Swing Gearbox Fit for Excavator Komatsu PC120-6
Swing Gearbox Fit for Excavator Komatsu PC120-6
Swing gearbox is an essential component in excavators that plays a crucial role in the excavating process. It is responsible for the rotation of the excavator's upper body, which enables the operator to move the arm and bucket to the desired location. Here are some key features and functions of the swing gearbox:
Swing Gearbox Features and Functions
- Enables the rotation of excavator's upper body.
- Provides greater control and accuracy in excavation projects.
- Allows for smooth and efficient movement of the arm and bucket.
- Can handle heavy loads and withstand tough working conditions.

The swing gearbox is installed in the excavator's upper body near the cab section. Its positioning is critical as it affects the excavator's overall stability and performance. Here are some key details about the installation and function of the swing gearbox:
Installation and Function of Swing Gearbox

- The swing gearbox is mounted on the excavator's slewing ring and connected to the hydraulic system.
- It rotates the upper body of the excavator and provides power to the arm and bucket.
- The gearbox is equipped with a brake system, which prevents the upper body from rotating unintentionally.
- The gearbox's gears are carefully designed to withstand heavy loads and provide smooth operation.
Our swing gearbox is designed to fit the Excavator Komatsu PC120-6 perfectly. Before purchasing, you need to ensure the following parameters:
Swing Gearbox Parameters
| Parameter | Description |
|---|---|
| Excavator Model | Ensure that your excavator is Komatsu PC120-6 or compatible with the gearbox specifications. |
| Swing Circle Diameter | Determine the diameter of your excavator's swing circle to ensure the perfect fit. |
| Weight | Ensure that the gearbox can handle your excavator's weight and workload. |
If you notice any of the following signs, it's time to replace your swing gearbox:
Signs that you need to replace your Swing Gearbox
- Unusual noises or vibrations coming from the gearbox.
- Difficulty in rotating the excavator's upper body.
- Leakage of hydraulic fluid or damage to gears.
Proper maintenance of your swing gearbox can significantly extend its lifespan. Here are some tips to keep your gearbox in optimal condition:
Maintenance Tips for Swing Gearbox
- Regularly check the gearbox's oil level and replace the oil every 500 hours of operation.
- Ensure that the gearbox's seals and gaskets are in good condition and replace them if necessary.
- Inspect the gearbox's gears for signs of wear and replace them if needed.
- Regularly clean the gearbox to prevent dirt and debris from damaging the gears.
Although our swing gearbox is designed to fit Excavator Komatsu PC120-6, it is compatible with many other excavator brands and models. Here are some of the most common brands and models that we can adapt:
Compatible Excavator Brands and Models
- Caterpillar: 320, 330, 345
- Komatsu: PC60, PC130, PC200, PC300
- Hitachi: EX200, EX300, EX400
At our company, we specialize in producing high-quality spare parts for excavators and bulldozers. We use advanced production equipment and technology to produce a wide range of products, such as walking reducers, rotary reducers, gears, and shafts. Our team of experienced professionals ensures that our products meet the highest quality standards. With over 12,000 parts suitable for 589 different machine models, you can trust us to provide the right parts for your machine.
Author: Miya
Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port


