
The Swing Gearbox, also known as the Swing Drive, is an essential component of an excavator. It is responsible for controlling the rotation of the excavator's upper structure and provides power to the hydraulic motors. The gearbox consists of several gears, bearings, and seals that work together to ensure smooth and efficient operation of the excavator.
Here are some key features and functions of the Swing Gearbox:

The Swing Gearbox is typically located at the base of the excavator's upper structure. It is attached to the slew bearing, which allows the upper structure to rotate smoothly. The gearbox receives power from the engine and transfers it to the hydraulic motors to enable the excavator to rotate.
The gearbox works on the principle of a planetary gear system. The input power from the engine is transferred to the sun gear, which then drives the planet gears. These gears, in turn, drive the ring gear, which causes the upper structure to rotate.
Our Swing Gearbox is specially designed to fit the Caterpillar E200B excavator model. Before purchasing the gearbox, it is essential to consider the following parameters:
| Parameter | Description |
|---|---|
| Excavator Model | Caterpillar E200B |
| Swing Ratio | 3.5 or 4.0 |
| Number of Teeth | 112 |
| Flange Diameter | 424mm |
| Oil Seal Size | 80x110x12mm |
Over time, the Swing Gearbox may experience wear and tear due to constant use. Here are some signs that indicate that it is time to replace the gearbox:
Regular maintenance of the Swing Gearbox can increase its lifespan and ensure smooth operation. Here are some tips for maintaining the gearbox:
Our Swing Gearbox can also be used with the following excavator models:
We are a leading manufacturer of high-quality spare parts for excavators and bulldozers. Our company is equipped with various production equipment and advanced processing technology. We have a professional team that specializes in production design and marketing. Our main products include walking reducers, slewing reducers, gears, shafts, planetary carriers, wheel hubs, pump casings, rotary shaft seats, end covers, gaskets, bearings, and oil seals. We produce more than 12,000 types of transmission parts for excavators and bulldozers, which are suitable for more than 532 machine models.
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