installation |
Dimensions & Weight
The AGCO RT155A tractor stands out for its robust frame, substantial ground clearance, and clear weight specifications. Its measurements give you a solid idea of the tractor’s size, handling, and logistics requirements in real-world farming situations.
| Specification | 2WD Version | 4WD Version |
|---|---|---|
| Wheelbase | 118.6 in (301 cm) | 117.9 in (299 cm) |
| Overall Length | — | 196 in (497 cm) |
| Overall Width (Min Tread) | — | — |
| Height to ROPS / Cab | — | — |
| Ground Clearance | — | — |
| Shipping Weight | Starts at 14,300 lbs | Up to 15,100 lbs |
| Operating Weight (with fluids) | — | — |
Wheelbase
The wheelbase is important for the AGCO RT155A’s handling and stability. For the 2WD model, the wheelbase measures 118.6 inches (301 cm).
The 4WD version has a wheelbase of 117.9 inches (299 cm). The shorter wheelbase for the 4WD variant helps with tighter turning.
This makes the tractor easier to maneuver in fields and around obstacles. The difference between the 2WD and 4WD wheelbase is less than an inch.
A longer wheelbase generally provides better stability during heavy fieldwork or when carrying implements. Both versions offer a sturdy platform for various tasks.
Overall Length
Length is a major factor if you need to move or store your AGCO RT155A. The 4WD model measures 196 inches (497 cm) from front to back.
The Compact Variable Transmission (CVT) 4WD version is slightly shorter, at 187.8 inches. This dimension allows for easier storage in standard-sized barns or garages.
The longer frame makes the tractor more stable, especially when operating heavy equipment in the rear. Knowing the precise length helps you plan for transportation or on-farm storage.
Overall Width (Minimum Tread)
Your minimum tread width affects how well you can navigate narrow areas or fit between crop rows. While the precise minimum tread width is not given, width can be adjusted for your specific tasks by changing wheel configurations.
Typical agricultural tractors in this size class allow for a tread width adjustment that helps in row cropping and stability on uneven ground. This flexibility lets you meet the needs of different field layouts.
A narrower tread is better for row crops and tight spots. A wider tread provides improved stability, especially on hills or when carrying implements.
Height to ROPS / Cab
Height to the top of the ROPS (Rollover Protective Structure) or cab is important for moving through sheds, under trees, or for transport on trailers. Although the exact figure for the RT155A is not listed, most tractors this size range from 9 to 11 feet high.
Fitting under standard barn doors or overhanging branches may require you to know the precise height, especially when attachments such as cabs or beacons are installed. Always measure your specific tractor with any attachments for accurate clearance needs.
Include antennas or other additions to avoid accidents.
Ground Clearance
Ground clearance affects your ability to clear uneven terrain, crop residue, and obstacles without damaging the machine. While an exact number isn’t listed for the RT155A, similar tractors usually offer clearance of about 18 to 22 inches.
Proper clearance allows you to operate in taller crops and rough fields without risk to the undercarriage. This helps in reducing downtime from underbody damage or stuck situations.
Adjustments to tire size or tread can influence ground clearance further. Always account for extra attachments that may hang below the frame.
Shipping Weight
Shipping weight tells you how heavy the tractor is without fuel or other fluids. For the AGCO RT155A, this starts at 14,300 pounds for the lightest configuration, going up to 15,100 pounds with some options or 4WD setups.
This information is essential for transport. Knowing this weight lets you choose the right trailer and towing equipment.
Heavier tractors may need permits or special planning for roads and bridges. Always include the shipping weight in logistics planning.
Operating Weight (With Fluids)
Operating weight means the machine is ready for use with all standard fluids—oil, coolant, and a full fuel tank—but without a driver. Although the search results do not specify the RT155A’s exact running weight, it’s common for the difference between shipping and operating weight to be several hundred pounds.
When calculating total field weight, always consider wheel weights, attachments, and loaded tires, which add even more. This weight affects soil compaction and fuel use during long farm days.
Knowing your tractor’s real operating weight helps with trailer selection, field planning, and compliance with road regulations. Always check your own machine with all normal field equipment to ensure you’re using the correct numbers.
