SEM822D

Key Specification
Advantage
Application

Operating Weight (w. SU blade, Ripper): 18,230kg
Ground Pressure (GB/T 30965): 71.2kPa
Minimum Ground Clearance (Excludes Grouser Height): 400mm

Highly Efficient and Reliable
Outstanding Operator Comfort
Best-in-class Serviceability

Coal
Port
Railway / Highway / Airport
Municipal Construction
Agriculture
Water Conservancy / Hydropower
Waste
Forestry

Feature
Specification
Video
Photo
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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

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 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.

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

Cat ® Product Link™

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

Model
Model	822D
Configuration	STD	LGP	CH	DS	WH	FR
Main Specifications
Operating Weight (w. SU blade, Ripper)	26,520kg	27,880kg	27,280kg	27,140kg	28,560kg	28,280kg
Ground Pressure (GB/T 30965)	71.2kPa	43.0kPa	62.4kPa	41.7kPa	43.8kPa	76.5kPa
Minimum Ground Clearance (Excludes Grouser Height)	400mm
Gradeability	30°
Engine
Engine Model	WD10G178E25
Advertised Power (ISO 14396)	175kW
Rated Speed	1,800r/min
Powertrain
Transmission Type	Dual-path, closed loop electronically controlled hydrostatic drive system
Travel Speeds - Forward and Reverse	Infinitely variable speeds 0-10 km/h
Steering and Brake	hydrostatic steering; wet,multi-disc brake
Implement Hydraulic
Type	center close, pilot control
System Pressure	19MPa
Pump Type	Gear pump
Blades
Blade Type	SU/S	LGP S	Coal/U	LGP S	WH	Forestry
Blade Capacity (ISO 9246)	6.4m³/5.8m³	5.5m³	9.2m³/7.5m³	5.5m³	12.7m³	8.7m³
Blade Width (w/End Bit)	3,660mm/3,800mm	4,510mm	3,900mm	4,510mm	4,510mm	3,660mm
Blade Height	11,520mm/1,510mm	1,350mm	1,620mm/1,420mm	1,350mm	1,945mm	1,830mm
Blade Lifting Height	1,140mm	1,165mm	1,140mm	1,165mm	1,165mm	1,140mm
Blade Digging Depth	570mm	665mm	570mm	665mm	665mm	570mm
Blade Tilt Height (Middle Hole)	540mm	640mm	550mm	640mm	640mm	540mm
Blade Weight (w/o Push Arm)	1,645kg	2,085kg	2,242kg	2,085kg	2,442kg	2,050kg
Minimum Turning Radius	4,215kg	4,300kg	4,500kg	4,300kg	4,300kg	4,215kg
Single Shank Rippers
Type	Parallelogram (with pitch adjustment)
Maximum Penetration (Shank Pinned in the Top Hole)	860mm
Maximum Clearance Under Tip (Shank Pinned in the Bottom Hole)	640mm/742mm	N/A	640mm	742mm	615mm	615mm
Ripper Weight	2,390kg	N/A	2,390kg	N/A	N/A	2,390kg
Undercarriage
Track Shoe Width	560mm	915mm	660mm	915mm	915mm	560mm/660mm
Track Shoes Number (Each Side)	40	45	40	45	45	40
Track Rollers Number (Each Side)	7	8	7	8	8	7
Carrier Roller Number (Each Side)	2	2	2	2	2	2