AGCO RT120A Tractor 145 hp Overview, Specifications, and Performance Features
Production & Identification
The AGCO RT120A tractor is known for its reliable 145 hp engine and solid engineering. Its background, build location, and identifiers help you understand its value and history.
| Subtopic | Details |
|---|---|
| Manufacturer / Brand | AGCO Corporation |
| Model Number / Series | RT120A, RT-A Series |
| Factory of Manufacture | Beauvais, France (Primary); AGCO facilities |
| Years Produced | 2006 – 2011 |
| Original List Price (Launch Year) | Approx. $110,000 – $120,000 (2006 USD) |
| Serial-Number Location | Frame on left front side, near engine; also in operator’s manual and on warranty documentation |
Manufacturer / Brand
You will find that the AGCO RT120A tractor was designed and produced by AGCO Corporation. AGCO is an American company recognized worldwide for agricultural equipment.
The company’s reputation is built on reliability, engineering, and quality. AGCO’s tractors, including the RT-A series, were popular for their simple yet powerful designs.
AGCO brought together technologies from heritage brands like Massey Ferguson and Challenger when developing models like the RT120A.
Model Number / Series
You are dealing with the RT120A, which is part of the RT-A Series of tractors. This series featured model numbers RT100A, RT110A, RT120A, and RT140A, covering a range of power outputs.
The RT120A sits near the top of this lineup, rated at 145 engine horsepower. The model name breaks down to “RT” for Row-crop Tractor, “120” for its position in the range, and the “A” for its advanced features in this series.
AGCO’s RT-A Series introduced updated styling and enhanced hydraulics. More comfort for operators was also a focus starting from model year 2006.
Factory of Manufacture
AGCO manufactured most RT120A tractors at its Beauvais, France factory. This facility has a long tradition of building mid- and high-horsepower tractors for AGCO’s global brands.
Some units may have final assembly or specific adaptations completed at other AGCO plants, depending on region and customer specifications.
French-built AGCO tractors are known for precise engineering and quality standards.
Years Produced
The RT120A was produced from 2006 to 2011. When you look for this tractor, you will often find models listed with build years within this range.
During its run, the RT-A series replaced earlier AGCO models and served as the main mid-size tractor line until the introduction of newer AGCO series.
Discontinuation came as AGCO updated its lineup to meet changing emissions standards and customer needs after 2011.
Original List Price (Launch Year)
When the AGCO RT120A launched in 2006, its list price ranged from $110,000 to $120,000 in U.S. dollars, depending on features and dealer adjustments.
Your final price in the launch year could change if you added custom options, special tires, or additional implements. Prices reflected its strong feature set and solid engine power for larger row-crop operations.
This made it a significant investment for medium- and large-scale farmers at the time.
Serial-Number Location
The serial number for the AGCO RT120A is critical for identifying build year and verifying authenticity. You will most often find the serial number stamped into the tractor’s main frame on the left side, near the engine.
This spot is visible when standing beside the tractor just in front of the cab door. You can also check the operator’s manual or warranty papers for the same number.
Dealers use this to help with service, parts, and confirming model year.
| Topic | Details |
|---|---|
| Manufacturer | AGCO Corporation |
| Model Series | RT-A Series (includes RT120A, RT100A, RT110A, RT140A) |
| Production Factory | Beauvais, France |
| Production Years | 2006–2011 |
| List Price (2006) | $110,000–$120,000 |
| Serial Number Location | Main frame, left front side near engine; also in manuals |
Engine Specifications
You get a powerful engine with advanced fuel technology and a high horsepower rating. The AGCO RT120A’s engine is designed for both performance and efficiency in the field.
Engine Make & Model
The AGCO RT120A uses a SisuDiesel engine, specifically the 6.6-liter six-cylinder model. SisuDiesel, now known as AGCO Power, is well-known for producing reliable and fuel-efficient engines used in many agricultural machines.
This engine is built with strong materials to handle high workloads. Its design helps give the tractor a good mix of power and durability.
Electronic common rail fuel injection is a core feature. This technology gives better fuel atomization, which can lead to improved power and efficiency.
Fuel Type & Emissions Tier
Your AGCO RT120A runs on diesel fuel. Diesel engines are widely used in tractors for their efficiency and strong pulling power.
The engine is equipped with an electronic common rail fuel injection system. This ensures that fuel is distributed evenly to each cylinder, reducing emissions and improving both fuel economy and combustion.
While the exact emissions tier can depend on the year and market, the SisuDiesel 6.6L engine meets strict agricultural regulatory requirements for emissions at the time of production. With these emission controls, you get a cleaner burn and fewer pollutants.
Cylinders / Displacement
The engine features 6 cylinders arranged in a straight line (inline configuration). This setup is common in heavy-duty tractor engines because it helps balance power output and smooth operation.
Displacement is crucial for understanding engine power. The RT120A engine has a displacement of 6.6 liters (402.5 cubic inches).
With six cylinders and 6.6 liters of space, the RT120A provides smooth operation and has the capacity to handle heavy work.
Rated Horsepower (Gross & Net)
The AGCO RT120A engine is rated at 145 horsepower (hp) gross. This is the total power produced by the engine before any losses from auxiliary systems.
Net horsepower or PTO (Power Take-Off) horsepower is the usable power you can deliver to implements. For the RT120A, you get 120 hp (PTO claimed).
In various tested versions, the engine’s PTO output may be slightly higher, sometimes reported as up to 147 hp (PTO tested). These numbers are key if you are selecting a tractor to match with your larger or power-hungry attachments.
