China factory Dh225-7/9 High Precision Slewing Bearing

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 6,000m2, offering a variety of models which can meet your various demands. We own a specialized team in R&D and manufacturing the slewing bearing for many years. We can make more than 1000 models of slewing bearings to match famous excavator and crane brands, such as CATERPILLAR, , HITACHI, KOBELCO, HYUNDAI, VOLVO, DOOSAN, LIEBHERR, DAEWOO, JCB,CASE, SUMITOMO, KATO, etc.

We have strong production facilities and complete process for making slewing bearings, such as  CNC machines , vertical lathes, gear hobbing machines, gear shaping machines, hole drilling machines, quenching equipment, vertical grinding machines, turning machines, etc. We adhere to ISO9000 quality system management standards and strictly execute the mechanical standard of the domestic and international standards of the products.
Our products are supplied for the following brands:

4. Our slewing rings can match with more than 1000 excavator models. 

5. Excavator part numbers as below:

Doosan Slewing Ring Replacement 
Excavator model number Part number Excavator model number Part number
S140LC-V  109-00165  255lc-v  145719-00043
SOLAR55-VPLUS 109-00149 300-v   109-00157
DH220LC  145719-00048A DX300LCA   145719-0571
DX225 109-00162 Dx300LCA   145719-0571A 
DX225LC   109-00162A S340  145719-00038
DX225LC  109-00162 S340LC-V 145719-00038
DX225LCA 109-00162A S340LC-V  2109-1059A                  (New Part Number)
DX225LCA 145719-00048 S400LC-3 2109-9047A
S225NLC-V 145719-00045 DOOSAN 420  145719-00039
SL220LC-V  109-00052 S420LC-V  109-00161
225NLC-V 109-00052B DX420LC  K15719
225NLC-V 145719-00045 DX420LC    109-00046
255LC-V 109-00030B DX420LC   145719-00007A
255LC-V   180-5717D3 470 109-00159
255lc-v  145719-00042 SOLAR 500LC-V   145719-00040


 6. Our machine tools

7. Packaging by wooden box

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

8. Contact information

Company: HangZhou King Slewing Bearing Technology Co.,Ltd
Address: CHINAMFG Xinzhan CHINAMFG Science and Technology Park, Xinzhan District, HangZhou, ZheJiang Province
Contact person: Ms. Amy Sun
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Standard or Nonstandard: Standard
Feature: 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
US$ 1000/Set
1 Set(Min.Order)




What maintenance practices are recommended for slewing rings to ensure optimal functionality?

Proper maintenance is essential to ensure the optimal functionality and longevity of slewing rings. Regular maintenance practices help prevent premature wear, minimize downtime, and ensure reliable performance. Here are some recommended maintenance practices for slewing rings:

  • Cleaning: Regularly clean the slewing rings to remove dirt, debris, and contaminants that can cause abrasion and affect the smooth operation of the rolling elements. Use appropriate cleaning agents and methods as recommended by the manufacturer.
  • Lubrication: Adequate lubrication is crucial for the smooth operation and reduced friction of slewing rings. Follow the manufacturer’s recommendations for the type of lubricant, the frequency of lubrication, and the quantity to be applied. Regularly inspect the lubrication system and replenish or replace the lubricant as needed.
  • Inspection: Periodically inspect the slewing rings for any signs of damage, wear, or misalignment. Check for abnormal noise, vibration, or irregularities in motion. Inspect the gear teeth, raceways, seals, and mounting interfaces. If any issues are identified, take appropriate action, such as repair or replacement, to prevent further damage.
  • Torque Checks: Regularly check the torque of the fasteners and bolts that secure the slewing rings. Ensure that they are tightened to the specified torque values. Loose fasteners can cause misalignment and compromise the performance and safety of the slewing rings.
  • Seal Inspection: Inspect the seals of the slewing rings to ensure they are intact and properly functioning. Damaged or worn seals can lead to contamination and loss of lubrication, resulting in increased friction and potential damage to the slewing rings. Replace any damaged seals promptly.
  • Alignment and Mounting: Proper alignment and mounting of slewing rings are critical for their optimal functionality. Ensure that the slewing rings are correctly aligned and securely mounted according to the manufacturer’s specifications. Misalignment or improper mounting can lead to increased stress, premature wear, and reduced performance.
  • Environmental Protection: Take measures to protect the slewing rings from harsh environmental conditions. Shield them from excessive moisture, dust, chemicals, and extreme temperatures whenever possible. Implement appropriate sealing systems and consider the use of protective covers or enclosures, especially in outdoor or exposed applications.
  • Training and Documentation: Provide appropriate training to personnel responsible for the maintenance of slewing rings. Ensure they are aware of the recommended maintenance practices and follow proper procedures. Keep comprehensive documentation of maintenance activities, including lubrication schedules, inspections, repairs, and replacements.

It is important to note that maintenance practices may vary depending on the specific application, environmental conditions, and manufacturer’s recommendations. Always refer to the manufacturer’s guidelines and consult with experts or maintenance professionals when necessary to ensure the most effective maintenance practices for your slewing rings.

How do slewing rings contribute to the adaptability and versatility of rotating systems in various settings?

