Swing Gearbox Fit for Excavator Caterpillar E345D
Swing Gearbox Fit for Excavator Caterpillar E345D

A swing gearbox, also known as a swing drive, is an essential component of an excavator that controls the excavator's rotation. Here are some of its functions and uses:
- Provides rotational power to the excavator's cab and upper structure.
- Transfers hydraulic power to rotate the excavator's undercarriage.
- Allows the operator to turn the excavator's arm and bucket in any direction.
- Enables the excavator to dig and place material in different locations without moving the entire machine.
Our Swing Gearbox fits perfectly with Excavator Caterpillar E345D. It is vital to consider the following parameters before making a purchase:
| Parameter | Description |
| Brand | The brand of the excavator. |
| Model | The model of the excavator. |
| Swing Ratio | The ratio of the swing gearbox. |
| Rotation Size | The size of the rotation. |
| Motor Size | The size of the motor. |

The Swing Gearbox is installed in the excavator's upper structure and is connected to the undercarriage by a swing bearing. Its working principle is simple: the hydraulic motor drives the sun gear, which in turn drives the planetary gears, causing the ring gear to rotate.
It is essential to note when the excavator shows the following signs, the Swing Gearbox needs to be replaced:
- Strange noises during rotation
- Inconsistent or jerky rotation
- Leaking hydraulic fluid
- Excessive vibration
Regular maintenance of the Swing Gearbox can significantly extend its lifespan. Here are some tips:
- Regularly check the hydraulic fluid level and ensure it is clean and full.
- Check for leaks and fix them immediately.
- Regularly clean the gearbox and lubricate it as needed.
- Ensure that the Swing Gearbox is correctly aligned and mounted to prevent excessive wear and tear.
Here are some of the excavator brands and models that our Swing Gearbox can fit:
- Caterpillar E345D
- Komatsu PC300-7
- Hitachi EX200-2
- Volvo EC220DL
Finally, our company is a leading producer of high-quality construction machinery spare parts. We use state-of-the-art equipment and advanced production techniques to manufacture a wide range of products, including walking reducers, swing reducers, gears, shafts, planetary carriers, wheel hubs, pump shells, slewing bearings, end caps, washers, bearings, and oil seals. Our products are suitable for over 554 excavator models, with over 12,000 types of spare parts manufactured to date.
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