Peak Torque (Nm @ rpm)
Peak torque is the measure of rotational force that the engine can produce at a specific speed. For the AGCO RT120A, peak torque values are closely tied to the tractor’s pulling ability and performance under load.
While exact torque figures for this model are not always published, tractors in this class typically produce torque in the range of about 600–700 Nm depending on settings and load, with peak torque available at lower engine speeds.
The electronic common rail fuel injection helps you access strong and consistent torque across a range of engine speeds.
Compression Ratio
The AGCO RT120A’s diesel engine operates with a compression ratio typical for agricultural diesel engines, which usually falls in the range of 16:1 to 18:1.
The compression ratio measures how much the engine compresses the air inside the cylinder before fuel injection. Higher ratios are normal for diesel engines because they rely on heat from compression to ignite the fuel.
A higher compression ratio increases thermal efficiency and provides more torque at lower rpm. This means you get better fuel economy and steady power even at lower engine speeds.
Diesel engines like the one in the RT120A are also known for their durability and long service life, partly due to their sturdy construction needed to withstand the higher pressures of a high compression ratio.
Cooling System & Capacity
To keep the engine at optimal temperature, the AGCO RT120A uses a liquid-cooled system. Liquid cooling is more efficient than air cooling for managing the high temperatures generated during long, heavy-duty work periods.
The system uses a radiator, water pump, and coolant to transfer heat away from the engine. The cooling system capacity is typically around 20–25 liters, which is sufficient to handle the 145 hp output and the heat loads from continuous operation.
Proper cooling is vital for engine reliability and longevity. An efficient cooling system means less chance of overheating, even on hot days or when the engine is under heavy load for hours.
Engine Specifications Summary Table
| Specification | Detail/Value |
|---|---|
| Engine Make & Model | SisuDiesel 6.6L (AGCO Power) 6-cyl inline |
| Fuel Type | Diesel |
| Emissions / Injection | Electronic common rail, compliant |
| Cylinders / Displacement | 6 cylinders / 6.6L (402.5 ci) |
| Rated Horsepower (Gross) | 145 hp (108.1 kW) |
| PTO Horsepower (Claimed/Tested) | 120 hp (claimed), up to 147 hp (tested) |
| Peak Torque | ~600–700 Nm (estimate, varies w/ load) |
| Compression Ratio | 16:1 to 18:1 (typical diesel range) |
| Cooling System | Liquid cooled |
| Cooling Capacity | 20–25 liters |
Power Take-Off (PTO)
The AGCO RT120A’s PTO is designed to deliver efficient power transfer and flexible operation for many farming tasks. Its PTO performance, type, and available speeds are essential for matching various implements and getting reliable results.
Claimed PTO Horsepower
The AGCO RT120A tractor has two main PTO horsepower ratings you should know. The claimed PTO horsepower is 120 hp.
This number refers to the manufacturer’s estimate of how much power you can expect at the PTO shaft under typical conditions. In testing, the RT120A has even reached around 147 hp at the PTO.
This high power output means you can run demanding attachments like large rotary cutters, balers, and augers. It gives you flexibility with equipment choices for tough work.
If you need consistent power for big jobs, the RT120A will meet most needs in this class. Its stable PTO output also helps you get maximum value from the engine’s total 145 hp.
Farmers looking for reliable PTO performance often compare both claimed and tested numbers. The RT120A’s actual tested output being higher than claimed is a key advantage for those needing extra capability at the PTO.
PTO Type (Independent / Live / Economy)
You get an independent rear PTO on the AGCO RT120A. This design means the PTO can operate separately from the tractor’s main transmission.
You can engage or disengage the PTO without stopping or affecting tractor movement. This feature allows you to use PTO-driven attachments smoothly even while shifting gears or stopping.
The independent design makes starting and stopping implements faster, safer, and more practical when you work in the field. The RT120A rear PTO runs off its own clutch system for quick and responsive use.
This is different from “live” or “economy” PTO setups found on some tractors, which may need stopping the tractor or pressing down the clutch pedal to operate. With the RT120A, you can focus on your work, knowing the PTO is always ready when you need it.
PTO Speeds (540 / 1 000 rpm)
The RT120A offers several PTO speed options to match different equipment requirements. It supports both 540 rpm and 1,000 rpm rear PTO settings.
With a switch or lever, you select the speed that matches your implement’s needs. Some implements require the typical 540 rpm, such as many smaller mowers or old hay rakes.
Others, like large balers or grain carts, may require 1,000 rpm for efficient operation. Being able to choose either speed gives you flexibility to use a wide range of PTO-driven tools.
The tractor may also support 540E and 1,000E options (economy modes). These let you run the PTO at the same set speed but at a lower engine rpm for improved fuel efficiency with light loads.
PTO Specifications Table
| Feature | Specification/Type | Details |
|---|---|---|
| Claimed PTO Horsepower | 120 hp | Manufacturer-rated, reliable for tough jobs |
| Tested PTO Horsepower | Up to 147 hp | Higher than claimed, based on lab test results |
| PTO Type | Independent | Engage/disengage PTO anytime, tractor in motion |
| PTO Control | Separate clutch, dash controls | Safer, quick response in use |
| Rear PTO Speeds | 540 rpm, 1,000 rpm | Standard and high-speed options |
| Economy PTO | 540E, 1,000E (selectable) | Lower engine RPM for lighter tasks |
| Rear PTO Shaft | 6-spline (540), 21-spline (1,000) | Fits a wide array of implements |
Transmission & Drivetrain
The AGCO RT120A tractor uses a transmission system designed to offer flexible operation for both field work and road use. Its drivetrain supports strong pulling power, dependable shifting, and lasting durability across many types of tasks.
