17 Ton Crawler Bulldozer Sem816D Sem822D Dozer with Ripper

Hydrostatic transmission technology

• Adopt German Rexroth’s new generation of integral and integrated control valve drive pump, travel motor, simplify pipeline design, and further improve reliability 
• High pressure hose, reliable and durable. Control technology, precise control and high transmission efficiency
• The hydrostatic oil tank and the working hydraulic oil tank are combined into one, which improves the filtration precision and cooling capacity of the hydraulic system, improves reliability and reduces maintenance costs.
• Eliminates torque converter, gearbox and rear axle box, saving 60% in maintenance costs
• In-situ steering, power steering, stepless speed change, save working time and greatly speed up work efficiency 

Large capacity SU shovel

• SU shovel combines the advantages of straight shovel and U-shaped shovel, which not only has the function of straight shovel leveling, but also is compatible with the large capacity of U-shaped shovel.
• L-type push arm, the push arm on each side is connected with the push rod to form the switch of the English letter L, which reduces the use of casting and forging and has higher strength
• The blade adopts a box-type structure, and the force point is additionally reinforced, and the strength is higher
• Optional Dual Link Push Arm

Long life four wheels

• Four-wheel and one-belt products, high reliability and long life, provide a variety of track shoe configurations to meet different application conditions
• The lubricating oil is sealed in the copper sleeve, and the carrier rollers, rollers and idlers are maintenance-free for life
• The final drive adopts one-level spur gear and one-level planetary transmission (two-level spur gear is commonly used in the industry), with large transmission ratio, large speed ratio, high transmission efficiency and low maintenance cost
• Braking system with wet multi-disc friction linings doubles the reliability
• Engineered final drives for twice the reliability

Modular Cooling System

• Optimized water tank heat dissipation and hydraulic oil radiator, higher efficiency, can meet 43 degrees Celsius environmental capability
• Modular design, easy disassembly, oil cooler can provide heat dissipation for hydrostatic system and working hydraulic system at the same time
• Louvered front grille, good heat dissipation effect, can be opened in one direction, more convenient for maintenance
• Desert type optional sand baffle to improve the service life of the radiator

maintenance

• ECM fault diagnosis system, optional fault code display
• Lifetime maintenance-free rollers, carrier rollers and idlers
• Eliminates torque converter, transmission and rear axle box, reducing maintenance costs
• Hydrostatic oil replacement cycle is 2000 hours, reducing maintenance costs
• The working valve is externally placed in the hydraulic oil tank, which is easy to check and maintain
• Three-level alarm system, automatic fault diagnosis
• Added P/S/E power mode indicator switch