Бульдозер 822D

Hydrostatic Drive System

• Upgraded hydrostatic system not only leverages Caterpillar automatic, dual path, hydro-static drive with electronic control technology of the third generation TTT, but also increas-es efficiency and reliability


• Adopt Rexroth German new generation drive pump to combine control valve, trackmotor, simplified hose line design, continue to increase the reliability


• Caterpillar high pressure hose provides reliability and durability. Caterpillar control technology provides accurate control and high transmission efficiency


• Integrated the hydrostatic oil tank and implement hydraulic oil tank to improve filtratedprecision and cooling capability of hydraulic system, increasing reliability and reducingmaintenance cost


• Maintenance costs are reduced by 60% when compared competitors with torque converter and transmission and rear axle


• Counter rotation, power turn and infinitely variable speed save lots of time, increasing working efficiency

Semi-Universal Blade

• SU blade combines the excellent penetration of the S blade and the high production capacity of the U blade


• Designed for superior load retention and penetration in tightly packed materials


• L-shaped push arms bring the blade closer to the machine, providing excellent maneuverability, balance and blade penetration


• Blades feature a strong box section design, made from high tensile strength steel to stand up to the most severe applications

Undercarriage

•  Undercarriage is provided by China industry expert ensures high reliability and resistance to wear


• Carrier rollers track rollers and idle rollers are all maintenance free


• Planetary final drive design delivers increased torque ratio for higher transmission efficiency and lower maintenance cost


• Durable final drive bearings and multiple wet discbrakes provide reliability, reduce system heat and extend overall life

Structures

• Machine structures are analyzed using Finite Element Analysis (FEA) and On Machine Stress Analysis (OMSA) to identify and protect high stress areas


• Advanced structure welding technique, relieving welding stress.