SEM638 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

Engine----Cummins6BT5.9

Rated speed---- 2400rpm

Rated power---- 92kw

Cylinder*bore × stroke----6*102mm×120mm

Max. torque ----- 425Nm

Displacement---- 5.88L

Transmission system

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

Transmission-----SEM TR-150 countershaft

Gearshift------ Ⅰ Ⅱ  Ⅲ  IV

Forward------- 7.7  14.2  26.5  43.6(km/h)

Reverse------ 9.7  32    

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

Pilot controlling

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

Performance specifications

Breakout force -----128kn

Max. drawing force -----97kn

Operating weight -----9420kg 

Bucket capacity -----1.7 / 2.5m³