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Dozer 850J

Product catalog summary

Engine Specifications:
The 850J Dozer is powered by a John Deere PowerTech PlusTM PVX 6068 engine, featuring a variable-geometry turbocharger, exhaust gas recirculation, and an air-to-air aftercooler. It is certified to EPA Tier 2 emissions standards. The engine delivers a gross power of 143 kW at 1,800 rpm and a net power of 152 kW at the same rpm. It has six cylinders with a displacement of 6.8 liters and a maximum net torque of 915 Nm at 1,500 rpm.

Transmission:
The dozer features an automatic, dual-path hydrostatic drive with a load-sensing feature that adjusts speed and power according to load conditions. It offers infinite travel speeds up to 10 km/h (6.3 mph) and has independently selectable reverse speed ratios. The system relief pressure is 45,850 kPa (6,650 psi).

Final Drives:
The double-reduction, planetary final drives transfer torque over three gear sets, providing a total ratio of 44.7483:1. The maximum drawbar pull is 344 kN.

Steering and Brakes:
The dozer uses single-lever steering with hydrostatic steering for full power turns and variable track speeds. It features hydrostatic (dynamic) braking and an automatic parking brake that engages under specific conditions for safety.

Hydraulic System:
The load-sense hydraulic system has a system relief pressure of 3,625 psi and a differential pressure of 275 psi. It uses a piston pump with a maximum flow of 163 l/min at unloaded high idle.

Capacities:
The fuel tank capacity is 371 liters, and the hydraulic system reservoir holds 105.6 liters. Other capacities include 35 liters for the cooling system and 26.5 liters for engine lubrication.

Undercarriage:
The undercarriage features a seven-roller track frame with John Deere Dura-TraxTM for maximum wear resistance. The ground contact area is 33,755 cm² with a ground pressure of 52.5 kPa.

Blade Specifications:
The dozer is equipped with an outside dozer Semi-U blade with a width of 3,251 mm and a capacity of 5.57 m³. The blade lift height is 1,150 mm, and the digging depth is 600 mm.

Optional Equipment:
Options include various blade types, track configurations, and additional guards and counterweights to enhance performance and protection.

Dimensions:
The overall height to the roof is 3,180 mm, and the overall length with the blade is 5,377 mm. The blade width is 3,251 mm, and the blade height is 1,422 mm.

Additional Information:
The document notes that all dimensions are in millimeters unless otherwise stated and that technical data and design are subject to change without notice.

Catalog excerpts

SURFACE & UNDERGROUND • Gross Power:152 kW • Net Torque:915 Nm • Operating Weight: 20 800 kg

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ENGINE Type John Deere PowerTech Plus™ PVX 6068 with variable-geometry turbocharger, exhaust gas recirculation, and air-to-air aftercooler; certified to EPA Tier 2 emissions. Gross Power 143 kW SAE @ 1,800 rpm Net Power 152 kW SAE @ 1,800 rpm Cylinders 6 Displacement 6.8 l Maximum Net Torque 915 Nm @ 1,500 rpm Lubrication Pressure system with full-flow spin-on filter and oil-to-water cooler. Air Cleaner Dual-stage dry type with tangential unloader. Electrical System 24 volt with 80 amp alternator (cab) Batteries (two 12 volt) 950 cold-cranking amps, 190 min reserve capacity Cooling Fan Automatic...

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Blade Brush Guard 87 kg *Included in SAE operating weight. Dimensions & Parallelogram Ripper Hydraulic Pitch Adjustment and ESCO Ripper Tips Weight P Maximum penetration Q Maximum clearance under tip R Overall length, lowered position R1 Overall length, raised position S Overall beam width T Slope angle (full raise) U Ripping width V Distance between shanks Blade Type A Overall Height to Roof Overall Height to Exhaust Stack B Tread Depth with Single-Bar Grouser Moderate Duty Extreme Duty D Blade Width E Blade Height F Blade Lift Height G Blade Digging Depth H Blade Tilt (uses tilt jack) I Overall...

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BELL INTERNATIONAL: Tel: +27 (0) 35-907 9431 E-mail: [email protected] All dimensions are shown in millimetres, unless otherwise stated between brackets. Under our policy of continuous improvement, we reserve the right to change technical data and design without prior notice. Photographs featured in this brochure may include optional equipment.

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Dozer 850J

Dozer 850J

Catalog excerpts

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