Swing Gearbox Fit for Excavator Hitachi ZX450
Swing Gearbox Fit for Excavator Hitachi ZX450

Swing gearbox, also known as swing drive, is a crucial component in an excavator that is responsible for the rotation of the upper structure. It is located in the center of the excavator and is connected to the engine through the hydraulic system. The gearbox is designed to handle high torque and provide smooth and precise rotation for the upper structure.
Installation and Working Principle

The swing gearbox is installed in the center of the excavator, between the upper structure and the lower structure. The gearbox is connected to the upper structure through the swing bearing, and to the lower structure through the slewing ring. When the hydraulic system pumps oil into the gearbox, the gears inside the gearbox rotate, which in turn rotates the upper structure of the excavator. The gearbox also contains a braking system that can lock the upper structure in place when necessary.
Compatibility
Our swing gearbox is specifically designed to fit Excavator Hitachi ZX450, and we offer a wide range of compatible models. Before purchasing, it is important to confirm the following parameters:
| Parameter | Description |
|---|---|
| Excavator brand and model | The exact brand and model of the excavator for which the gearbox is intended |
| Swing radius | The maximum distance from the center of the excavator to the edge of the working area |
| Hydraulic flow rate | The amount of hydraulic fluid required to rotate the upper structure of the excavator |
When to Replace the Swing Gearbox
There are several signs that indicate that the swing gearbox needs to be replaced, including:
- Unusual noises coming from the gearbox during rotation
- Difficulty in rotating the upper structure of the excavator
- Leaks in the hydraulic system
- Excessive wear or damage to the gearbox
Maintenance to Prolong the Lifespan
Regular maintenance is essential to ensure the longevity of the swing gearbox. Some of the maintenance practices that can be done include:
- Regularly checking the gearbox for leaks or damage
- Changing the hydraulic fluid and filters as recommended by the manufacturer
- Keeping the gearbox clean and free of debris
- Inspecting the bearings and gears for wear and tear
Compatible Brands and Models
While our swing gearbox is specifically designed to fit Excavator Hitachi ZX450, we also offer compatible models for a wide range of brands and models, including but not limited to:
- Caterpillar 320D
- Komatsu PC400-6
- Volvo EC380DL
- Hyundai R210LC-9
About Our Company
We are a leading manufacturer of high-quality spare parts for construction machinery, including walking reducer assemblies, rotary reducer assemblies, gears, transmission shafts, planetary carriers, wheel hubs, pump shells, slewing bearing seats, end covers, shims, bearings, and oil seals. Our company has advanced production equipment and excellent processing technology, as well as a highly qualified production, design, and marketing team. We have more than 12,000 types of transmission components for excavators and bulldozers, covering more than 579 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


