Komatsu D51EXi-22 Crawler Dozer

Cab Top GNSS Antenna : No blade mounted GNSS antenna(s), cables to worry about damaging with cab top GNSS antenna. Reduced risk of theft due to low visibility as viewed from ground level.

Stroke Sensing Hydraulic Cylinders:Robust stroke sensing hydraulic cylinders employ proven Komatsu sensor technologies for accurate finish grade performance. Stroke sensing angle cylinder allows machine control system to know the angle of the blade.

Hydrostatic Transmission (HST) Control System:The HST controller monitors engine output and work equipment/travel load. It controls HST pump and motor displacement to provide the optimum speed and drawbar pull. Power to both tracks during turns and counter-rotation makes the D51 extremely maneuverable.

HST with Electronic Control:The D51 is equipped with a Komatsu-designed Hydrostatic Transmission (HST) that allows Quick-Shift or variable speed selection. The HST consists of dual-path closed-circuits with two variable displacement piston pumps and two variable displacement travel motors. Hydrostatic steering eliminates steering clutches and brakes, providing smooth powerful turns. Fully electronic control provides full automatic shifting and enables smooth control. Engine speed is controlled using an electronic fuel control dial.

Electronic Controlled Hydraulic System EPC Blade Control Joystick: Blade control joystick uses the EPC valve and joystick. EPC control combined with the highly reliable Komatsu hydraulic system enables superb fine control. A switch is used to angle the PAT blade. A button to activate float is also provided.

Closed-center Load Sensing Sytem CLSS Hydraulic System: With CLSS hydraulics, blade lever stroke is directly proportional to blade speed, regardless of the load and travel speed. This results in superb fine controllability.

Hydraulically-driven Swing-up Fan:The D51i-22 utilizes a swing-up fan with a gas strut-assisted lift locking system to provide easy access to the (side-by-side) radiator, oil cooler, and charge air cooler. The swing-up feature makes it easier to access cooling cores. The hydraulic fan has a “cleaning” mode. The fan rotates in the reverse direction and helps to clear off objects in front of the cooling areas. The fan is protected by thick steel louvers and an additional fan screen for added durability.
130 HP @2200rpm
27,381 LB
3.5-3.8 YD

Komatsu D51EXi-22 Crawler Dozer

Category: Dozers
Manufacturer: Komatsu

Intelligent Machine Control machines have the following advantages over dozers with external grade control systems.


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