Product Description

1. Product Description
 

Material 42CrMo or 50Mn
Delivery Time 15 Days
Transport By sea, by air, by railway, by express
Warranty Period 18 Months
Package Wooden Box
Payment T/T , Western Union, Paypal

2. Product show

3. Company profile

HangZhou King Slewing Bearing Technology Co., Ltd. is a specialized manufacturer and exporter for excavator and crane slewing bearings. The company occupies the workshop area of 6, R320LC-7    81n9-57122 BG R210W-9S 81Q5-57120 R320LC-7    81N9-00571 R210W-9S 81Q5-57121 R360/380 81NA-57120 R220LC-9S 81Q6-0571 R360LC-7A 81NA-57121BG R220LC-9S 81Q6-57120 R450/500 81NB-57121 R220LC-9S 81Q6-57121 R450-7A    81NB-57122BG R220LC-9S 81Q6-00571 R520LC-9S   81QB-57120 R225-7   81qb-57121 ZX850-3  HH2036267 R250LC-7    81EN0051    

 6. Our machine tools

7. Packaging by wooden box

8. Transportation way: By sea/ air/ rail/ road/ TNT/DHL/UPS/Fedex,ect. 

9. Contact information

Company: HangZhou King Slewing Bearing Technology Co.,Ltd
Address: CZPT Xinzhan CZPT Science and Technology Park, Xinzhan District, HangZhou, ZheJiang Province
Contact person: Amy Sun
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Standard or Nonstandard: Standard
Feature: High Speed, Short Delivery Time
Sealing Gland: We Use Seal Rings
Rolling-Element Number: Single Row, Three Row for Huge Slewing Bearing
Roller Type: Four Point Contact
Material: Alloy Steel
Samples:
US$ 1000/Set
1 Set(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

slewing bearing

How do Slewing Bearings Contribute to the Smooth Rotation of Cranes and other Heavy Machinery?

Slewing bearings play a vital role in ensuring the smooth and efficient rotation of cranes and other heavy machinery that require controlled movement. Their design and functionality are specifically tailored to handle the unique challenges posed by such applications. Here’s how slewing bearings contribute to the smooth rotation of cranes and heavy machinery:

  • Load Handling:

Crane operations involve lifting and moving heavy loads. Slewing bearings are designed to carry substantial axial, radial, and moment loads simultaneously. This load-handling capacity allows cranes to lift and transport heavy objects with precision.

  • Smooth Rotation:

Slewing bearings provide a smooth interface between the upper structure (superstructure) and the lower structure (substructure) of the machinery. This allows for controlled and precise rotation of the upper structure, enabling cranes to maneuver smoothly during lifting, loading, and unloading operations.

  • Efficient Torque Transmission:

During crane rotation, torque generated by the motor is transmitted through the slewing bearing to the upper structure. The bearing’s design ensures efficient torque transmission, minimizing energy losses and facilitating smooth rotation even under heavy loads.

  • Low Friction and Wear:

Slewing bearings are engineered to minimize friction and wear. This reduces the energy required for rotation and prevents premature wear that could affect the bearing’s performance and longevity.

  • High Stiffness:

Slewing bearings exhibit high stiffness, which contributes to the stability of the machinery during rotation. This stiffness ensures minimal deflection and maintains precise alignment, essential for safe and controlled movement.

  • Uniform Load Distribution:

The raceway design of slewing bearings promotes uniform load distribution among rolling elements. This prevents stress concentrations and uneven wear, enhancing the bearing’s durability and contributing to smooth operation.

  • Slow and Controlled Movement:

Crane operations often require slow and controlled rotation, especially when positioning heavy loads. Slewing bearings facilitate this type of movement, allowing operators to make precise adjustments.

  • Customization for Specific Applications:

Slewing bearings can be customized to match the specific requirements of different crane designs and applications. This customization ensures optimal performance and longevity in various operational scenarios.

