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SEM660D Wheel Loader

SEM660D Wheel Loader

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Last Updated : 2019-04-12
Operating Weight 20 000kg
Rated power 178kw
Bucket capacity 3.3-5.5m³
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Optimized Engine

  • Low speed engine with E-fan provides increased operating efficiency

  • Enhanced fuel pre-filter eliminates water and contaminant from fuel for best fuel system protection

  • The 93 desert type air cleaner provides machine reliability in most severe applications. Oil-bath type oil filter is optional

Efficient Hydraulic System

  • The advanced load sensing hydraulic system with flow sharing circuits improves efficiency

  • World Class hydraulic components ensure high reliability

  • The optimized hydraulic system paired with the drive train reduces machine cycle time and increases productivity

  • Relocated hydraulic oil tank ensures hydraulic pump’s life

Operator Station

  • Premium operator station improves cab sealing and visibility

  • Sliding side window and AC with fresh air circulation provide operator comfort

  • Integrated relays and fuse panel. Single cabin harness connection plug provides easy service access

  • Joystick hydraulic control for easy and precise operation命

  • Multi-function instrument dashboard with 3-level alarm

  • Adjustable suspension seat

Reliable Drivetrain

  • Countershaft transmission with upgraded core components provides high reliability

  • Large rim-pull in 1st gear and higher speed in 2nd gear provide high efficiency for load and carry applications

  • Clutch cutoff selection switch ensures stable and safe operation

  • The SEM designed and built axle equips with 10 calipers (6 for front and 4 for rear), it delivers better brake performance and longer service life

Advanced Cooling System

  • The standard cooling package provides high reliability in 43°C ambient conditions. An optional package is available for 50°C ambient conditions

  • Shock pad mounts ensure reliability under severe applications

Solid Structure

  • Structures undergo Finite Element Analysis (FEA) and On Machine Stress Analysis (OMSA) to ensure durability

  • Performance Series (PS) buckets improve loading capability

  • Steering robber stopper design provides protection for frame


  • Torque convertor is isolated from transmission making it easy to service

  • Simple structure countershaft transmission delivers low maintenance cost

  • Centralized lubrication points reduce maintenance time

  • System pressure test ports are standard

  • Easy access to external air charge connecting port

  • Engine hood grill opens for easy service access

  • It is easy to change brake discs with new split type caliper


  • Safety design complies with all regulatory requirements

  • Caterpillar Production System (CPS) leveraged in manufacturing process

  • 3-point touching design provides convenient operator entering to cabin

  • Backup alarm and beacon ensure machine safety

  • Environment-friendly painting process


Items SEM660D
Main Specifications
Rated Loadkg6 000
Operating Weight with Standard Bucketkg20 000
Bucket Capacity3.3-5.5
Wheel Basemm3 350
Overall Dimension (outside of tire)mm8 414X3 370X3 458
Operating Specifications
Breakout Force (GRD)kN183
Dump Clearancemm3 048
Articulated Angle°38±1
Transmission Type Countershat, power shift
Transmission Gears F4/R4
Torque Converter Type Single stage 3 elements
Maker & Type TR200
Forward I/ Reverse Ikm/h7.4/7.4
Forward II/ Reverse IIkm/h14/14
Forward III/ Reverse IIIkm/h22/22
Forward IV/ Reverse IVkm/h38/38
Main Drive Type Spiral bevel gear, single stage
Final Drive Reduction Type Planetary type, single stage
Rear - Oscillating +/-°±11
Model WD10G240
Rated PowerkW178
Rated Speedr/min2 000
Implement Hydraulic
Implement System Type Single load sensing flow sharing system
Boom Raise Times5.3
Hydraulic Cycle Time (rated payload)s9.7
System Presure SettingMpa18
Brake System
Service Brake Dry & caliper, air to oil control
Parking Brake Drum type shoe brake,spring applied & oil released
Steering System
System Type Flow amplifying
Steering Pump Type Piston pump
System Presure SettingMpa18
Steering Angle (L/R)°38±1
Size 23.5-25
Type Bias
Layer 20
Textured Type L3/E3

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