Challenger MT875B

Last Updated: July 2024

Overview

The Challenger MT875B, manufactured by Challenger (part of AGCO), is predominantly used for commercial agriculture. It is powered by a 6-cylinder, liquid-cooled inline Caterpillar C18 engine. The MT875B offers a considerable engine displacement of 1105 ci, providing a tested power output of 431.02 hp at 2100 RPM. With a Turbocharged induction system and a full power shift transmission, the tractor ensures efficient performance. The dimensions of the MT875B are significant; it measures an overall length of 265.9 inches, width of 140.9 inches, and height of 138.1 inches ensures it can handle a variety of tasks. The tractor has an operating weight of 43,700 lbs without ballast, which can increase to 50,000 lbs with ballast. It utilizes a closed center PFC hydraulic system with high flow option delivering up to 82.6 HP. The chassis configuration is tracklayer-rubber tracked with electro-hydraulic differential steering.
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Key Specifications

Category: Agricultural

Power Output: 431.02

Transmission: Cat Powershift (Full Power Shift)

Operating Weight: 43700

Fuel Type: Diesel

Challenger MT875B vs. Similar Tractors

Power Output
Excellent
Greater than 95% of similar tractors.
Operating Weight
Average
Greater than 66% of similar tractors.

Technical Specifications

Engine

Manufacturer
Caterpillar
Model
C18
Cooling Type
Liquid-cooled
Cylinder Orientation
Inline
Valve Configuration
24-valve
Fuel Type
Diesel
Induction Type
Turbocharged
Cylinders
6
Displacement (ci)
1105
Bore (in)
5.709
Stroke (in)
7.205
Rated RPM
2100
Power Output (hp)
431.02

Transmission

Type
Cat Powershift (Full Power Shift)
Forward Gears
16
Reverse Gears
4
Total Gears
-

Dimensions

Length (in)
265.9
Width (in)
140.9
Height (in)
138.1
Operating Weight (lb)
43700

Power Take-Off (PTO)

PTO Type
-
PTO Speed 1 (rpm)
-
PTO Speed 2 (rpm)
-
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
-
Drive Type
-
Steering Type
-
Coolant Capacity (qts)
-
Front Tire Diameter (in)
-
Front Tire Width (in)
-
Rear Tire Diameter (in)
-
Rear Tire Width (in)
-
Front/Rear Rim Diameter (in)
-
Tire Type
-
Manufacture - End Year
-
Hitch Type
No 3-point hitch available
Hitch Category
-
Hitch Position
-
Hitch Capacity (lb)
-
Operator Station Type
-
Starter Type
Electric Starter (12V)
Brake Type
-
Hydraulic System Type
Closed Center PFC

Test Results

Nebraska Tractor Test Laboratory - Test Date: April 25 to May 4, 2005

Maximum Power and Fuel Consumption

  • Maximum Power: 431.02 HP (321.41 kW) at 2100 rpm
  • Fuel Consumption at Maximum Power: 19.81 Gal/hr (75.00 l/h) with a fuel efficiency of 0.460 lb/hp.hr (0.280 kg/kW.h)

Drawbar Performance

  • Power at Maximum Pull (8th Gear): 431.02 HP (321.41 kW) with a drawbar pull of 28554 lbs (127.01 kN) and speed of 5.66 mph (9.11 km/h) at 2100 rpm
  • Fuel Consumption at Maximum Pull: 0.460 lb/hp.hr (0.280 kg/kW.h) with a fuel efficiency of 15.27 Hp.hr/gal (3.01 kW.h/l)

Torque and Engine Performance

  • Maximum Torque: 1,366 lb-ft (1,852 Nm) at 2100 rpm
  • Torque Rise: Significant increase as engine speed drops, demonstrating strong lugging ability in tough conditions.

Hydraulic Performance

  • Maximum Pump Delivery Rate: 44.5 GPM (168.5 l/min) at minimum pressure and rated engine speed
  • Hydraulic Power: 67.5 HP (50.4 kW) at a delivery pressure of 2692 psi (186 bar) with high flow option delivering up to 82.6 HP (61.6 kW)

Overall Efficiency

  • Drawbar Power Efficiency at 8th Gear: 321.41 kW producing 431.02 HP and pull of 28554 lbs
  • Fuel Consumption at Standard Conditions: 19.81 Gal/hr (75.00 l/h) at peak performance settings



NTTL.(2005).Nebraska OECD Tractor test 1879 for Challenger MT875B Diesel. Lincoln, NE:Nebraska Tractor Test Laboratory. Retrieved from digitalcommons.unl.edu/tractormuseumlit/355

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