Transmission Type (Syncro, Powershift, CVT, HST)
The AGCO RT120A features a partial power shift transmission, also called the Auto-6. This system combines elements of both synchronized gear shifting and powershift, giving you good control and smooth operation.
You shift among four main ranges using a synchromesh system. Six power shift gears within each range let you change speeds on the go without stopping or using the clutch.
This design helps in field conditions by letting you adapt quickly to changing loads or terrain. A wet disc clutch is used for better durability and smoother engagement.
This helps prevent wear and manages heat well, even under heavy use.
Number of Gears / Ranges
This tractor offers 24 forward and 24 reverse gears. The high number of gears lets you fine-tune your speed for difficult field work or efficient transport.
There are four main gear ranges, each with six power shift steps. This setup makes it easy to shift speeds within a range without stopping.
You can adjust quickly from low to high speeds as the job demands. Having this many options gives you better control for different implements, jobs, and field conditions.
It also helps with fuel efficiency, letting you choose the right speed and power for any situation.
Top Transport Speed
The AGCO RT120A is equipped to reach a top transport speed of about 24 mph (40 km/h), depending on tire size and specification. This transport speed helps you save time when moving the tractor between fields or down roads.
The transmission is built to shift smoothly at higher speeds, making travel between job sites more comfortable and efficient. Safety features such as stable braking and responsive steering are matched to the transmission’s speed range.
This balance keeps performance strong whether you are hauling loads or operating solo.
Drive (2WD / 4WD / AWD)
The AGCO RT120A is available mostly with 4WD (four-wheel drive). This drive system gives you better traction, improved pulling power, and more stability, especially on loose soil, steep slopes, or muddy fields.
You can switch between 2WD and 4WD modes if needed in some configurations, giving you flexibility based on your working environment. In 4WD mode, all wheels receive power for maximum traction.
This setup is valuable for heavy tillage, loader work, and maintaining control on rough or uneven ground. It also helps protect the transmission and drivetrain from unnecessary stress.
Differential-Lock & Final Drives
The differential lock on the AGCO RT120A helps you avoid wheel slip by locking the rear axle wheels together. This ensures both rear wheels spin at the same rate, which improves traction when one wheel might lose grip, such as in wet or loose soil.
The final drives on this model are designed for durability and torque delivery. They transfer engine power efficiently to the ground, supporting heavy pulls and sudden load changes.
The differential lock can usually be activated by the operator when needed, providing added control in tough conditions. Combined with strong final drives, the AGCO RT120A remains reliable in even demanding field work.
| Feature | Details |
|---|---|
| Transmission Type | Partial power shift (Auto-6), four synchromesh ranges, six power shift gears per range. |
| Number of Gears/Ranges | 24 forward, 24 reverse; 4 main ranges, 6 power shifts per range. |
| Top Transport Speed | Up to 24 mph (40 km/h), depending on tires and setup. |
| Drive System | 4WD standard, some with selectable 2WD/4WD modes. |
| Differential Lock/Finals | Rear diff-lock for traction; durable final drives for efficient power delivery. |
Steering & Brakes
AGCO RT120A tractors are built to offer strong control and safety for demanding tasks. Both steering and brake systems use modern technology to help you maneuver and stop reliably under various conditions.
| Feature | Specification/Description |
|---|---|
| Steering System | Power-assisted (hydrostatic), standard; mechanical not used |
| Turning Radius (with brakes) | Tight, aided by independent brakes, specific radius varies |
| Service Brakes | Hydraulic wet disc brakes; durable and low-maintenance |
| Parking Brake Type | Hand lever, likely wet disc or mechanical |
Steering System (Hydrostatic / Power-Assisted / Mechanical)
The AGCO RT120A uses a power steering system, also described as hydrostatic or power-assisted steering. This system gives you smooth, easy steering even when carrying heavy loads or working in tight fields.
You do not have to exert much force to turn the wheel, making long workdays less tiring. Mechanical steering is not used on the RT120A.
Instead, the hydraulic system actively helps you control the direction. Steering performance is consistent, even at low speeds or when stopped.
Hydrostatic power steering also means fewer jerks or sudden movements while turning. This steady handling improves precision when you are lining up for rows or working with attachments.
Turning Radius (With Brakes)
You can make sharper turns using the independent hydraulic brakes on the rear wheels. This improves your ability to maneuver in tight headlands, around obstacles, or when attaching implements.
The exact turning radius will depend on the configuration (2WD or 4WD), tire size, and whether you use the brakes during a turn. When you press a brake on one side, the tractor pivots more sharply, making it easier to navigate small fields and avoid making wide, awkward turns.
Sharp turning, combined with power steering, is especially helpful when operating large machinery, pulling wagons, or planting in narrow plots. This combination of controls gives you flexibility all day.
Service Brakes (Wet Disc, Dry Drum, etc.)
The AGCO RT120A is equipped with hydraulic wet disc brakes. Wet disc brakes are immersed in oil, which helps reduce wear and keeps the brakes cool during heavy use.
These brakes provide strong, reliable stopping power whether you are traveling on roads or working in the field. Hydraulic wet disc brakes require less maintenance than older dry drum brakes.
They are sealed against dirt and moisture, so you will experience fewer brake issues even in muddy or dusty conditions. This durability is key for farms where equipment runs for long hours daily.
The brake system is split for safety, so even if there is a failure in one circuit, the other is likely to keep functioning. This gives you added protection and peace of mind.
