Swing Gearbox Fit for Excavator Daewoo DH300-5
Swing Gearbox Fit for Excavator Daewoo DH300-5
A swing gearbox is an essential component of an excavator that is responsible for swing movement, which allows the operator to move the entire upper structure by means of a hydraulic motor and a pinion gear. Here are some specific functions and uses of the swing gearbox:
- Control the movement of the excavator arm, bucket, and cab
- Provide smooth and efficient operation of the excavator
- Ensure safety during excavation work by controlling the swing speed and swing angle
- Reduce wear and tear on the hydraulic system

Installation and Functionality
The swing gearbox is installed in the upper structure of an excavator and is responsible for controlling the swing movement. It works by transferring hydraulic pressure to the hydraulic motor, which drives the swing pinion gear that moves the upper structure of the excavator. Here is a diagram of the swing gearbox:

Compatibility
Our swing gearbox is specifically designed to fit the Excavator Daewoo DH300-5 model. Before purchasing a swing gearbox, it is important to determine the following parameters:
| Parameter | Description |
|---|---|
| Excavator model | The make and model number of your excavator |
| Swing ratio | The relationship between the hydraulic motor and the swing pinion gear |
| Swing speed | The speed at which the upper structure of the excavator can swing |
Signs of Wear and Tear
There are several signs that indicate the need to replace your swing gearbox:
- Loud and unusual noises during operation
- Increased swing time
- Reduced swing speed
- Fluid leaks from the gearbox
Maintenance
Regular maintenance is important for extending the lifespan of your swing gearbox. Here are some tips:
- Inspect the gearbox regularly for signs of wear and tear
- Change the gearbox oil at regular intervals
- Keep the gearbox clean and free of debris
- Replace worn or damaged parts as needed
Compatible Brands and Models
Our swing gearbox is compatible with various excavator brands and models, including:
- Caterpillar
- Hitachi
- Komatsu
- Volvo
Please note that we do not sell products for the above-mentioned brands and models. The compatibility list is provided for customer convenience only.
About Our Company
We are a company that specializes in producing high-quality spare parts for excavators, bulldozers, and other construction machinery. Our products include walking reducer assemblies, rotary reducer assemblies, gears, gear rings, transmission shafts, planetary gears, wheel hubs, pump housings, rotary shaft seats, end caps, gaskets, bearings, oil seals, and more. Our parts are compatible with over 508 different machine models, and we offer custom design and engineering services to meet the unique needs of our customers. Our company is committed to providing superior quality, service, and value to our customers.
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


