Challenger MT645B VS Ursus 1934 specs comparison

Challenger MT645B
General InfosMake | Challenger |
Model | MT645B |
Country | United states |
Production | From 2005 Until 2008 |
Price | - |
Tractor type | Row Crop tractor |
Fuel | diesel |
Service repair manual | Challenger MT645B Manual |
Dimensions, sizes and tires
AG front tires | 380/85R34 |
AG rear tires | 480/80R46 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 18,308 lbs or 8304 kg |
Length | 206 inches [523 cm] |
Width | 118 inches [299 cm] |
Height | 123.6 inches [313 cm] |
Wheelbase | 121.1 inches [307 cm] |
Ground clearance | 22.4 inches [56 cm] |
Turning radius | - |
Rear tread size | 60 to 88 inches |
Front tread size | - |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 449 ci or 7.4 L |
Cylinders | 6 cylinders 24 valves |
Engine power | 235 hp or 175.2 kW |
Engine RPM | 2200 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 159 gal or 601.8 L |
Oil capacity | 20 qts or 18.9 L |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | Challenger MT645B Parts |
Batteries number | 2 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | 775 |
Ground force | negative |
Charging system | alternator |
Charging Volts | - |
Charging Amps | 150 amps |
Trans system | TechStar |
Trans type | continuously variable transmission (CVT) |
Trans gears | infinite (2-range) forward and reverse |
Clutch system | - |
Wheel drive | 4x4 MFWD 4WD |
Final drive | inboard planetary |
Steering | power |
Braking system | hydraulic wet disc |
Cabin type | Cab standard with heat and A/C |
Differentiel lock | electrohydraulic front and rear |
System | pressure flow compensated |
Valves | 4 to 6 |
Pump flow | - |
SVC flow | - |
Steering flow | - |
Tank capacity | 26.4 gal or 99.9 L |
Hydraulic pressure | 2900 psi or 200.0 bar |
Max flow | 39 gpm or 147.6 lpm |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | 172.30 hp or 128.5 kW |
Fuel consumption | 12.0 gal/hour or 45.4 l/hour |
Pulling power | 16,954 lbs or 7690 kg |
Claimed power | 200 hp or 149.1 kW |
Real power | 221.55 hp or 165.2 kW |
Engine @RPM | 540@2037 (rpm) |
PTO Clutch | electro-hydraulic wet disc |
Rear PTO | independent |
Rear PTO RPM | 540 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 12.0 gal/hour or 45.4 l/hour |
Hitch system | - |
Rear hitch | III |
Rear hitch lift | 15,600 lbs or 7076 kg |
Front hitch | II |
Front hitch lift | 7,700 lbs or 3492 kg |

Ursus 1934
General InfosMake | Ursus |
Model | 1934 |
Country | Poland |
Production | From 2001 Until 2009 |
Price | - |
Tractor type | - |
Fuel | diesel |
Service repair manual | Ursus 1934 Manual |
Dimensions, sizes and tires
AG front tires | 16.9R28 |
AG rear tires | 20.8R38 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 13625 lbs or 6180 kg |
Length | 177.2 inches [450 cm] |
Width | 95.9 inches [243 cm] |
Height | 118.9 inches [302 cm] |
Wheelbase | 106.5 inches [270 cm] |
Ground clearance | 19.7 inches [50 cm] |
Turning radius | - |
Rear tread size | 70.9 inches |
Front tread size | 66.5/70.5/74.4 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 445.4 ci or 7.3 L |
Cylinders | 6 cylinders |
Engine power | 187.7 hp or 140.0 kW |
Engine RPM | 220 (rpm) |
Torque | 532.5 lb-ft or 722.1 Nm | Torque RPM | 1530 (rpm) |
Fuel type | diesel |
Fuel injection | direct injection |
Fuel tank size | 93.8 gal or 355.0 L |
Oil capacity | 20.1 qts or 19.0 L |
Oil change | - |
Starter motor | electric |
Starter volts | 24 V |
Parts And Accessories | Ursus 1934 Parts |
Batteries number | 2 |
Batteries voltage | 12 V |
Battries Amps | 172 amps |
Cold Amps | - |
Ground force | - |
Charging system | alternator |
Charging Volts | 14 V |
Charging Amps | 55 amps |
Trans system | - |
Trans type | two-speed power shift |
Trans gears | 16 forward and 8 reverse |
Clutch system | 380mm hydraulic dry disc |
Wheel drive | 4x4 MFWD 4WD |
Final drive | - |
Steering | power |
Braking system | wet disc |
Cabin type | Cab standard with heater |
Differentiel lock | electro-hydraulic front and rear |
System | - |
Valves | - |
Pump flow | 14.5 gpm or 54.9 lpm |
SVC flow | - |
Steering flow | - |
Tank capacity | 14.5 gal or 54.9 L |
Hydraulic pressure | - |
Max flow | - |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | - |
Fuel consumption | - |
Pulling power | - |
Claimed power | 166.3 hp or 124.0 kW |
Real power | - |
Engine @RPM | 540@1890 (rpm) |
PTO Clutch | hydraulic |
Rear PTO | independent |
Rear PTO RPM | 540 (rpm) |
Front PTO | 1000 |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | - |
Hitch system | position and draft control |
Rear hitch | III |
Rear hitch lift | 15873 lbs or 7199 kg |
Front hitch | - |
Front hitch lift | - |
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Choose another tractor
Useful links and guides ....
- Challenger provided us with the latest version of its MT645B service repair manual
- Find All mechanical and electrical parts and accessories of Challenger MT645B farm-tractor here
- Get your Ursus 1934 manual book version
- Cabine, electrical And mechanical parts for Ursus 1934 farm-tractor here