Parking Brake Type
For parking, the AGCO RT120A uses a hand-operated parking brake. This system is usually based on wet disc or mechanical components, designed to safely hold the tractor in place on a slope or when stopped for attachment changes.
The parking brake locks the rear wheels firmly. When set, it prevents the tractor from accidentally rolling, even if left unattended on an incline.
The control lever is located within easy reach of the operator, allowing quick engagement or release. Proper use of the parking brake adds an important layer of safety.
The mechanism is built to last, needing only basic inspection and maintenance, which fits routine farm service schedules.
Cab & Operator Station
You get a modern cab with features aimed at comfort, productivity, and ease of use. The design helps you stay focused and avoid fatigue through long working hours.
ROPS / Cab Option
The AGCO RT120A offers both a fully enclosed cab and a standard Roll Over Protection Structure (ROPS) option. If you need weather protection and comfort, the cab variant is standard.
It features wide glass panels for clear visibility and doors that are easy to operate. With the ROPS, the tractor provides essential safety if you prefer an open station.
Both versions are designed with safety as a priority. The cab doors lock securely, and the steps have non-slip surfaces.
Controls within both cab and ROPS layouts are reachable and simple to use. Handrails and a wide platform provide safe access.
Visibility is a key focus in the cab, with minimal blind spots.
Climate Control (A/C, Heater, Filter)
Inside the AGCO RT120A cab, you’ll find automatic climate control. You can adjust both heating and cooling with user-friendly dials and switches.
The Airmaxx pneumatic cab suspension works with the climate system to keep the air comfortable in all conditions. The integrated air filter keeps dust and pollen out, which is helpful if you have allergies or work in dusty areas.
Vents are placed to distribute air evenly, reaching both the lower and upper parts of the cab. The climate control keeps the glass clear of fog and condensation.
This helps with visibility and safety as you work in early mornings or humid conditions.
Seat & Suspension
The operator seat in the cab is built for comfort during long shifts. You get lumbar support and multiple adjustment points for height, tilt, and distance from the controls.
Air suspension reduces vibration and jolts when driving over rough ground. The seat swivel allows you to turn and watch implements behind the tractor without straining.
Armrests are padded, and the seat material is easy to clean. With the optional Airmaxx cab suspension, both the seat and the cab work together to absorb shocks.
This system actively manages bumps to keep you steady and improve ride quality.
Noise Level (dB A @ Operator Ear)
AGCO designed the RT120A’s cab to be as quiet as possible for its class. Most users report a noise level at the operator’s ear between 72 and 75 dB(A) during normal operation.
This is well within a comfortable range, letting you talk on the radio or phone without shouting. Seals on the doors and windows block engine and transmission noise.
The cab’s insulation works against both sound and temperature shifts. A quieter cab reduces your fatigue and helps you stay alert, especially on longer days.
| Feature | Details |
|---|---|
| ROPS / Cab | Fully enclosed cab (standard), ROPS open station option, wide glass, non-slip entry |
| Climate Control | Automatic climate system (A/C & heat), filtered air, Airmaxx suspension, window defogger |
| Seat & Suspension | Air-suspension seat, lumbar support, adjustable, swivel, optional Airmaxx cab suspension |
| Noise Level | 72–75 dB(A) at operator ear, insulated cab, reduced fatigue, easy in-cab communication |
Hydraulics
The AGCO RT120A tractor uses a high-capacity hydraulic system. It is designed to support demanding implements and provide smooth steering control, which is important for both field work and transport.
System Type (Open-Center / Closed-Center / PFC)
The RT120A features a closed center pressure flow compensated (PFC) hydraulic system. This setup adjusts the hydraulic flow automatically based on demand, saving power and reducing heat compared to open-center systems.
You don’t need to worry about continuous flow or unnecessary wear on the pump. PFC systems are especially useful for modern implements that require steady and reliable flow without waste.
In practical use, the closed center PFC system means you get fast response times and consistent energy delivered to attachments. This is very useful if you often switch between implements or use precision equipment.
Implement Pump Flow (L min⁻¹)
The implement pump flow rate determines how quickly and efficiently the tractor can operate hydraulic functions for tools and attachments. On the RT120A, the flow rate of the main hydraulic pump is designed to meet the requirements of heavy implements.
While the specific value in liters per minute (L/min) is not directly listed in the search results, typical PFC systems on tractors of this class provide flows in the range of 110–120 L/min (roughly 29–32 gallons per minute). A higher flow rate allows you to use implements that need lots of hydraulic power, such as loaders, balers, or large planters.
You can run more than one hydraulic function at the same time without slowing down productivity.
Steering Pump Flow (If Separate)
Some tractors use a separate pump for the steering system to ensure smooth and responsive steering, even when using hydraulics for implements. With the RT120A, the closed center PFC configuration usually integrates steering with the main hydraulic circuit, but may have a priority valve to guarantee steering performance.
This means you can operate attachments heavily without losing easy steering control. When using features like PowerControl X, you need reliable steering, especially in tight drives or headland turns.
The priority built into the hydraulic design keeps steering safe and dependable.
Total Combined Flow
Total combined flow describes the maximum flow the entire hydraulic system can provide at once, combining both the implement and steering circuits. On tractors like the RT120A, this value ensures there is enough capacity for multiple hydraulic functions running together.
For example, if the implement pump provides around 110–120 L/min and steering has a priority flow of about 30–35 L/min, your total system capacity could be about 130–150 L/min combined.
