Excavator Swing Bearing Manufacturer

Excavator Parts

Xuzhou National Construction Machinery

Welcome to Xuzhou National Construction Machinery Co., Ltd.! We offer over 1,000 types of excavator swing bearings and are committed to being a leading manufacturer and supplier of top-quality engineering machinery components. Our primary products include swing bearings, hydraulic pumps, final drives, swing reduction gearboxes, excavator final drive planetary carriers, hydraulic motors, slewing reducers, travel reducers, gearbox parts, slewing gears, and excavator rotary shafts.

Based in Xuzhou City, China, our company is located in the heart of the engineering machinery industry. Our mission is to provide superior products and exceptional service to our clients, ensuring their utmost satisfaction. We consistently strive for excellence, providing high-performance and durable products to our clients.

Get in touch with us now for the latest quote.
Excavator swing bearing types
Common types include:
1. Single-row four-point contact ball bearings: These are simple in design and suitable for light axial and radial loads, typically used in small and medium excavators.
2. Double-row different diameter ball bearings: These can handle larger loads and offer higher stability, ideal for medium and large excavators.
3. Crossed roller bearings: Featuring crisscrossed rollers, they can withstand significant loads and torque, perfect for high precision and rigidity applications.

4. Three-row roller bearings: These distribute loads across three rows, providing the highest load capacity, mainly used in super-large excavators.
CNC gear shaper
Excavator Spare Parts ,slewing bearing replacement
Excavator slewing bearing replacement involves several key steps to ensure proper function and longevity. First, safely position the excavator and detach the superstructure. Remove any hydraulic connections and electrical wiring. Unbolt the old slewing bearing carefully to avoid damaging adjacent components. Clean the mounting surfaces thoroughly to remove debris and old grease. Position the new slewing bearing accurately, ensuring alignment with bolt holes. Secure it with new bolts, torquing them to the manufacturer’s specifications. Reconnect all hydraulic and electrical systems, then test the slewing function to ensure smooth operation. Regular maintenance and proper lubrication are crucial to prolong the bearing's life.
CNC vertical lathe
Excavator Slewing Ring,Turntable Bearing Wear Signs
Signs of wear in excavator slewing ring bearings include several key indicators. Look for unusual noises like grinding or clicking during operation, which suggest internal damage. Increased play or looseness in the bearing can be felt as excessive movement in the excavator's upper structure. Visible leakage of grease or oil around the bearing indicates possible seal failure. Irregular or jerky slewing motion can point to uneven wear or internal issues. Additionally, check for metal shavings or debris in the lubricant, a clear sign of internal wear and tear. Regular inspections and timely maintenance can prevent severe damage and costly repairs.

Production Equipments

It integrates forging, annealing, turning, salt bath quenching, grinding, assembly, and precision rolling element production, and specializes in the design and production of various series of high-speed, low-noise, long-life swing bearings.

Testing Equipments

Precision testing equipment can conduct precise detection and analysis of size, roughness, shape, contour, and spatial position of bearings and accessories.Bearing life and performance testing equipment can simulate actual working conditions for bearing life, noise (howling), dustproof, waterproof (mud), grease leakage, temperature rise, high (low) temperature resistance, etc. The laboratory is equipped with multiple test engineers who can design test plans according to customer requirements.

Swing Bearing Display Area

Our Replacement Slewing Bearings

At our company, we understand the critical role that swing bearings (also known as swing circles, ring gears, ring bearings, slewing ring bearings, slewing rings, and turntable bearings) play in the smooth and efficient operation of your equipment. That’s why we offer an extensive inventory of swing bearings suitable for a variety of manufacturers and machines.

Our replacement slewing bearings are meticulously designed and manufactured to meet or exceed the highest industry standards. These bearings are known for their robustness, precision, and durability, ensuring that your equipment remains operational and efficient even under the most demanding conditions. One of the significant advantages of choosing our replacement slew bearings is the substantial savings they offer over expensive OEM parts. 

Knowledgeable Excavator Parts Specialists Search for You

We take pride in not only the quality of our products but also the expertise of our team. Our parts specialists possess extensive knowledge and a long history in the industry, ensuring that you receive the best possible advice and support. Whether you are unsure about the specific part you need or have questions about compatibility, our experts are here to provide you with peace of mind. Their in-depth understanding of various manufacturers and machine models means you can order with confidence, knowing you are getting the right part for your needs.

Contact our parts specialists today and experience the benefits of working with a trusted partner in the industry. Your machinery’s performance and longevity are our top priorities, and we are committed to helping you achieve both.

Excavator Swing Bearing

swing bearings

A Detailed Guide to Replacing Slewing Bearing Sealing Devices

Introduction The excavator slewing bearing sealing ring is a critical component that plays a significant role in the overall operation and maintenance of the machine. Ensuring its proper function is essential for preventing hydraulic oil leakage, protecting the support system, ensuring safe operation, and reducing maintenance costs. This comprehensive guide will walk you through the […]

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Slewing Bearing

Slewing Bearing Rocking Test: Ensuring Stability and Durability

Slewing bearings are vital components in various types of engineering machinery, construction equipment, and heavy-duty machinery. These bearings support rotating parts and are subjected to significant stress and motion during operation. To ensure their performance and reliability, the slewing bearing rocking test is a crucial method. This test simulates the conditions slewing bearings face in […]

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Hole Inspection

Ensuring Longevity of Swing Circles in Excavators: Design, Transport, Installation, and Maintenance

Introduction Swing circles, also known as slewing bearings, play a crucial role in the operation of various machines, particularly excavators. They allow the cab to rotate relative to the lower machine frame, facilitating smooth and efficient work operations. However, these components are subject to intense stress, including high-frequency cyclic loading, tilting moments, and considerable inertial, […]

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hydraulic pump

What is the lifespan of a Komatsu PC1250-8 Main Pump 708-2L-00680?

Introduction In the world of heavy machinery, excavators play a pivotal role in construction and mining operations. These robust machines rely on complex hydraulic systems to power their movements, with the main pump serving as a critical component. Understanding the lifespan and maintenance of components like the Komatsu PC1250-8 Main Pump 708-2L-00680 is essential for […]

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Hydraulic Pump in a PC1250

Symptoms of a Failing Hydraulic Pump in a PC1250 Excavator

Introduction Hydraulic pumps are crucial components in excavators like the PC1250, responsible for powering various hydraulic functions essential to its operation. Identifying signs of hydraulic pump failure early can prevent costly repairs and downtime. This blog will explore the symptoms, causes, and actions to take when facing hydraulic pump issues with the PC1250 excavator. The […]

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21Y-60-12101 for KOMATSU PC200LC-7

Failure Items in a Final Drive Motor

Introduction The final drive motor in heavy machinery, particularly in excavators, is crucial for its operation. It is responsible for converting hydraulic power into mechanical motion, enabling the tracks or wheels to move. However, like any mechanical component, final drives are susceptible to failure due to various factors. This blog will delve into the most […]

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