Fuel & Fluids
The AGCO RT155A has specific capacities for diesel, engine oil, and hydraulic/transmission fluid. Understanding each fluid type and correct maintenance is important for keeping your tractor running well and avoiding problems.
| Fluid Type | Capacity | Details / Notes |
|---|---|---|
| Diesel Fuel Tank | 100 gallons | SisuDiesel 6.6L; electronic common rail fuel injection |
| DEF Tank | Not applicable | Not required; Tier III—no DEF system |
| Engine Oil | ~21 quarts | Use high-quality oil; check level regularly |
| Hydraulic/Transmission Oil | ~23-25 gallons | Uses radiator for cooling; check filters and level |
Fuel-Tank Capacity
The AGCO RT155A tractor has a large fuel tank with a 100-gallon (378.5-liter) capacity. This gives you long operation times in the field before you need to refuel.
The 6.6L SisuDiesel engine uses an electronic common rail fuel injection system. It is designed to be efficient and deliver 185 hp while keeping fuel consumption steady during heavy use.
A large fuel tank is helpful during long working days. Make sure to always use clean, fresh diesel fuel to prevent problems with the injection system.
DEF-Tank Capacity (If Applicable)
The AGCO RT155A is a Tier III emissions tractor, so it does not use a Diesel Exhaust Fluid (DEF) system. You do not need to add or monitor DEF for this model.
This means one less fluid to manage. You only need to keep track of regular diesel in the main fuel tank.
No DEF also means fewer system parts to maintain, making fueling and regular upkeep more straightforward.
Engine Oil Capacity
The engine oil capacity for the AGCO RT155A is about 21 quarts (approximately 5.25 gallons or 20 liters). Use the oil type and grade recommended by the manufacturer for best results.
Check engine oil levels daily before starting work. The oil cools and lubricates the engine. It also prevents wear on critical parts.
Change the oil and oil filter at the intervals listed in your owner’s manual. Regular oil changes keep the engine running smoothly and extend its life.
Hydraulic/Transmission Oil Capacity
The hydraulic and transmission system of the AGCO RT155A holds roughly 23 to 25 gallons (about 87 to 95 liters) of oil. This reservoir is large enough to support demanding hydraulic operations like lifting or using implements.
Cooling for both hydraulic and transmission oil is provided by a radiator system. Check for leaks, monitor oil levels, and replace the filters as recommended to prevent damage.
Use only the hydraulic oil types specified by the manufacturer. Mixing fluids or using the wrong type can cause system problems.
Always keep extra fluid and new filters on hand for maintenance.
Electrical System
The AGCO RT155A tractor is equipped with a modern 12-volt electrical system designed for dependable engine starting and safe operation of all components. System reliability is enhanced by a high-output alternator and a robust battery with sufficient cold cranking amps for cold weather starts.
| Subtopic | Specification / Description |
|---|---|
| Ground Type | Negative |
| Alternator / Charging System | 12-volt alternator, electronic voltage regulator |
| Charging Output (Amps) | 120-150 amps (typical) |
| Battery Voltage | 12 volts |
| Battery CCA Rating | 900-1100 CCA |
Ground Type (Negative / Positive)
You will find the AGCO RT155A uses a negative ground system. This is the most common ground type in modern tractors and vehicles.
The negative terminal of the battery is connected directly to the chassis of the tractor, forming the grounding point for all electrical circuits. With a negative ground, electrical troubleshooting and repairs are straightforward.
Most diagnostic tools and accessories are designed for negative ground use. A negative ground system also helps prevent corrosion and issues that can be caused by stray currents.
The main advantage for you is consistent compatibility with replacement parts and standard equipment. Whenever you install new electrical components, you will be working within a negative ground framework.
Alternator / Charging System
The alternator is a key part of your AGCO RT155A’s electrical system. It is a 12-volt alternator equipped with an electronic voltage regulator.
This regulator helps maintain a stable voltage level and protects the battery and electronic components from voltage spikes. Your alternator is belt-driven and operates whenever the engine is running.
The alternator recharges the battery and powers all electrical accessories in the cab, such as lights, climate controls, and technology packages. With today’s tractors using more electronics, a reliable alternator is essential.
An alternator failure can result in the battery discharging, which can eventually prevent the engine from starting. It’s important to keep the alternator belt in good condition and regularly check connections for corrosion or wear.
Charging Output (Amps)
The charging output for the AGCO RT155A alternator typically falls in the range of 120 to 150 amps. This high output is necessary for running both the tractor’s basic functions and multiple electronic systems at the same time.
