Swing Gearbox Fit for Excavator Sumitomo SH350-3B
Swing Gearbox Fit for Excavator Sumitomo SH350-3B
The Swing Gearbox is a crucial component of an excavator's hydraulic system, responsible for smooth and efficient rotation of the upper structure of the machine. Here are some key features and uses of the Swing Gearbox:
- Facilitates turning of the upper structure of the excavator.
- Provides smooth and efficient power transmission to the swing system.
- Helps to distribute the weight of the upper structure evenly.
- Enables controlled and precise movements of the excavator.
- Reduces wear and tear on other components of the hydraulic system.
Here is an image of the Swing Gearbox:

Swing Gearbox Installation and Functionality
The Swing Gearbox is mounted directly to the undercarriage of the excavator and connected to the hydraulic system. As the hydraulic oil passes through the gearbox, it drives the gears and rotates the upper structure of the machine. Here is an image of the Swing Gearbox installed in an excavator:

The functionality of the Swing Gearbox can be summarized as follows:
- Receives hydraulic power from the excavator's hydraulic system.
- Transfers the power to the swing system to rotate the upper structure of the excavator.
- Helps to maintain balance and stability of the machine.
- Ensures smooth and precise movements of the excavator.
Compatibility and Specifications
Our Swing Gearbox is specifically designed to be fully compatible with the Excavator Sumitomo SH350-3B. Before purchasing, it is important to confirm the following specifications:
| Parameter | Description |
|---|---|
| Model | Sumitomo SH350-3B |
| Swing Reducer Ratio | 1 : 64 |
| Swing Torque | 4.5 kN.m |
| Weight | 220 kg |
Signs of Wear and Tear
Over time, the Swing Gearbox may begin to show signs of wear and tear that indicate it needs to be replaced. Some of the most common signs include:
- Unusual noises, such as whining or grinding
- Difficulty turning the upper structure of the excavator
- Leaks of hydraulic oil from the gearbox
- Excessive vibration while operating the excavator
- Increased fuel consumption due to decreased efficiency
Maintenance Tips
Proper maintenance of the Swing Gearbox can help to extend its lifespan and improve the overall performance of the excavator. Here are some tips to keep in mind:
- Inspect the gearbox regularly for signs of wear and tear, and replace any damaged components promptly.
- Ensure that the hydraulic system is properly maintained and free of contaminants.
- Check the oil level and quality regularly, and change the oil when necessary.
- Follow the manufacturer's guidelines for lubrication and maintenance.
Compatible Brands and Models
Our Swing Gearbox is compatible with a wide range of excavator brands and models, including but not limited to:
- Caterpillar
- Komatsu
- Hitachi
- Volvo
- Hyundai
- Doosan
Please note that while we do not sell products for the above brands and models, we are able to manufacture Swing Gearboxes that are fully compatible with them.
About Our Company
We are a highly specialized manufacturer of high-quality spare parts for construction machinery such as excavators and bulldozers. Our company is equipped with state-of-the-art production facilities and staffed by a team of highly skilled designers and marketers. Our main products include walking reducers, swing reducers, gears, gear rings, transmission shafts, planetary carriers, wheel hubs, pump housings, swing shaft seats, end covers, washers, bearings, oil seals, and other supporting products. We offer more than 12,000 transmission parts for over 689 different models of construction machinery.
Thank you for considering our Swing Gearbox. For more information, please contact us.
Author: Miya
Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
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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


