SEM 639 Wheel loader

Main Features

1, Engine: be reoptimized and rematched, improved efficiency and performance, improved cold start capacity.

2, Cooling: Designed by CRDC (Caterpillar China Research & Design Center), the cooling system brings end results of optimal cooling efficiency, increased fuel efficiency, less radiator pl ing even under extreme hot temperature or dusty work environment.

3, Transmission: Countershaft design; advanced structure, high transmission efficiency; durable, ease of service and numerous shifts allow high travel speed; two modes available for multiple operation, one for material handling and one for travel; refined for heavy duty application.

4, Axle: Meritor axle, reliability function.

5, Cab: Improved operator comfort and visibility; Reduced in cab noise, meet GB standard, Reliability improved; integrated FOPs/ROPs cab is available.

6, Electrical: Large capacity Delphi battery; High quality electrical components.

7, Structure: Finite Element Analysis (FEA) design, refined for heavy duty application.

8, Hydraulic: VALVE [CCMC (Caterpillar China Machinery Component) components; Single lever, joystick controlling (optional)]

            HOSE [CCMC hose, improved strength and reliability, optimized hose and tube routing]

Engine

Model -------- XC6110/12G5-SG90

Rated speed ------- 2300rpm

Rated power ------- 92kw

Cylinder bore × stroke --------6 × 110mm×125mm

Max. torque -------- 460n.m

Displacement -------- 7.13L

Transmission System

Torque converter -------- 3-element, single stage

Transmission ------- SEM TR-150 countershaft

Gearshift -------Ⅰ  Ⅱ  Ⅲ   IV

Forward -------7.4  13.7  25.3  41.5(km/h)

Reverse ------- 9.3  30.5    

Axle

Four wheel drive, front axle fixed, rear axle oscillating, oscillating angle of rear axle+/-12 degree

Hydraulic system

Working pressure -------16.5MPa

Boom lifting time ------- 4.82s

Bucket dumping time -------- 1.07s

Boom lowering time -------- 3.24s

Brake system

Service brake -------- Air assisted oil disc type four wheel brake

Parking brake ------- Spring applied air released inner hoof type

Steering system

Pivoting angle of frame -------- 38 degree

Load sensing hydraulic steering system

Tank capacity

Fuel tank ------- 151L

Hydraulic tank ------- 138L

Tire

Size ------- 17.5-25

Main technical specification

Operating weight ------- 9620kg

Bucket capacity -------- 1.7m³/2.5 m³ 

Breakout force ------- 128 KN

Max. drawing force ------- 90.8KN