Challenger is adding four new models to the MT500D Series of wheeled tractors for agricultural producers throughout North America. The new, redesigned tractors with 110 to 125 PTO hp are designed to meet the demands and challenging environments of today’s farming operations.

“The new Challenger MT500D Series tractors expand the Challenger line by offering even more choices in power, comfort and innovation,” says Conor Bergin, AGCO senior product specialist for high-horsepower tractors. “These tractors are more powerful than the previous Series and also are 6 to 8% more fuel-efficient, for a great blend of power and fuel economy. This makes them ideal for tough chores in the field and around the farmyard, whether chopping stalks, loading hay, mowing ditches, blading dirt or moving snow.”

In addition to a more powerful, more fuel-efficient engine, the tractors feature a redesigned, more ergonomic cab for improved comfort, with fingertip controls embedded in the armrest for easier operation. The cab features hydraulic cab suspension, which automatically adjusts for changing field conditions.

The new models join four other tractors in the MT500D Series, with horsepower ranging from 140 to 180 PTO hp, introduced in 2011.

All four new models, the MT515D, MT525D, MT535D and MT545D, feature Tier 4i emissions-compliant 6.6-liter engines. The engines use AGCO-exclusive second-generation e3 selective catalytic reduction (SCR) clean-air technology. The system monitors exhaust and adjusts diesel exhaust fluid (DEF) treatment in real time for improved emissions, minimal maintenance, and reduced fuel consumption. Increased horsepower comes from a larger engine, plus a boost in common rail (CR) injection system pressure from a Bosch pump.

“Higher injection pressure ultimately provides better response in terms of horsepower recovery as you lug down,” explains Bergin. “The torque response is far greater, so the tractor doesn’t slow down under tough conditions, plus you get improved fuel economy.”

Depending on the model, tractors are available with a choice of Techstar CVT (continuously variable), AutoPower 6 (24-speed, partial-powershift) or AutoPower 4 (16-speed, partial-powershift) transmissions for efficient power transfer. The Techstar CVT delivers clutch-less, step-less operation for no shifting between ranges, a 1200-hour service interval and limited moving parts for long life. The Autopower 6 and Autopower 4 semi-powershift transmissions also eliminate the need to engage the clutch when shifting between ranges.

The cab on the new tractors features an OptiRide Plus cab suspension system. This unique hydraulic suspension system relays information through an electronic control unit to automatically adjust to control bounce, rolling and pitching.

Inside the redesigned cab, a right-hand control armrest, multipad control and new multifunction joystick provide easy-to-reach, fingertip control and ergonomic design. A Datatronic CCD display offers functionality and is easier to read, so producers can accurately monitor and adjust tractor and implement settings.

For more information, visit http://www.challenger-ag.com.