Hydrostatic Crawler Bulldozer SEM822D

SPECIFICATION

HYDROSTATIC CRAWLER BULLDOZER SEM822D	PARAMETERS
Operating weight	24000 kg
Ground pressure	71.2 kPa
Engine model	WD12G240E206
Rated power	175 kW (235HP)
Blade type	SU-blade / S-blade
Blade capacity	6.4 m3 / 5.8 m3
Blade width	3660 mm / 3800 mm
Blade height	1520 mm / 1510 mm
Max. blade cutting depth	570 mm / 570 mm
Max. blade lift ground clearance	1140 mm / 1140 mm
Transmission type	dual-path, closed loop electronically controlled hydrostatic drive system
Travel Speed	infinitely variable speeds 0-10 km/h
Steering & Brake	hydrostatic steering; wet,multi-disc brake
Hydraulic system pressure	19 MPa

ADVANTAGE

Cat ® Product Link TM
• Cat® Product Link™ will support your business, and accurately convey information of the equipment to relevant personnel in a timely and effective manner for your better equipment management.
Hydrostatic Drive System
• Upgraded hydrostatic system not only leverages Caterpillar automatic, dual path, hydrostatic drive with electronic control technology of the third generation TTT, but also increases efficiency and reliability.
• Adopt Rexroth German new generation one case drive pump to combine control valve, track motor, 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 filtrated precision and cooling capability of hydraulic system, increasing reliability and reducing maintenance 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.
Comfortable Operation
• Counter rotation—Tracks counter rotate to provide best in class maneuverability.
• Powered turn—Machine maintains full power through turns to increase productivity.
• Cruise control — Operators can retain previous speed settings which makes operation easily.
• Multi-function joystick allows for counter-rotation, powered turn and cruise control.
• Pilot joystick control provides comfortable precise blade operation.
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 effi ciency and lower maintenance cost.
• Durable final drive bearings and multiple wet disc brakes 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.
Modular Radiator
• New advanced cooling system designed to meet -40°C to +50°C ambient temperatures capability
• Modular designed radiator, easy to maintain remove and repair
• Radiator grill provides better heatdissipation, easy access or maintenance
Maintenance
• Electronic Control Module (ECM) fault diagnosis system,automatic diagnosis of eight key parameters
• Monitoring system provides three levels of alarm,to indicate fault diagnosis
• Hydrostatic system has longer service interval (2000 hrs),reduces maintenance time by 50%
• Implement valve mounted outside of hydraulic tank provides easy access to check and service