SEM 668F Wheel Loader

Drivetrain Upgrade for Comfort and Reliability

Two-speed fully automatic transmission with forward-two/reverse-one gear setting and a rotary shift knob for easy operation. Fully automatic operating mode further reduces operator fatigue and improves comfort. The unique transmission protection function ensures greater safety and reliability at high working speeds. The new high-visibility, widened cab offers 20% more space, providing an excellent field of view and comfort; the auto climate control air conditioning enhances driver comfort. The single-plane, modular cooling system is reliable, efficient, and easy to maintain.

Powerful Lifting for Efficient Operation

The optimized working hydraulic system effectively increases boom lifting capacity. Standard single-lever pilot control with optional dual-lever fingertip pilot control offers flexible configuration and comfortable operation. A 9.8-second hydraulic cycle time enables quick machine response for more efficient loading and unloading. The fuel tank capacity is increased by 20% to extend machine working endurance. Various boom types and working attachments are available to meet diverse customer needs.

Extended Wheelbase for High Load Capacity

The 3.4-meter extra-long wheelbase design significantly improves full-turn tipping load and raises rated load capacity to 6.5 tons, better meeting heavy-duty working conditions. The 668F uses an end-face tooth structure on the drive shaft, effectively improving reliability. The large-span, center-articulated frame layout ensures strong torsional resistance and agile response. The newly optimized drive axle differential and sleeve bolts further enhance reliability.

Powerful, Eco-Friendly, and Fuel-Efficient

The China IV emission engine features an electronically controlled high-pressure common rail system, delivering upgraded emissions with low noise and fast response. The multi-mode working switch allows selection of different engine power curves based on application conditions for better fuel economy. Multi-stage diesel filtration with an in-oil water alarm device improves fuel adaptability. The low-speed-ratio flexible fan adjusts speed based on engine coolant temperature for quiet and energy-saving operation. The mature, reliable fixed-and-variable displacement hydraulic system supplies flow according to workload demand; the variable pump effectively reduces overall fuel consumption by 8%-10%.