Slewing rings play a crucial role in enhancing the adaptability and versatility of rotating systems across various settings. Here’s a detailed explanation of how slewing rings contribute to the adaptability and versatility of rotating systems:

  • 360-Degree Rotation: Slewing rings enable 360-degree continuous rotation, allowing rotating systems to operate in any direction. This flexibility is especially valuable in applications such as cranes, excavators, and wind turbines, where unrestricted rotation is necessary to perform tasks efficiently and access multiple work zones without repositioning the entire system.
  • Load-Bearing Capacity: Slewing rings are designed to handle significant radial, axial, and moment loads. Their robust construction and large diameter enable them to support heavy equipment and loads, making them suitable for a wide range of applications, including construction machinery, material handling systems, and offshore platforms. The high load-bearing capacity of slewing rings contributes to the adaptability of rotating systems in demanding settings.
  • Compact Design: Slewing rings have a compact and space-saving design compared to alternative mechanisms for rotational movement. This compactness allows for the integration of slewing rings into systems where space is limited, such as compact construction machinery, industrial robots, and medical equipment. The compact design of slewing rings enhances the adaptability of rotating systems in confined or restricted environments.
  • Versatile Mounting Options: Slewing rings offer versatile mounting options, allowing them to be easily integrated into different types of rotating systems. They can be mounted using various methods, including bolted connections, gear or pinion arrangements, or hydraulic or electric drives. This versatility in mounting options enables slewing rings to adapt to the specific requirements and constraints of different applications and settings.
  • Support for Multiple Components: Slewing rings provide support for various components that are essential for rotating systems. For example, they can support booms, arms, or jibs in construction machinery, or act as a base for rotating platforms or turntables in manufacturing or entertainment industries. By providing a stable and reliable foundation, slewing rings enable the integration of multiple components, enhancing the versatility and adaptability of the overall system.
  • Customization and Specialized Designs: Slewing rings can be customized and designed to meet specific application requirements. Manufacturers can tailor slewing rings to accommodate specific load capacities, dimensions, mounting arrangements, sealing systems, or environmental conditions. This customization allows for the adaptation of slewing rings to diverse settings, ensuring optimal performance and functionality.
  • Integration with Control Systems: Slewing rings can be integrated with electronic or computer-controlled components, such as sensors, actuators, and control systems. This integration enables precise control, automation, and synchronization of rotating systems. By incorporating advanced control features, slewing rings can adapt to dynamic operating conditions, optimize performance, and support advanced functionalities, such as coordinated motion, precision positioning, or remote monitoring.

In summary, slewing rings contribute to the adaptability and versatility of rotating systems by enabling 360-degree rotation, providing high load-bearing capacity, offering a compact design, supporting versatile mounting options, accommodating multiple components, allowing customization, and facilitating integration with control systems. These characteristics make slewing rings suitable for a wide range of applications and settings, enhancing the versatility and adaptability of rotating systems in industries such as construction, manufacturing, transportation, renewable energy, and many others.

Can you describe the factors to consider when selecting slewing rings for specific applications?

When selecting slewing rings for specific applications, several factors need to be considered to ensure optimal performance and reliability. Here’s a detailed description of the factors to consider:

  • Load Requirements: The load capacity of the slewing ring should match the anticipated loads in the application. Consider both the maximum static load (weight of the structure or equipment) and dynamic load (forces during operation). It is crucial to analyze the load distribution, including axial, radial, and moment loads, and select a slewing ring with sufficient load-carrying capacity to handle these loads.
  • Space Limitations: Evaluate the available space for the installation of the slewing ring. Consider the diameter, height, and width of the slewing ring to ensure it fits within the space constraints of the application. It is essential to consider both the external dimensions of the slewing ring and the required clearance for rotation.
  • Rotational Speed: Determine the required rotational speed of the slewing ring. Consider the application’s operating speed and any specific speed limitations. The slewing ring should be selected to accommodate the rotational speed requirements while maintaining smooth and efficient operation.
  • Environmental Conditions: Evaluate the operating environment of the application. Factors such as temperature, humidity, dust, water exposure, chemicals, and corrosive elements should be considered. Choose a slewing ring with appropriate sealing systems, corrosion-resistant materials, and lubrication options to withstand the specific environmental conditions.
  • Accuracy and Positioning: Some applications require precise positioning and rotational accuracy. Determine the required level of accuracy and select a slewing ring that provides the necessary precision. Factors such as gear mechanism, backlash control, and manufacturing tolerances contribute to the accuracy of the slewing ring.
  • Operating Conditions: Consider the overall operating conditions of the application, including factors such as shock and vibration levels, duty cycle, continuous or intermittent operation, and expected service life. The slewing ring should be designed to withstand the anticipated operating conditions and provide reliable performance over the desired lifespan.
  • Integration and Compatibility: Assess the integration requirements of the slewing ring with the rest of the system or equipment. Consider factors such as mounting interfaces, connection points, gear compatibility, and the need for additional components such as drive systems or bearings. Ensure that the selected slewing ring is compatible with the existing or planned system components.
  • Industry Standards and Regulations: Depending on the application, specific industry standards and regulations may apply. Consider any applicable standards, such as ISO specifications or industry-specific guidelines, to ensure compliance and safety in the selection of the slewing ring.

By carefully analyzing these factors and selecting a slewing ring that meets the specific requirements of the application, one can ensure optimal performance, longevity, and reliability of the slewing ring in its intended use.

China factory Dh225-7/9 High Precision Slewing Bearing  China factory Dh225-7/9 High Precision Slewing Bearing
editor by Dream 2024-05-15