Belparts excavator ZX70 ZX80 ZX80LCK EG70R-3 Swing Gearbox 4445648 4470057 Excavator Slewing Gearbox

The excavator swing gearbox, also known as the swing drive or slewing gearbox, is a critical component in hydraulic excavators. It enables the upper structure (house) of the excavator to rotate smoothly and efficiently, providing the machine with the necessary maneuverability for digging, lifting, and material handling operations.

This guide explores the working principle, construction, functions, applications, and maintenance of the excavator swing gearbox, offering a comprehensive understanding of its role in heavy machinery.

Working Principle

The swing gearbox operates based on a hydraulic motor and planetary gear reduction system. Here’s how it works:

1. Hydraulic Power Input: A hydraulic motor (typically a gerotor or axial piston motor) receives high-pressure oil from the excavator’s hydraulic pump, generating rotational force.

2. Gear Reduction: The motor’s high-speed, low-torque rotation is transmitted to a planetary gear system, which reduces speed and increases torque for smooth slewing motion.

3. Slewing Bearing Integration: The gearbox meshes with an internal or external slewing ring bearing, allowing the upper structure to rotate 360° relative to the undercarriage.

4. Braking Mechanism: A hydraulic or mechanical brake ensures stability when the excavator stops rotating, preventing unintended movement.

Company Description

• Loed in Guangzhou China, GZ Belparts Engineering Machinery Co., Ltd was founded in September 2013. Now, we have one shop, one warehouse, and one office as well as a professional team for purchasing, selling, packing, shipping, and after-sale service.
• > Self - improvement
• We will always remain active and positive to be self-improvement with great effort.
• > Integrity
• Belparts holds a belief: have faith in ourselves, have confidence in others. We are faithful and honest to everyone, and to all of our partners.
• > Innovation
• Belparts is committed to bringing in new methods to create innovation in its production.
• > Share
• Belparts is a team, we share difficulties and achievements.

Why Choose Us

• Strong part number database.
• If you can provide the right model and part number, we can supply the right product.
• Professional and experienced salesperson.
• Our founder has been in this field for more than 6 years, with rich experiences.
• Strict and complete company rules.
• We will try our best to meet customer’s delivery time. Before delivery, we must verify the part number or pictures of products one by one, to make sure that customers can receive high-quality and right-quantity goods.
• Good management system.
• No matter how big or small the order, as long as customers place the order, we will provide exporting services free of charge.
• Good service attitude.
• As long as customers’ requirements are reasonable, we will endeavor to make them satisfied.

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Delivery&Logistics

• Packaging Details:
• 1.According to orders, pack the spare parts one by one by oil paper;
• 2.Put them into small carton boxes one by one;
• 3.Put the packed small carton boxes into bigger carton boxes one by one;
• 4.Put the bigger carton boxes into wooden boxes if necessary especially for the shipments by sea.
• 5. Goods is packed with oil paper and plastic bags inside
• 6.Using wooden case package.
• 7.We support the custom-made demand for package

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FAQ

• Q: When will you ship my order?
• A: Once we get confirmation of payment, we will try our best to ship orders within 24 hours.
• Q: Which shipping term you can supply?
• A: By sea, air, or by express ( DHL, FedEx, TNT, UPS, EMS)
• Q: How long does it take to my address?
• A: The Normal delivery time is 1-7 days, depending on which country you are in.