SEM^™ 822D

Key Information

Category Track-type tractors

Operating Weight 24,000 kg

Ground pressure 71.2kPa

Ground clearance 400 mm

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Overview
Specifications
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Key Features

Overview

Efficient

Electronically controlled hydrostatic drive system and multi-function joystick provide high levels of performance and maneuverability.

Comfortable Operation

The cab is ergonomically designed to increase operator comfort and visibility. The advanced monitoring system tracks machine operating conditions and keeps the operator informed of all vital machine functions.

Reliable

Proven hydrostatic design combined with world class pump and motors results in a very reliable tractor. Undercarriage components are designed for longer life compared to leading competitor.

Ease of Service

SEM tractors are designed for easy access to reduce overall service time. The machine's electronic control module allows for quick troubleshooting.

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

Product Specifications for 822D

Model
- ModelSEM822D
Main Specifications
- Operating Weight24,000kg
- Ground Pressure71.2kPa
- Ground Clearance400mm
- Max. Slope30°
Engine
- Engine ModelWD12G240E206
- Rated Power175kW/235hp
Working Tool
- Blade TypeSU blade
- Blade Capacity6.4m³
- Blade Width3,660mm
- Blade Height1,520mm
- Max. Blade Digging Depth570mm
- Max.Blade Lift Ground Clearance1,140mm
- Max.Output Rimpull350kN
- Ripper TypeMulti-Shank Ripper Single- Shank Rippe
- Max. Digging Depth of Ripper860mm
- Max. Clearance Under Tip640mm
Powertrain
- Typedual-path, closed loop electronically controlled hydrostatic drive system
- Travel Speed-F/Rinfinitely variable speeds 0-10km/h
- Steering & Brakehydrostatic steering; wet,multi-disc brake
- Minimum Streeing Radius4,215mm
Undercarriage
- Track Shoe Width-Single560mm
- Track Shoe Quantity40
- Track Length On Ground2,948mm
- Track Gauge2,000mm
- Track Roller Quantity7
- Carrier Roller Quantity2
Hydraulic System
- Typeenter close, pilot contro
- Implement Hydraulic System Pressure19MPa
Service Refil Capacities
- Fuel Tank460L
- Cooling System45L
- Hydraulic Tank160L
- Pivot Shaft Case(each side)0.8L
- Final Drive(each side)40L