A higher amp rating allows you to use extra lights, monitors, and other powered accessories without quickly draining the battery. It also makes cold-weather starts more reliable because the battery gets recharged quickly even in tough conditions.
If you plan to add a lot of electrical equipment to your tractor, you may want to monitor the alternator’s output with a voltmeter to ensure it stays within recommended levels.
Battery Voltage
Standard battery voltage on the AGCO RT155A is 12 volts. This matches most of today’s agricultural equipment, allowing for easy battery sourcing and maintenance.
A 12-volt system is powerful enough for reliable engine starting and running a wide range of electrical accessories. Always check the battery voltage using a reliable multimeter.
Proper voltage should be around 12.6 volts when fully charged and not under heavy load. If voltage drops under 12 volts when equipment is off, your battery may be failing or not charging properly.
A healthy battery helps guarantee starts in all weather conditions and right operation for the entire electrical system.
Battery CCA Rating
The battery used in the AGCO RT155A typically has a Cold Cranking Amps (CCA) rating between 900 and 1100 CCA. CCA indicates how much current the battery can deliver at 0°F (-18°C) for 30 seconds while keeping voltage above a certain level.
A high CCA rating is critical if you operate in cold climates, as diesel engines require more power to start at low temperatures. Choosing a battery within or above the CCA range ensures strong cranking power during winter.
Make sure you check the CCA rating listed on your replacement batteries. Using a battery with too low a rating may cause hard starts or failed starts, especially in extreme weather.
Total Cost of Ownership Metrics
You need to plan for service, maintenance expenses, equipment value loss, and fuel use. Each factor affects how much you spend over the years you own the AGCO RT155A tractor.
Recommended Service Intervals
Service intervals for the AGCO RT155A follow manufacturer guidelines for heavy farm machinery. Engine oil and filter should be changed every 250 hours of operation.
Transmission fluid checks and hydraulic filter changes are required every 500 hours. Air filters usually need to be inspected or changed every 250 hours in normal conditions.
Every 1,000 hours, the cooling system and drive belts need inspection for wear and leaks. Electrical and electronic checks are performed yearly.
Skipping services can void your warranty and cause bigger repair costs.
Estimated Annual Maintenance Cost
Annual maintenance costs depend on usage, but a well-kept AGCO RT155A used for average farm work (approx. 1,000 hours per year) will cost between $3,000 and $5,000 per year for regular maintenance.
Breakdown of annual maintenance costs:
- Oil, filters, lubricants: $700–$1,000
- Hydraulic fluid and filters: $400–$700
- Wear parts (tires, belts, hoses): $800–$1,200
- Labor (if using a service shop): $1,100–$2,100
Major unexpected repairs may add to these numbers if the tractor is heavily used or not serviced on time.
Depreciation Curve (% Per Year)
Tractors depreciate over time, and the AGCO RT155A typically follows a stable depreciation curve if well maintained. In the first year, expect around a 10–15% drop from purchase value.
After this, depreciation slows to about 7–10% per year for the next four years. Years 6–10 see values go down by 5–7% per year.
After 10 years, value loss becomes slower, but resale price depends on overall condition and hours run.
Fuel Consumption @ Rated Load (L hr⁻¹)
At rated load, the AGCO RT155A consumes about 30–35 liters per hour (L/hr) depending on the application, soil type, and operator habits.
Operating in lighter conditions uses less fuel, sometimes as low as 25 L/hr.
Heavy tillage, pulling large implements, or running PTO at maximum demand pushes consumption toward the higher end.
Efficient tractor settings and routine engine care can help control these fuel costs each season.
Ownership Metrics Summary Table
| Metric | Details / Typical Values |
|---|---|
| Service Intervals | Oil/filters: 250 hrs; Hydraulic: 500 hrs; Air: 250 hrs; Major: 1,000 hrs; Annual electronics check |
| Annual Maintenance Cost | $3,000–$5,000 (typical 1,000 hrs use) |
| Depreciation (per year) | 10–15% (Yr 1); 7–10% (Yrs 2–5); 5–7% (Yrs 6–10) |
| Fuel Consumption @ Rated Load (L/hr) | 30–35 L/hr (heavy work); 25 L/hr (light/medium) |
| Major Cost Influencers | Usage hours, service adherence, application type, operator habits |