Swing Gearbox Fit for Excavator Daewoo DH258
Swing Gearbox Fit for Excavator Daewoo DH258
The swing gearbox, also known as the swing drive, is an essential component of an excavator. It is responsible for the rotational movement of the excavator's upper structure. Here are some key features and functions of our Swing Gearbox:
- Provides smooth and precise control of the excavator
- Ensures efficient power transmission
- Durable and reliable for long-lasting performance

Installation and Functionality
The Swing Gearbox is installed in the excavator's upper structure, usually located behind the cab. Its main function is to transfer the hydraulic power generated by the engine to the undercarriage, causing the excavator to rotate. Here is how it works:

When the operator activates the swing function, the hydraulic pump generates high-pressure oil flow, which is directed to the swing gearbox. The gearbox converts the hydraulic power into mechanical power, causing the upper structure to rotate.
Compatibility and Parameters
Our Swing Gearbox is designed to fit perfectly with Excavator Daewoo DH258. Before purchasing, customers should confirm the following parameters:
| Parameter | Value |
|---|---|
| Excavator Model | Daewoo DH258 |
| Swing Ratio | 1:1.8/1:2 |
| Input Torque | 10 kN.m - 50 kN.m |
| Output Torque | 16 kN.m - 80 kN.m |
When to Replace the Swing Gearbox
There are several signs that indicate a Swing Gearbox needs to be replaced:
- Unusual noises during operation
- Inconsistent swinging or slow rotation
- Leaking hydraulic fluid
- Excessive wear and tear
Maintenance for Extended Lifespan
Proper maintenance can significantly extend the lifespan of the Swing Gearbox. Here are some maintenance tips:
- Regularly inspect for leaks and damage
- Keep the gearbox clean and free of debris
- Ensure proper lubrication
- Follow recommended inspection and maintenance schedules
Compatible Excavator Brands and Models
Our Swing Gearbox is compatible with a wide range of excavator brands and models. Here are some of the most common ones:
- Caterpillar
- Komatsu
- Volvo
- Hitachi
- Hyundai
Please note that we do not sell products under these brands. Our Swing Gearbox is compatible with these models to provide customers with convenient options for their excavator needs.
About Us
We are a leading manufacturer of high-quality engineering machinery spare parts, including walking and turning gearboxes, gears, shafts, and planetary hubs. Our company is equipped with advanced production equipment and employs a team of highly skilled professionals to ensure the highest quality products are produced. We offer a range of products that can be used in over 507 different excavator 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


