Swing Gearbox Fit for Excavator Kobelco SK330-8
Swing Gearbox Fit for Excavator Kobelco SK330-8
The swing gearbox, also known as the swing drive or swing motor, is a critical component in excavators that allows for the rotation of the upper structure of the machine. Here are some important features:
- Transfers power from the hydraulic motor to the excavator's slewing ring
- Controls the excavator's swing motion
- Enables precise and smooth movements during operation

Swing Gearbox Installation and Functionality
The swing gearbox is located at the base of the excavator's upper structure. It is attached to the slew ring and works in conjunction with other components to enable the excavator's swing motion. Here are some key functionalities:
- Transfers hydraulic pressure from the pump to the swing motor
- Converts hydraulic energy into mechanical energy to move the excavator's upper structure
- Provides the excavator with the ability to make 360 degree rotations

Compatibility with Excavator Kobelco SK330-8
Our swing gearbox is specifically designed to fit the Excavator Kobelco SK330-8. Before purchasing, please ensure the following parameters:
| Parameter | Description |
|---|---|
| Excavator Model | Ensure compatibility with Excavator Kobelco SK330-8 |
| Swing Ratio | Ratio of hydraulic motor speed to slew ring speed |
| Hydraulic Flow Rate | Flow rate of hydraulic fluid in the system |
When to Replace Swing Gearbox
There are several signs that indicate the need to replace the swing gearbox:
- Unusual noises or vibrations during operation
- Leakage of hydraulic fluid from the gearbox
- Reduced efficiency and power output
- Inability to smoothly rotate the excavator's upper structure
Maintenance to Extend the Lifespan
Proper maintenance of the swing gearbox can extend its lifespan. Here are some important maintenance tips:
- Regularly check for leaks and cracks
- Ensure that the gearbox is properly lubricated
- Clean the gearbox and surrounding area to prevent debris from entering
Compatible Excavator Brands and Models
Our swing gearbox is compatible with various excavator brands and models, including:
- Caterpillar
- Komatsu
- Hitachi
- Volvo
- Hyundai
Please note that we do not sell products for the above-mentioned brands and models. They are only listed for customer reference and convenience.
About Our Company
We are a company specialized in producing high-quality spare parts for engineering machinery such as excavators and bulldozers. Our team comprises of highly skilled professionals who are dedicated to producing top-grade products that meet our clients' needs. Our main products include:
- Walking deceleration assembly
- Rotary deceleration assembly
- Gears, shafts, and transmission parts
- Planetary gears, wheel hubs, pump shells, slewing shaft seats, and end covers
- Gaskets, bearings, and oil seals
We have produced over 12,000 types of transmission parts for excavators and bulldozers, which are compatible with 673 different machine models.
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


