Part Number 3789545 4512796 451-2796 Crawler Excavator 390 330D 336D 340D Swing Reduction Gearbox 4509350 4509351 2332530 3640983 2095895

Crawler excavator 390 330D 336D 340D Swing Reduction gearbox 4509350 4509351 2332530 3640983 2095895

The excavator slewing gearbox is one of the most critical core components of an excavator, primarily responsible for enabling the rotation of the upper structure. Driven by a hydraulic motor, the slewing gearbox transmits power to the slewing bearing, allowing the excavator to rotate flexibly during operation and perform various complex tasks such as digging, loading, and unloading. The performance of the slewing gearbox directly determines the operational precision, efficiency, and overall stability of the excavator. Therefore, the design and manufacturing of the slewing gearbox must meet extremely high technical requirements, including high load capacity, low noise, long service life, and excellent impact resistance.

With the continuous advancement of construction machinery technology, excavator slewing gearboxes are evolving towards lightweight, high-efficiency, and intelligent designs. Modern slewing gearboxes feature modular designs for easier installation and maintenance, while optimized gear meshing precision further reduces noise and vibration. Additionally, environmental protection and energy efficiency have become key design focuses. Many slewing gearboxes now use low-friction materials and advanced lubrication technologies to minimize energy loss and enhance overall operational efficiency.

Company Description

GZ Belparts Engineering Machinery Co., Ltd, founded in September 2013, is a foreign trade company, which is specialized in
procuring and selling excavator parts.
Our main products are excavator hydraulic pump, hydraulic parts, travel motor and gearbox, swing motor, and gearbox. 

The founder of our company has more than 9 years experience in importing and exporting and is able to help customers solve various import and export problems. We maintain good long-term relationships with all kinds of accessories factories. Thus, we can help develop and produce new products according to customer’s requirements or samples, providing technical support to customers and offering perfect services.

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• 1. Commodities will be sent to all the countries all over the world.

• 2. Please make sure that your address and contact information is correct.

• 3. Products will be carefully checked before shipment.

• 4. Generally, items will be shipped 2 working days after the payment is received.

• 5.Should any delay happen due to logistic company and local customers or duties, we will inform via message or email immediately and your understanding will be highly appreciated.

• 6.Strong carton or wooden box for gear components. Wooden box for gearbox assembly

• 7.Delivery methods: By Sea, By air to the local international airport, By express like DHL TNT FEDEX

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