Challenger MT225B
Power
22 hp
Production
2005-2008
Engine
Diesel, 3-cylinder
Transmission
Hydrostatic
Drive
4WD
From the same series:
Introduction
Challenger MT225B Compact Utility Tractor
The Challenger MT225B is a compact utility tractor produced by Iseki in Matsuyama, Japan, and distributed by Challenger between 2005 and 2008. Designed for versatility in landscaping, gardening, and light agricultural tasks, it belongs to the MT200 series, succeeding the earlier MT225 model.
Engine and Performance
The tractor is powered by the Iseki E3312, a 1.1-liter, 3-cylinder liquid-cooled diesel engine. It utilizes an indirect injection fuel system and delivers a net power output of 22 horsepower at a rated speed of 2600 RPM. The engine features a bore and stroke of 78 mm by 78 mm and a compression ratio of 22.5:1, ensuring consistent performance for standard utility applications.
Transmission and Drivetrain
The MT225B is equipped with an infinite-range hydrostatic transmission, allowing for seamless speed control across two speed ranges. The drivetrain incorporates a four-wheel drive system, spur gear final drives, and a mechanical rear differential lock to improve traction on varied terrain. The operator engages the transmission via an electro-hydraulic wet disc clutch system.
Hydraulics and Hitch
The open-center hydraulic system provides a total flow rate of 8.1 gallons per minute (30.7 lpm), with 5.5 gpm dedicated to the main pump and 2.64 gpm to the steering circuit. The system operates at a pressure of 1990 psi. The rear Category I three-point hitch offers position and response control, with a lift capacity of 1,190 lbs (539 kg) at the hitch ends.
PTO and Dimensions
The machine features an independent rear PTO operating at 540 RPM (1.375-inch shaft) and a standard mid-mounted PTO operating at 2000 RPM. Physically, the tractor has a wheelbase of 59.8 inches and a minimum width of 39.4 inches, making it suitable for compact working environments. It is fitted with a two-post fixed Roll-Over Protective Structure (ROPS).
Conclusion
The Challenger MT225B is a compact utility tractor engineered for operations requiring maneuverability and reliability in small-scale farming or maintenance tasks. Its combination of a hydrostatic transmission, hydrostatic power steering, and dual PTO capability allows it to support a variety of mid-mounted and rear-mounted implements.
Production Information of Challenger, MT225B
- Built in Matsuyama, Japan
- Compact Utility tractor
| Distributor | Challenger (a part of AGCO) |
|---|---|
| Manufacturer | Iseki |
Dimension and Tires Information of Challenger, MT225B
| Flange rear axle | 33.62 inch length [853 mm] |
|---|---|
| Wheelbase | 59.8 inches [151 cm] |
| Ground clearance | 10.4 inches [26 cm] |
| Height (ROPS) | 77 inches [195 cm] |
| Length | 102 inches [259 cm] |
| Front tread | 35.6 inches [90 cm] |
| Front axle | Flange: 34.58 inch length [878 mm] |
| Width | 39.4 inches [100 cm] |
| Rear tread | 35.6 inches [90 cm] |
Minimum width.
| Ag front | 6-12 |
|---|---|
| Industrial front | 23x8.50-12 |
| Lawn/turf rear | 33x12.50-16.5 |
| Ag rear | 9.5-16 |
| Industrial rear | 12x16.5 |
| Lawn/turf front | 23x10.50-12 |
Engine Specifications of Challenger, MT225B
- Iseki E3312
- Liquid-cooled
- Diesel
- 3-cylinder
| Oil capacity | 2.9 qts [2.7 L] |
|---|---|
| Starter volts | 12 |
| Power (gross) | 22.5 hp [16.8 kW] |
| Coolant capacity | 7.5 qts [7.1 L] |
| Air cleaner | Dry |
| Pre-heating | Glow plugs |
| Fuel system | Indirect injection |
| Displacement | 68.5 ci [1.1 L] |
| Power (net) | 22 hp [16.4 kW] |
| Bore/Stroke | 3.08x3.07 inches [78 x 78 mm] |
| Idle RPM | 1250-2860 |
| Rated RPM | 2600 |
| Compression | 22.5:1 |
Transmission Information of Challenger, MT225B
Transmission variants 1
| Type | Hydrostatic |
|---|---|
| Gears | Infinite forward and reverse (2-range) |
| Oil capacity | 14.8 qts [14.0 L] |
Mechanical Specs of Challenger, MT225B
- Four-wheel drive
- Wet disc brakes
- Two-post fixed ROPS.
| Steering | Hydrostatic power |
|---|---|
| Final drives | Spur gear |
| Differential lock | Mechanical rear |
Power Information of Challenger, MT225B
| Rear PTO | Independent |
|---|---|
| Mid PTO Type | 2000 (1.00) |
| Mid PTO | Standard |
| Clutch | Electro-hydraulic wet disc |
| Rear PTO Type | 540 (1.375) |
Hydraulics Specifications of Challenger, MT225B
| Steering flow | 2.64 gpm [10.0 lpm] |
|---|---|
| Type | Open center |
| Pump flow | 5.5 gpm [20.8 lpm] |
| Mid valves(optional) | 2 |
| Pressure | 1990 psi [137.2 bar] |
| Steering press. | 1493 psi [102.9 bar] |
| Total flow | 8.1 gpm [30.7 lpm] |
| Rear valves(optional) | 2 |
Three-Point Hitch of Challenger, MT225B
| Rear Type | I |
|---|---|
| Rear Arms | Fixed link ends |
| Rear lift (at 24"/610mm) | 591 lbs [268 kg] |
| Control | Position and response control |
| Rear lift (at ends) | 1190 lbs [539 kg] |
Electrical System of Challenger, MT225B
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Battery CCA | 435 |
| Charging system | Alternator |
| Charging amps | 40 |
Where it sits
With 22 HP, the Challenger MT225B sits just below MT225 (23 HP) in Challenger's range. Its power puts it in the 7th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Challenger MT225B have?
The Challenger MT225B delivers 22 HP.
What years was the Challenger MT225B produced?
The Challenger MT225B was produced in 2005-2008.
What engine does the Challenger MT225B have?
The Challenger MT225B is powered by a Diesel, 3-cylinder engine.
What transmission does the Challenger MT225B use?
The Challenger MT225B uses a Hydrostatic transmission.
Is the Challenger MT225B 4WD?
The Challenger MT225B is available in 4WD.