Challenger MT645C VS Zetor Proxima 6441 specs comparison

Challenger MT645C
General InfosMake | Challenger |
Model | MT645C |
Country | United states |
Production | From 2009 Until 2010 |
Price | - |
Tractor type | Row Crop tractor |
Fuel | diesel |
Service repair manual | Challenger MT645C Manual |
Dimensions, sizes and tires
AG front tires | 480/70R34 |
AG rear tires | 520/85R46 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 24,250 lbs or 10999 kg |
Length | 223.2 inches [566 cm] |
Width | - |
Height | 133.1 inches [338 cm] |
Wheelbase | 122.2 inches [310 cm] |
Ground clearance | - |
Turning radius | - |
Rear tread size | - |
Front tread size | - |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 512.6 ci or 8.4 L |
Cylinders | 6 cylinders |
Engine power | 240 hp or 179.0 kW |
Engine RPM | 2200 (rpm) |
Torque | 874 lb-ft or 1185.1 Nm | Torque RPM | 1500 (rpm) |
Fuel type | diesel |
Fuel injection | electronic high-pressure common rail |
Fuel tank size | 155.9 gal or 590.1 L |
Oil capacity | - |
Oil change | - |
Starter motor | electric |
Starter volts | 12 V |
Parts And Accessories | Challenger MT645C Parts |
Batteries number | - |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | - |
Ground force | negative |
Charging system | alternator |
Charging Volts | - |
Charging Amps | 240 amps |
Trans system | Techstar CVT |
Trans type | continuously variable transmission |
Trans gears | infinite forward and reverse |
Clutch system | - |
Wheel drive | 4x4 MFWD 4WD |
Final drive | - |
Steering | hydrostatic power |
Braking system | hydraulic wet disc |
Cabin type | Cab standard with heat and air-conditioning |
Differentiel lock | - |
System | closed center load sensing |
Valves | 4 to 6 |
Pump flow | 26.4 gpm or 99.9 lpm |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | 2,901 psi or 200.0 bar |
Max flow | 46.2 gpm or 174.9 lpm |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | 175.1 hp or 130.6 kW |
Fuel consumption | 13.5 gal/hour or 51.1 l/hour |
Pulling power | 26770 lbs or 12142 kg |
Claimed power | 205 hp or 152.9 kW |
Real power | 239.0 hp or 178.2 kW |
Engine @RPM | - |
PTO Clutch | - |
Rear PTO | independent electro-hydaulic |
Rear PTO RPM | 540E (rpm) |
Front PTO | optional |
Front PTO RPM | 1000 (rpm) |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 13.8 gal/hour or 52.2 l/hour |
Hitch system | - |
Rear hitch | III, IV |
Rear hitch lift | 26,460 lbs or 12002 kg |
Front hitch | III |
Front hitch lift | 11,020 lbs or 4998 kg |

Zetor Proxima 6441
General InfosMake | Zetor |
Model | Proxima 6441 |
Country | Czech republic |
Production | From 2004 Until 2009 |
Price | - |
Tractor type | - |
Fuel | diesel |
Service repair manual | Zetor Proxima 6441 Manual |
Dimensions, sizes and tires
AG front tires | 11.2-24 |
AG rear tires | 16.9-30 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 7940 lbs or 3601 kg |
Length | 152 inches [386 cm] |
Width | 73 inches [185 cm] |
Height | 102 inches [259 cm] |
Wheelbase | 88 inches [223 cm] |
Ground clearance | 16 inches [40 cm] |
Turning radius | - |
Rear tread size | 56 to 71 inches |
Front tread size | 59 to 71 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 254 ci or 4.2 L |
Cylinders | 4 cylinders |
Engine power | 64 hp or 47.7 kW |
Engine RPM | 2200 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 20 gal or 75.7 L |
Oil capacity | - |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | Zetor Proxima 6441 Parts |
Batteries number | 1 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | - |
Ground force | - |
Charging system | - |
Charging Volts | - |
Charging Amps | - |
Trans system | - |
Trans type | mechanical shuttle |
Trans gears | 12 forward and reverse |
Clutch system | 304.8mm hydraulic cerametallic disc |
Wheel drive | 4x4 MFWD 4WD |
Final drive | - |
Steering | - |
Braking system | - |
Cabin type | Two-post folding ROPS |
Differentiel lock | - |
System | open center |
Valves | 3 |
Pump flow | 14 gpm or 53.0 lpm |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | 2900 psi or 200.0 bar |
Max flow | 18 gpm or 68.1 lpm |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | - |
Fuel consumption | - |
Pulling power | - |
Claimed power | 60 hp or 44.7 kW |
Real power | - |
Engine @RPM | - |
PTO Clutch | - |
Rear PTO | independent |
Rear PTO RPM | 540 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | - |
Hitch system | position and draft control |
Rear hitch | II/I |
Rear hitch lift | 6830 lbs or 3098 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 MT645C service repair manual
- Find All mechanical and electrical parts and accessories of Challenger MT645C farm-tractor here
- Get your Zetor Proxima 6441 manual book version
- Cabine, electrical And mechanical parts for Zetor Proxima 6441 farm-tractor here