Komatsu PC300-7 207-27-71140 708-8H-00320 Excavator Travel Gearbox Hydraulic Drive Unit

Komatsu PC300-7 207-27-71140 708-8H-00320 Excavator Travel Gearbox Hydraulic Drive Unit

The travel gearbox is a critical component in an excavator’s undercarriage system, responsible for transmitting power from the hydraulic motor to the tracks or wheels, enabling precise movement and heavy-duty operation. Its reliability directly impacts the machine’s productivity in mining, construction, and earthmoving applications.

List of spare parts

High-quality excavator travel gearboxes use high-strength alloy steel forged gears. After carburizing and quenching treatment, the surface hardness can reach HRC58-62, which has high wear resistance and impact resistance and can withstand long-term heavy-load operation. The internal lubricating oil circuit adopts a forced lubrication design to ensure that gears and bearings are fully lubricated during high-speed operation, reducing friction loss. At the same time, the gearbox shell is made of die-cast aluminum alloy or cast iron, which has both light weight and deformation resistance, adapting to the harsh outdoor construction environment. During maintenance, it is necessary to regularly check the oil level and oil quality to avoid gear sintering caused by oil shortage or oil contamination. The seals need to be replaced every 2000 hours to prevent leakage failures.

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Delivery

• 1.Outside packing: standard export carton packing;
• 2.According to orders, pack the spare parts one by one in a small plastic bag;
• 3.Put them into small carton boxes one by one;
• 4.Put the packed small carton boxes into bigger carton boxes one by one;
• 5.Put the bigger carton boxes into wooden boxes if necessary especially for
• the shipments by sea.

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