In summary, slewing bearings are essential components that enable the smooth and precise rotation of cranes and heavy machinery. Their load-carrying capacity, low friction, high stiffness, and ability to transmit torque efficiently contribute to the reliable and controlled movement required for various lifting and loading operations.

slewing bearing

Are there any Specific Safety Precautions to Take When Working with Slewing Bearings?

Working with slewing bearings involves certain safety considerations to prevent accidents and ensure the well-being of personnel. Here are some specific safety precautions to take:

  • Training and Knowledge:

Ensure that personnel working with slewing bearings are properly trained and have a clear understanding of the equipment, procedures, and safety protocols.

  • Protective Equipment:

Use appropriate personal protective equipment (PPE), including gloves, safety goggles, and hearing protection, to safeguard against potential hazards.

  • Lockout/Tagout:

Follow lockout/tagout procedures when performing maintenance or repairs. Locking out equipment prevents unexpected activation and potential hazards.

  • Machine Shutdown:

Before working on machinery containing slewing bearings, ensure that the equipment is properly shut down, power sources are disconnected, and any stored energy is released.

  • Proper Tools:

Use suitable tools and equipment for maintenance and assembly to prevent accidents and ensure accurate work.

  • Weight Handling:

If handling heavy slewing bearing components, use appropriate lifting equipment and techniques to avoid strain or injury.

  • Secure Work Area:

Ensure that the work area is clean, organized, and free from obstacles. This reduces the risk of tripping hazards and improves overall safety.

  • Work with a Partner:

Whenever possible, perform tasks involving slewing bearings with a partner. Having someone nearby can provide assistance in case of emergencies.

  • Safe Access:

Ensure safe access to the work area, including the use of stable platforms or ladders, to prevent falls or slips.

  • Warning Signs:

Use proper warning signs and labels to alert others about ongoing maintenance or potential hazards related to slewing bearings.

  • Manufacturer Guidelines:

Adhere to the manufacturer’s recommendations for maintenance, lubrication, and safety practices specific to the slewing bearings being worked on.

  • Emergency Procedures:

Have clear emergency procedures in place and communicate them to all personnel. Know the location of emergency equipment and exits.

By following these safety precautions, you can minimize risks associated with working on slewing bearings and create a safer environment for maintenance personnel.

slewing bearing

What is a Slewing Bearing and How Does It Work?

A slewing bearing, also known as a turntable bearing, is a specialized type of rolling-element bearing designed to handle axial, radial, and moment loads simultaneously. It allows rotational movement between two parts while supporting the loads applied to them. Slewing bearings are commonly used in various applications such as cranes, construction equipment, wind turbines, and industrial machinery.

At its core, a slewing bearing consists of multiple components, including an outer ring, an inner ring, rolling elements (balls or rollers), and in some designs, a gear or teeth arrangement. The outer ring is typically stationary and mounted to a fixed structure, while the inner ring is connected to the rotating part. The rolling elements provide smooth movement between the two rings, enabling rotation.

Slewing bearings work by minimizing friction and distributing loads effectively across the rolling elements. When a rotational force is applied to the inner ring, the rolling elements facilitate the smooth rotation of the inner ring relative to the outer ring. The rolling elements are positioned within raceways or grooves in the rings, ensuring proper contact and load distribution.

The addition of gears or teeth to the slewing bearing design enables the transmission of torque between the inner and outer rings. This feature is particularly useful when precise rotation control is required, as seen in applications like cranes and heavy machinery.

In summary, a slewing bearing functions as a rotational joint that can support various loads and movements. Its design, which includes rolling elements and optional gear systems, allows it to manage axial, radial, and moment loads while facilitating smooth rotation between connected parts.

China Hot selling Supply Four-Point Contact R305-9 Non-Geared Ball Slewing Bearing   with Best SalesChina Hot selling Supply Four-Point Contact R305-9 Non-Geared Ball Slewing Bearing   with Best Sales
editor by CX 2024-05-14

Slewing bearings

As one of the slewing bearings manufacturers, suppliers, and exporters of mechanical products, We offer slewing bearings and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of slewing bearings.

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