We are proud to be a globally recognized leader in the manufacturing and supply of premium engineering machinery components, exporting our products to numerous countries around the world. With an extensive range of over 1,000 types of excavator swing bearings, we cater to a diverse array of industry needs, ensuring top-notch quality and reliability.
Strategically located in Xuzhou City, the heart of China's engineering machinery industry, we are in a prime position to leverage the latest technological advancements and industry trends. Our mission is to deliver superior products and exceptional service, ensuring the utmost satisfaction of our clients. We are committed to excellence, constantly innovating to provide high-performance and durable products that stand the test of time.
Over the years, we have built a solid reputation for quality and reliability, earning widespread acclaim and positive feedback from our global clientele. Our dedicated team works tirelessly to meet and exceed customer expectations, ensuring every product we deliver is of the highest standard.
Join our family of satisfied customers and experience the difference that Xuzhou National Construction Machinery Co., Ltd. can make for your business. Contact us today for the latest quotes and let us help you achieve your goals with our top-quality machinery components!
Yes, of course, Each model has a parameter list on the website. You can choose the suitable slewing bearing according to these parameter lists. If you don't know how to choose, you can get in touch with us and our engineers will work with you to choose the suitable product. We can also design a new slewing bearing solution for you according to your equipment.
The hydraulic pump is the driving force that powers the hydraulic system of an excavator. Its primary function is to generate the high-pressure hydraulic fluid required to operate the various hydraulic components and actuators in the excavator.In summary, the hydraulic pump is the heart of the excavator's hydraulic system, converting mechanical power from the engine into the high-pressure hydraulic power needed to operate the machine and perform various tasks like digging, lifting, and moving materials
The swing reducer, also known as a slewing reducer or swing gearbox, is responsible for rotating the upper structure of the excavator relative to the undercarriage. It allows the cab and attachment to swing left and right.The travel reducer is part of the excavator's walking mechanism, which enables tracked excavators to move from one location to another. It works in conjunction with a travel motor.
Installing an excavator swing bearing requires careful preparation and attention to detail. First, ensure the excavator is safely positioned on a stable surface, and disconnect any hydraulic, electrical, and mechanical connections to the upper structure. This step is crucial to avoid any accidents or damage during the installation process.
Next, carefully unbolt and remove the old swing bearing, making sure not to damage adjacent components. Once the old bearing is removed, thoroughly clean the mounting surfaces to remove any debris, rust, or old grease. A clean surface is essential for proper alignment and secure installation of the new bearing.
Position the new swing bearing onto the cleaned mounting surface, aligning it precisely with the bolt holes. Insert and hand-tighten the bolts in a star pattern to ensure even distribution. After the initial tightening, torque the bolts to the manufacturer’s specifications to ensure they are securely fastened.
Reconnect all hydraulic, electrical, and mechanical systems, ensuring everything is properly reattached. Finally, operate the excavator to test the new swing bearing, ensuring smooth and noise-free rotation. Regular maintenance and proper lubrication are crucial to prolong the bearing’s life and maintain optimal performance.
1. Outer Diameter (OD): This is the total diameter of the bearing, measured from the outermost edges.
2. Inner Diameter (ID): This is the diameter of the inner ring of the bearing.
3. Height (H): This is the thickness of the bearing, including both the inner and outer rings.
4. Bolt Holes: The number, size, and spacing of the bolt holes used to secure the bearing to the excavator.
5. Raceway Diameter: The diameter of the raceway, which is the path along which the rolling elements travel.
6. Rolling Element Size: The size of the balls or rollers within the bearing.
7. Load Capacity: The maximum axial, radial, and moment load the bearing can support.
For instance, a typical slewing bearing for a medium-sized excavator might have an outer diameter ranging from 1,000 mm to 2,500 mm, an inner diameter ranging from 800 mm to 2,200 mm, and a height of about 100 mm to 200 mm. Bolt holes and their configurations will differ based on the specific design and application requirements.
For exact dimensions, it is recommended to refer to the manufacturer’s specifications or technical drawings for the specific model of the excavator slewing bearing.
1. Identify the Source: First, ensure the noise is indeed coming from the slewing ring bearing. Use a stethoscope or similar tool to pinpoint the exact origin of the noise.
2. Check Lubrication: Insufficient or improper lubrication is a common cause of bearing noise. Ensure the bearing is adequately lubricated with the manufacturer-recommended grease or oil. Remove old grease if contaminated and apply fresh lubricant.
3. Inspect for Contamination: Dirt, debris, or other contaminants can enter the bearing and cause noise. Inspect the bearing for any signs of contamination and clean it thoroughly if necessary.
4. Examine for Wear and Damage: Look for signs of wear, pitting, or damage on the raceways and rolling elements. Excessive wear or damage may require the bearing to be repaired or replaced.
5. Check Alignment and Installation: Misalignment or improper installation can lead to noise. Ensure the bearing is correctly aligned and securely mounted according to the manufacturer’s guidelines.
6. Verify Load Conditions: Overloading or uneven load distribution can cause noise. Verify that the bearing is operating within its specified load capacity and adjust the load conditions if needed.
7. Monitor Operating Conditions: Factors such as temperature, speed, and vibration can affect bearing performance. Ensure the operating conditions are within the recommended parameters to prevent noise.
If these steps do not resolve the issue, it may be necessary to consult with the bearing manufacturer or a professional technician for further diagnosis and potential replacement.
Increasing excavator efficiency involves several key practices. First, ensure regular maintenance of all components, including hydraulic systems, tracks, and engines, to avoid unexpected breakdowns. Optimize the use of attachments by choosing the right tool for the job, such as selecting the correct bucket size for the material being handled.
Train operators to use the machine effectively, focusing on smooth operation and minimizing idle time. Implementing a telematics system can also help monitor machine performance and identify areas for improvement. Additionally, keeping the undercarriage clean and well-maintained can prevent excessive wear and tear. By paying attention to these details, you can significantly enhance the productivity and lifespan of your excavator.
An excavator hydraulic system operates by using pressurized hydraulic fluid to power various components of the machine. The system consists of a hydraulic pump, which is driven by the engine, to generate high-pressure fluid. This fluid is then directed through hydraulic lines to various actuators, such as cylinders and motors, controlling the boom, arm, bucket, and swing functions. Valves regulate the flow and pressure of the hydraulic fluid, allowing precise control of the excavator's movements. The hydraulic fluid returns to the reservoir to be re-pressurized and recirculated, ensuring a continuous and efficient operation.
Replacing an excavator swing bearing is a meticulous process that requires careful attention to safety and detail. Begin by ensuring the excavator is turned off, properly secured, and that all hydraulic pressure is released. Gather the necessary tools, including wrenches, lifting equipment, and the replacement swing bearing. Use a crane or lifting device to support the upper structure of the excavator, preventing it from tipping over. Carefully disconnect any hydraulic lines and electrical connections that might obstruct the removal process.
Remove the bolts and fasteners securing the swing bearing to both the upper and lower structures. Gently lift the upper structure just enough to remove the old swing bearing. Clean the mounting surfaces thoroughly to ensure a perfect fit for the new bearing. Position the new swing bearing and lower the upper structure onto it, aligning the bolt holes accurately. Secure the new bearing by reinstalling and tightening the bolts and fasteners. Reconnect any previously disconnected hydraulic lines and electrical connections.
Finally, start the machine and test the swing function to ensure the new bearing operates smoothly and efficiently. Always refer to the manufacturer’s manual for specific instructions and safety guidelines.