Swing Gearbox Fit for Excavator Daewoo DH370-9
Swing Gearbox Fit for Excavator Daewoo DH370-9
The swing gearbox is a crucial component of an excavator that allows the boom to swing left and right. Here are the main functions of this gearbox:
- Controls the movement and direction of the excavator boom
- Transfers power from the motor to the swing bearing
- Controls the speed and torque of the swing motion

Location and Operation
The swing gearbox is located at the base of the excavator, where it connects to the swing bearing. It is responsible for transferring power from the engine to the swing bearing, which allows the boom to rotate left and right. The gearbox operates by using a combination of gears and hydraulic fluid to control the speed and direction of the swing motion.

Compatibility with Excavator Daewoo DH370-9
Our swing gearbox is designed to fit perfectly with the Excavator Daewoo DH370-9. Before purchasing, it is important to determine the following parameters:
| Parameter | Description |
|---|---|
| Machine Model | Excavator Daewoo DH370-9 |
| Swing Ratio | 4.5:1 |
| Hydraulic Motor Type | Fixed Displacement |
| Output Torque | 10,000 Nm |
When to Replace the Swing Gearbox
If you notice any of the following signs, it may be time to replace your swing gearbox:
- Unusual noises coming from the gearbox
- Leaking hydraulic fluid
- Difficulty turning the excavator boom
- Excessive wear on the swing bearing
Maintenance to Extend Lifespan
Here are some routine maintenance tasks that can help extend the lifespan of your swing gearbox:
- Regularly check and replace hydraulic fluid
- Clean the gearbox and swing bearing regularly
- Check and tighten any loose screws or bolts
- Replace worn or damaged gears or bearings promptly
Compatible Brands and Models
Our swing gearbox can also be adapted to fit a variety of other excavator brands and models, including:
- Caterpillar CAT320C
- Komatsu PC200-8
- Hitachi EX200-2
- Volvo EC210B
However, please note that we do not sell products for these specific brands and models. The compatibility information is provided for your convenience in selecting the appropriate parts for your excavator.
About Us
We are a company focused on producing high-quality spare parts for construction machinery such as excavators and bulldozers. Our products include walking and rotary speed reducers, gears, shafts, planetary frames, wheel hubs, pump housings, rotary shaft seats, and end covers, as well as washers, bearings, and oil seals. Our transmission components for excavators and bulldozers now exceed 12,000 types, suitable for 511 different models. We have a team of highly skilled engineers, designers, and marketers who are dedicated to providing top-quality products and services 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