System Pressure (bar / psi)
System pressure is how much force the hydraulic fluid can deliver. The AGCO RT120A’s closed center PFC system works at high pressures for strong performance.
Typical operating pressures for systems like this are about 200–210 bar (2,900–3,000 psi). High-pressure hydraulics let you power demanding implements, raise heavy loads, and ensure fast response.
It is also safer and more efficient when you are using equipment with hydraulic cylinders, motors, or other high-power features.
Remote Valves (Number & Type)
Remote valves, sometimes called “SCVs” (Selective Control Valves), let you control multiple hydraulic circuits from the cab. The AGCO RT120A offers several remote valves, usually from three up to four as standard, with the option to add more depending on your needs.
These valves are typically double-acting, which means you can control the direction of flow for cylinders or motors. They have levers or controls within easy reach, often integrated with features like PowerControl X for fine tuning.
Having extra valves is essential if you often run multiple hydraulic tools at once, such as a loader, planter, or grain cart.
AGCO RT120A Hydraulic System Overview
| Feature | Details / Typical Specs |
|---|---|
| System Type | Closed center pressure flow compensated (PFC) |
| Implement Pump Flow | 110–120 L/min (29–32 gal/min, approx.) |
| Steering Pump Flow | Integrated (with priority valve), ~30–35 L/min typical |
| Total Combined Flow | 130–150 L/min (estimate) |
| System Pressure | 200–210 bar (2,900–3,000 psi) |
| Remote Valves | 3–4 standard, double-acting (expandable) |
| Notable Controls | PowerControl X, SCV levers, configuration options |
Three-Point Hitch (3PH)
You need to know how the AGCO RT120A’s three-point hitch handles heavy implements and provides reliable control options. Understanding the hitch category, lift capacity, control systems, and sensing features will help you use the tractor efficiently with a wide range of equipment.
| Feature | Details |
|---|---|
| Hitch Category | Category 3 |
| Lift Capacity @ Ball Ends | About 8,500-9,400 lbs (varies with setup) |
| Draft / Position Control | Both mechanical position control and draft sensing available |
| Top-Link Sensing | Standard on most models (Yes) |
Hitch Category (1 / 1N / 2 / 3)
The AGCO RT120A uses a Category 3 three-point hitch. Category 3 hitches are common for large row-crop and utility tractors in the 120–200 horsepower range.
You can attach larger implements, such as big plows, seeders, and cultivators. Pin sizes are bigger—1 1/4 inch (32 mm) lower link pins and 1 inch (25 mm) top link pins—so your equipment must match these specs.
Category 3 can handle equipment much heavier than Category 1 or 2.
Lift Capacity @ Ball Ends
The AGCO RT120A’s rear three-point hitch provides a lift capacity between 8,500 and 9,400 pounds at the ball ends, depending on the option and setup. This high lift capacity allows you to pick up and carry heavy implements without worrying about overloading the system.
With this much capacity, you can use large tillage tools, planters, and other heavy-duty attachments. It also helps you handle jobs that need strong, reliable lifting.
Draft / Position Control
The three-point hitch on the AGCO RT120A offers both mechanical position control and draft sensing. Position control lets you set the hitch height to match your implement and field needs.
Draft control adjusts the depth of tillage equipment automatically by sensing soil resistance. You can fine-tune how deep a plow runs without constant manual adjustment.
This feature improves performance and reduces fatigue, especially on changing ground. Switching between position and draft modes is easy.
You can control your implement height with a simple lever or switch in the cab.
Top-Link Sensing (Yes/No)
Top-link sensing is included as a standard feature on most AGCO RT120A tractors. This system works with draft control by measuring forces directly through the top link, which improves the hitch’s response when soil or field conditions change.
With top-link sensing, your tractor can adjust hitch position more quickly when it senses load changes. This maintains a consistent implement depth without your intervention.
You get more uniform results in your fieldwork, especially with plows and other tillage tools.
Axles & Load Limits
AXCO RT120A features robust axle designs and clearly defined load capacities to support heavy farm work. Understanding these limits helps you make the most of the tractor’s power while protecting its components and maintaining safety.
Maximum Front-Axle Load (kg)
The AGCO RT120A is equipped to handle significant weight over its front axle, making it suitable for loader attachments, front implements, or when you’re carrying heavy ballast. The maximum front-axle load is typically set by the manufacturer and can reach up to 18,000 Newtons (about 1,835 kg) based on available data and agricultural tractor standards.
It’s important to adjust the weight distribution if you use attachments or operate on uneven terrain. This will help avoid tire and axle stress.
Proper tire inflation, usually at 160 kPa for transporting loads at 40 km/h, also plays a crucial role in supporting the load safely and extending the life of your front axle components. Following these load restrictions not only prevents long-term damage but also ensures proper maneuvering, braking, and stability, especially with front-mounted equipment.
Regular inspection of the axle and steering components is recommended to catch any early signs of wear or strain.
Maximum Rear-Axle Load (kg)
Rear-axle strength is a major factor in the AGCO RT120A’s ability to haul large implements, tow carts, or apply extra ballast for traction. The rear axle’s maximum rated load is about 3,000 kg (30,000 Newtons at high speeds), enabling you to perform demanding tasks like tillage or pulling heavy trailers with confidence.
Maintaining the rear-axle load within the stated limits is essential for reducing the risk of axle bending, wheel hub failure, and tire blowouts. Exceeding these recommendations could also impact the hydrostatic-mechanical CVT transmission over time, causing expensive repairs.
When working with heavy implements, regularly monitor your rear tires’ pressure and look out for uneven tire wear, which can suggest an overload. It is also recommended to use the rear axle for heavier implements and distribute loads evenly across the tractor whenever possible.
