Swing Gearbox Fit for Excavator Hitachi EX75
Swing Gearbox Fit for Excavator Hitachi EX75
The Swing Gearbox is an essential part of an excavator that enables it to perform a 360-degree swing. It is responsible for transferring power from the engine to the excavator's upper structure, allowing it to rotate horizontally. The gearbox is made up of several gears that work together to provide smooth and accurate movement. Here are some of the key features and benefits of our Swing Gearbox:
- Enhances the excavator's maneuverability and productivity
- Provides smooth and accurate movement
- Built to withstand heavy loads and extreme conditions
- Ensures efficient power transmission from the engine to the upper structure

Installation and Working Principle
The Swing Gearbox is located at the base of the upper structure and is an integral part of the excavator's hydraulic system. It works by receiving power from the engine and transferring it to the hydraulic motor, which drives the upper structure's rotation. The gearbox's primary function is to ensure that the entire system operates smoothly and accurately. Here's an illustration of the Swing Gearbox installed in an excavator:

Compatibility and Parameters
Our Swing Gearbox is compatible with the Excavator Hitachi EX75 model, and it is essential to consider the following parameters before making a purchase:
| Parameter | Description |
|---|---|
| Swing speed | The gearbox should be compatible with the excavator's swing speed |
| Hydraulic flow rate | The gearbox should be compatible with the hydraulic flow rate of the excavator |
| Weight capacity | The gearbox should be able to withstand the weight capacity of the excavator |
| Excavator model | The gearbox should be compatible with the excavator's model |
Signs for Replacement and Maintenance
When the Swing Gearbox shows any of the following signs, it is time to replace it:
- Unusual sounds or vibrations during operation
- Reduced swinging speed or movement
- Leakage of hydraulic fluid
- Difficulty in rotating the upper structure
Proper maintenance can significantly increase the Swing Gearbox's lifespan and ensure optimal performance. Here are some maintenance tips:
- Regularly check for signs of wear and tear, such as cracks or broken teeth
- Lubricate the gearbox regularly to prevent friction and overheating
- Replace hydraulic fluid regularly to prevent contamination and damage to the gearbox
Compatible Excavator Brands and Models
Our Swing Gearbox is compatible with various excavator brands and models, including but not limited to:
- Komatsu PC200-7
- Caterpillar 320B
- Volvo EC210B
- Hitachi EX400-3
Please note that we do not sell products for the above brands and models, and they are only listed for customers' convenience when selecting compatible parts. We are a specialized manufacturer of high-quality transmission parts for excavators and bulldozers. Our products include walking reducers, swing reducers, gears, shafts, planetary carriers, and more. Our company is dedicated to producing the highest quality products using the latest technology and equipment. With over 12,000 transmission parts for over 560 models, we are your one-stop-shop for all your excavator and bulldozer transmission needs.
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


