
Swing gearbox, also known as swing drive or swing motor, is an important component of an excavator. It is responsible for the rotation of the excavator's upper structure. The gearbox consists of a hydraulic motor, a planetary gear system, and a housing. The hydraulic motor generates the torque that drives the planetary gear system and the housing supports the entire assembly. The function of the swing gearbox is to enable the excavator to rotate 360 degrees.
The swing gearbox is installed between the excavator's upper structure and lower structure, and is responsible for driving the upper structure to rotate. The gearbox is connected to the machine's hydraulic system and is powered by hydraulic pressure.

Our Swing gearbox can perfectly fit Excavator Volvo VOL380. Before purchasing, the following parameters need to be confirmed:
| Parameter | Description |
|---|---|
| Machine Model | The specific model of the excavator |
| Swing Ratio | The ratio of the gearbox's output speed to its input speed |
| Motor Type | The type of hydraulic motor used in the gearbox |
| Torque | The amount of twisting force generated by the gearbox |
There are several signs that indicate when the swing gearbox of an excavator needs to be replaced:
Regular maintenance of the swing gearbox can significantly extend its lifespan. The following maintenance procedures are recommended:
Our swing gearbox is compatible with various excavator brands and models, including:
We are a company that specializes in producing high-quality spare parts for excavators, bulldozers, and other construction machinery. With our advanced production equipment, sophisticated processing technology, and high-quality production, design, and marketing teams, we offer a wide range of products, including walking reducer assemblies, rotary reducer assemblies, gears, gear rings, transmission shafts, planetary carriers, wheel hubs, pump housings, swivel shaft seats, end caps, washers, bearings, oil seals, and other supporting products. We have developed more than 12,000 types of transmission parts for excavators and bulldozers, which are suitable for 652 models.
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