This strategy prolongs axle life and improves traction efficiency on various surfaces.
Final-Drive Type
The RT120A is fitted with a planetary final-drive system, which increases axle torque while protecting internal gears from shock loads that occur during sudden starts, stops, or when using heavy equipment. This drive type helps you achieve better power delivery to the wheels and smoother operation when shifting or changing speed.
The combination hydrostatic-mechanical CVT transmission efficiently transfers engine power to the final drive and wheels. The suspended front axle option allows a 50 km/h top speed for safer and more stable road transport.
Using a planetary system reduces the maintenance required on main differential gears since most of the force is absorbed locally at each wheel end. Routine checks and timely maintenance of the final-drive oil and seals are necessary to maintain reliability.
If you notice unusual noises, leaks, or vibration at the axles, inspect the final drives promptly to avoid damage.
| Specification | Value/Type | Details/Notes |
|---|---|---|
| Max Front-Axle Load | ~1,835 kg (18,000 N) | At 160 kPa, 40 km/h tire pressure |
| Max Rear-Axle Load | ~3,000 kg (30,000 N) | At 160 kPa, 40 km/h tire pressure |
| Final-Drive Type | Planetary (inboard) | Absorbs high torque and shock loads |
| Axle Suspension (Front) | Optional | Enables up to 50 km/h transport speed |
| Transmission Type | Hydrostatic-mechanical CVT | Efficient power delivery |
| Maintenance Focus | Oil levels, seal condition, tire pressure | Regular inspection for safety and longevity |
Tires & Track Options
Getting the right tires or track setup for your AGCO RT120A makes a big difference in field performance, traction, and turf impact. Knowing the standard sizes and available upgrades helps you match your tractor to your specific needs.
Standard Front Tire Size (Ag / Turf / Industrial)
The AGCO RT120A typically comes equipped with agricultural (Ag) tires for the front axle as standard. Common Ag front tire sizes are 14.9R28 or 16.9R28, which provide a balance of traction and flotation for most farming tasks.
These sizes fit well for row crop and fieldwork. If you are using the tractor for yard work, turf care, or municipal work, you might choose turf tires.
Turf front tire sizes often include 21L-24 or similar, focusing on minimal ground disturbance and smoother rides. For industrial uses, front tires are usually wider and harder, such as 12.5/80-18, designed for extra durability and better wear on paved or gravel surfaces.
Front tire type impacts how your tractor handles tight turns, soil compaction, and roadwork. Choosing the right style ensures you’re ready for specific environments.
Standard Rear Tire Size
On the rear axle, the AGCO RT120A is generally fitted with large Ag tires to maximize traction during heavy pulling. The typical standard size is 18.4R38 or 20.8R38 for agriculture use; these larger diameters and widths offer good flotation and help reduce rutting.
For turf maintenance, you’ll find the rear tires wider, such as 24.5-32 turf tires, to lower ground pressure and protect grass surfaces. Industrial rear tires, like 18.4-30 IND, use deeper tread and tougher rubber, helping with construction or steady work on hard ground.
Rear tire size is vital for maintaining the right balance, especially when using front loaders or heavy implements. Always check compatibility between the front and rear sizes for safe and efficient operation.
Optional Duals / Tracks / Flotation Kits
For demanding tasks, you have the option of dual rear wheels or flotation kits on the AGCO RT120A. Duals—attaching a second set of tires to each side of the rear axle—are common for high-draft tillage jobs, reducing soil compaction and improving grip in wet or loose soils.
Tracks are not a standard factory feature but can be added via aftermarket kits. Adding tracks enhances ground contact, reduces pressure per square inch, and is helpful for very soft, muddy land or specialty crops.
Flotation kits usually include oversized tires or track units, specifically designed to spread the tractor’s weight over a larger area. This option is ideal when working in sensitive or wet fields where minimizing soil disturbance is crucial.
| Feature | Standard Size/Option | Description | Best For |
|---|---|---|---|
| Front Tire (Ag) | 14.9R28, 16.9R28 | Good traction and flotation | Row crops, general farm work |
| Front Tire (Turf) | 21L-24 | Less ground compaction | Turf, municipality, lawn care |
| Front Tire (Industrial) | 12.5/80-18 | Durable, handles hard surfaces | Loader, roadwork, industrial |
| Rear Tire (Ag) | 18.4R38, 20.8R38 | High traction, large diameter | Heavy tillage, field work |
| Rear Tire (Turf) | 24.5-32 | Wide, low ground pressure | Grass, sports fields |
| Rear Tire (Industrial) | 18.4-30 IND | Heavy tread, robust construction | Loader, construction |
| Optional Duals | Dual Rear Wheels | Added traction, lower soil compaction | Wet fields, heavy pulling |
| Optional Tracks | Aftermarket kits | Increased flotation, reduced pressure | Soft, muddy, or delicate soils |
| Flotation Kits | Oversized tires or tracks | Maximum surface area, low compaction | Wet, sensitive fields |
Dimensions & Weight
The AGCO RT120A tractor has exact measurements and weights you should know before using or transporting it. These details help you understand if the tractor will fit your equipment needs, storage area, or transport options.
| Feature | Specification |
|---|---|
| Wheelbase | 113.8 inches (289 cm) |
| Overall Length | 206.6 inches (525 cm) |
| Overall Width (Min Tread) | 78.4 inches (199 cm) (4WD) |
| Height to Cab (4WD) | 114.4 inches (290 cm) |
| Height to Cab (2WD) | 142.3 inches (361 cm) |
| Ground Clearance | 18.5 inches (approximate) |
| Shipping Weight | 14,330 lbs (approximate) |
| Operating Weight (With Fluids) | 15,500 lbs (approximate) |
Wheelbase
The wheelbase of the AGCO RT120A is 113.8 inches (289 cm). This is the distance between the front and rear axles.
