en.Wedoany.com Reported - John Deere recently introduced two new wheel loaders, the 844 X-Tier and 904 X-Tier, further expanding its high-spec product line.
These production-class loaders are equipped with top-tier configurations and technologies, including an electrified drivetrain, intelligent machine controls, and an optional operator perception system, designed to help operators improve material handling efficiency while reducing fuel consumption. Previously, other X-Tier models in Deere's lineup included the 644, 744, 824, and 944 X-Tier.
Both the 844 and 904 X-Tier feature the John Deere Electric Variable Transmission (EVT). This technology replaces the torque converter and traditional transmission with electronically managed power, using two electric motors and an inverter to manage torque, ground drive force, and travel speed. Deere states that compared to P-Tier models, EVT delivers smoother operation, faster response, single-pedal control, and higher efficiency in demanding conditions. Additional EVT features include Coast Control, which supports single-pedal truck and hopper loading with four settings ranging from torque converter feel to hydrostatic feel; Cruise Control, which maintains a constant ground speed; and Warmup Logic, which automatically increases engine RPM and uses the clutch to warm up the transmission.
The newly added Pile Slip Assist proactively engages the differential lock before approaching the pile, reducing tire slippage, improving bucket fill, and shortening cycle times. Deere says this feature lowers total cost of ownership by reducing tire wear, one of the largest cost drivers in this size class. The tire pressure monitoring system keeps operators informed of inflation pressure, further extending tire life.
The company states that larger buckets made from higher-strength steel allow operators to move more material per pass compared to P-Tier models. The loaders offer two operating modes to balance efficiency and output based on application needs: Standard mode enables fuel savings of up to 15%, while High-Performance mode boosts productivity by up to 5% for high-demand tasks. Deere says that combined, these improvements can reduce total cost of ownership by up to 4% compared to the previous generation.
The optional Advanced Vision System (AVS) and Advanced Object Detection help expand the operator's field of view, enhancing on-site safety. AVS extends side and rear visibility by mounting two digital cameras on the rearview mirrors. Advanced Object Detection emits an audible alert when detecting objects behind the machine and adds dynamic reverse projection path lines to help operators visualize the reverse path based on articulation angle. Side and rear camera views are integrated into a single display inside the cab.
All daily maintenance points, including the fuel fill port, are located on the left side of the machine. The standard automatic lubrication system integrates with the machine's diagnostic system, helping save time and operating costs. The company says the stacked cooling package enables direct airflow, minimizing debris buildup. The 844 and 904 X-Tier wheel loaders are supported by the John Deere Operations Center, remote diagnostics, and a range of service and maintenance plans. Deere offers a 5-year/15,000-hour warranty on qualified electronic drivetrain components.
Specifications for the John Deere 844 X-Tier wheel loader: Net peak power 422 hp @ 1400 rpm, engine John Deere JD14, operating weight 72,713–75,067 lb., bucket capacity 6.3–8.5 cu. yd., hinge pin height 15 ft 1 in, dump reach at 45° 7 ft 8 in.
Specifications for the John Deere 904 X-Tier wheel loader: Net peak power 442 hp @ 1400 rpm, engine John Deere JD14, operating weight 80,063–80,321 lb., bucket capacity 9.80–10.25 cu. yd., hinge pin height 15 ft, dump reach at 45° 7 ft 11 in.
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