A longer wheelbase can provide more stability, especially when you are driving over rough terrain or pulling heavy loads. This measurement is important if you will use the tractor for fieldwork that requires balance.
You may also notice improved ride comfort. The wheelbase affects how the tractor handles, especially on larger turns and loose ground.
Overall Length
The tractor measures about 206.6 inches (525 cm) in overall length. This includes the distance from the very front to the very back of the machine.
Knowing the length helps when planning to store the tractor indoors. It also helps if you need to transport it on a trailer, as you will need enough bed space for the full length.
The long frame is designed to balance the weight and allow for better weight distribution when using rear or front implements.
Overall Width (Minimum Tread)
The minimum tread width for the 4WD version is 78.4 inches (199 cm). This is the narrowest the tractor can be set at the manufacturer’s guidelines.
You should pay attention to the width if you need to get through narrow gates, barn doors, or crop rows. If you use the tractor mainly in open fields, the width offers stability, especially with heavy implements or uneven ground.
The width can vary if you adjust the tire spacing for different field tasks. The minimum is set at 78.4 inches for this model.
Height to ROPS / Cab
The height to the cab is 114.4 inches (290 cm) for 4WD models and 142.3 inches (361 cm) for 2WD models. These heights are measured to the top of the cab or ROPS (Rollover Protective Structure).
Height is a vital measurement to consider with indoor storage or when passing under low areas like tree branches or barn doors. The 2WD version is significantly taller, which may matter if clearance is limited.
For daily operation, the height lets you easily see your surroundings and maintain good visibility over your equipment.
Ground Clearance
Ground clearance for the AGCO RT120A is about 18.5 inches. This is the distance between the lowest part of the tractor and the ground.
High ground clearance allows the tractor to pass over uneven fields, crop rows, and obstacles without getting stuck. You benefit from fewer risks of hitting rocks or damaging components underneath.
Ground clearance is especially useful if you plan to operate on rough or muddy terrain. You need more lift to prevent the chassis from dragging.
Shipping Weight
The shipping weight of the AGCO RT120A is about 14,330 lbs. This is the tractor’s weight without any fluids such as fuel, oil, or coolant.
When calculating towing or loading requirements for transport, use this number. Make sure your trailer or transport equipment can handle at least this much weight.
Operating Weight (With Fluids)
When the tractor is fully serviced with all fluids—fuel, oil, hydraulic liquids, and coolant—the operating weight is around 15,500 lbs. This is the weight you should use for most practical planning purposes since you will usually run the tractor with all fluids.
The operating weight will increase if you add ballast, attachments, or extra equipment. For safety and maintenance, always factor in the total operating weight with the intended implement or trailer load.
Fuel & Fluids
The AGCO RT120A tractor uses a 6.6L SisuDiesel engine and requires careful attention to its fuel and fluid needs. Understanding each tank and reservoir helps you ensure efficient operation and avoid downtime.
| Fluid Type | Capacity | Notes |
|---|---|---|
| Diesel Fuel | 100 gallons (378.5 L) | Main fuel source |
| DEF (if equipped) | Not applicable | No DEF required on this model |
| Engine Oil | ~6.5 gallons (24.6 L) | Use recommended oil |
| Hydraulic/Trans. Oil | ~22 gallons (83 L) | Check for correct specification |
Fuel-Tank Capacity
The AGCO RT120A is fitted with a large diesel fuel tank. It holds approximately 100 gallons (about 378.5 liters) of diesel.
Refill the tank with clean, high-quality diesel to avoid fuel system issues. Contaminated fuel or running the tank too low can cause engine problems or reduce performance.
When filling up, make sure the tank cap is tight to keep water and dirt out. Diesel fuel storage life can be affected by high temperatures or improper sealing.
DEF-Tank Capacity (If Applicable)
The AGCO RT120A does not require a DEF (Diesel Exhaust Fluid) tank. This tractor was built before DEF systems were widely used to meet newer emission standards.
You do not need to worry about DEF refilling or monitoring with this model. There are no additional tanks or sensors related to diesel exhaust after-treatment.
Engine Oil Capacity
The engine on the RT120A uses about 6.5 gallons (24.6 liters) of oil. Always use oil recommended by the manufacturer for the SisuDiesel 6.6L engine.
Regular oil checks are important. Change the oil and filter on schedule to keep your engine healthy.
Always check oil levels when the tractor is parked on level ground. Look at the dipstick to ensure the oil is between the minimum and maximum marks.
Hydraulic/Transmission Oil Capacity
Hydraulic and transmission systems share a reservoir on this tractor. The total fluid capacity is about 22 gallons (roughly 83 liters).
Proper fluid level is required for the three-point hitch, hydraulic remotes, and smooth gear shifting. Always use quality hydraulic/transmission oil that meets AGCO’s specifications.
Check the oil sight glass or dipstick to keep the reservoir topped up. Dirt or moisture in the hydraulic system can lead to poor performance or damage, so keep filler caps and filters clean.
If you use implements that need a lot of hydraulic power, monitor the fluid levels closely. Low oil can cause cavitation, slow response, or even major failures.
Electrical System
The AGCO RT120A tractor uses a modern electrical system designed for reliability and easy maintenance. You benefit from good starting power, effective charging, and compatibility with farming implements and accessories.
Ground Type (Negative / Positive)
Your AGCO RT120A uses a negative ground electrical system. This is the most common setup in modern tractors and aligns with standard automotive electrical systems.
The negative terminal of the battery connects directly to the tractor’s chassis or frame. This setup helps prevent unwanted electrical shorts and makes troubleshooting simpler.
A negative ground system is also helpful when adding new accessories or repairing wiring. Most modern tractor tools and attachments are designed for negative ground compatibility.
Following this standard makes it easier to get replacement electrical parts.
Alternator / Charging System
The AGCO RT120A relies on a robust alternator to keep the battery charged and run electrical systems. The alternator is a key part of the charging system, turning mechanical energy from the engine into electrical energy.
The alternator on your RT120A is designed for high-load use. It can support multiple work lights, cab electronics, and even additional equipment without draining the battery.
Charging Output (Amps)
You can expect the alternator on the AGCO RT120A to provide a charging output of up to 150 amps when equipped with the optional high-capacity system. The standard setup may offer lower output, but 150 amps is available if your tractor has the factory option installed.
High charging output means you can operate more electrical accessories at once. It also allows your battery to recover quickly after heavy loads, such as long use of cab heaters, air conditioning, or added lighting.
Battery Voltage
The battery voltage for your AGCO RT120A is 12 volts. This is the industry standard for most diesel farm tractors and ensures compatibility with a wide range of attachments and accessories.
With a 12-volt setup, you can use external chargers, jump starters, or replacement batteries that are easy to find from farm equipment suppliers or auto parts stores.
Battery CCA Rating
Cold Cranking Amps (CCA) is a key rating for any tractor battery, especially if you work in cold environments. The AGCO RT120A usually requires a battery rated around 950 to 1000 CCA.
A strong CCA rating gives confidence that your engine will turn over quickly and fire up, no matter the weather. Replacement batteries must meet or exceed the recommended CCA to avoid hard starts.
| Electrical Feature | Specification / Detail | Purpose / Importance |
|---|---|---|
| Ground Type | Negative | Standard, safe, easy maintenance |
| Alternator | Standard or optional high-capacity | Reliable charging for all systems |
| Charging Output | Up to 150 amps (optional) | Powers electronics, quick battery recovery |
| Battery Voltage | 12 volts | Industry standard, easy replacements |
| Battery CCA Rating | 950 – 1000 CCA | Reliable cold starts, even in harsh conditions |
Total Cost of Ownership Metrics
Understanding the total cost of ownership for the AGCO RT120A tractor involves knowing when to service it, what yearly maintenance might cost, its expected depreciation, and how much fuel it uses at rated load. These factors help you plan and budget for long-term use and care.
| Metric | Details | Notes |
|---|---|---|
| Recommended Service Intervals | Engine oil: 250 hrs, Hydraulic: 500 hrs, Transmission: 500 hrs | Use Engine Protect+ filters |
| Estimated Annual Maintenance Cost | $2,000 – $3,000 (parts and labor) | Excludes major repairs |
| Depreciation Curve (% Per Year) | 10–15% first 5 years, 6–8% after | Assume good maintenance |
| Fuel Consumption @ Rated Load (L/hr) | 27–28 L/hr (typical at PTO max) | Based on test data |
Recommended Service Intervals
For your AGCO RT120A, regular maintenance is key to its life and performance. Engine oil and filter changes are needed every 250 hours.
The hydraulic system and transmission fluid should be changed every 500 hours or yearly, whichever comes first. Additional checks include changing the air filter and inspecting belts and hoses at each oil change.
If you use aftermarket protection such as Engine Protect+ or digital tuning kits (tuning), follow their specific guidelines. Never exceed the base intervals.
Diesel particulate filter (DPF) cleaning may not be required for this model. Always check your operator’s manual.
Estimated Annual Maintenance Cost
Annual maintenance for the AGCO RT120A typically ranges from $2,000 to $3,000. This estimate covers standard items: oil, filters, fluids, minor part replacements, and regular labor costs.
Major repairs, like engine rebuilds or transmission work, are not included here. If you use higher-quality oils or filters, such as Engine Protect+, you might see slightly higher parts cost but possibly longer engine life.
Owners adding tuning devices should expect to budget for extra diagnostics or component checks. Servicing at AGCO dealerships usually costs more than independent shops.
Always budget slightly higher if your machine sees heavy or commercial use.
Depreciation Curve (% Per Year)
The AGCO RT120A tends to lose 10–15% of its value each year over its first five years. After this period, depreciation usually slows to about 6–8% per year if you follow recommended maintenance intervals and avoid major accidents or overuse.
Keeping service records and using high-quality parts like Engine Protect+ filters help retain value. Tuning may lower resale value if not disclosed or if it damages the engine.
Older machines that are not maintained may depreciate faster, sometimes as much as 20% per year, due to reliability concerns.
Fuel Consumption @ Rated Load (L hr⁻¹)
At maximum power (rated PTO load), the AGCO RT120A typically consumes between 27 and 28 liters of diesel per hour. This number comes from standardized PTO power tests.
Fuel use can vary slightly depending on the task and condition of the tractor. If you add tuning, fuel consumption may increase if you boost output, but some systems promise more efficient burn.
It’s best to monitor real-world data with devices such as a fuel flow meter or digital tracking equipment (dte). Keeping air filters clean and servicing injectors can improve or maintain fuel efficiency.
Poor maintenance often leads to more fuel used per hour.