Product Description

1. Company introduction 

HangZhou King Slewing Bearing Technology Co.,Ltd.is a professional manufacturer and exporter of excavator slewing rings, its factory is located in HangZhou city, ZheJiang Province,very close to ZheJiang Port, goods can be easily transported all over the world.

Our main product is excavator slewing rings, we can now produce more than 1000 part numbers to match with many famous excavator brands, such as CATERPILLAR, KOMATSU, HITACHI, KOBELCO, HYUNDAI, VOLVO, DOOSAN, LIEBHERR, DAEWOO, JCB,CASE, SUMITOMO, KATO,etc. 

Our engineers have more than 20 years rich experience in studying excavator slewing rings and we have professional measuring team can go to customers ‘ workplace  to measure the old or broken slewing rings, then to produce the same replacements. We have our own factory with latest CNC machines , such as vertical lathes, gear hobbing machines, gear shaping machines, hole drilling mahines, quenching machines, vertical grinding machines, turning machines,etc. to meet customers’ quick delivery requirements. 

We will adhere to the “quality first, credibility first” business philosophy and continually provide our clients with superior quality products and services. We warmly welcome customers from all over the world to visit us and together to build a better future !

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

3. Our excavator part numbers as below:

CAT Slewing Ring Replacement 
Excavator model number Part number Excavator model number Part number
CAT 307   102-6377 CAT 325C 227-6087 
CAT 307C   240-8361 CAT 325 199-4483
CAT 308C   240-8362 CAT 325 4178151
CAT 312CL  229-1077 CAT 325 3530676
CAT 311    231-6853 CAT 325 2316854
CAT 312B    616411 CAT 325CL  199-4475
CAT 312CL  229-1077 CAT 326 353-0649
CAT 312C 229-1077 CAT 329D      227-6087
CAT 315  148-4568 CAT 330  7Y571
CAT 318B  148-4568 CAT 330   1994559
CAT M315 M318 145-4809 CAT 330  353-0487
CAT 315C   229-1080 CAT 330B   231-6859
CAT 319C  227-6079 CAT 330B   114-1434
CAT320B  1141414 CAT 330D 227-6089 
CAT320BL   121-8222 CAT 330C  227-6089 
CAT 320  7Y1565 CAT330D/DL 227-6090
CAT 320B      114-1505 CAT 336D   353-0489
CAT 320BL   177-7723 CAT 336DL         227-6089 
CAT 320BL    114-1341 CAT 336DL   353-0680  
CAT 320C 227-6081 CAT 336D   353-0490
CAT 320C 227-6147 CAT 345   227-6052
CAT 320C 171-9425 CAT 345B     136-2969
CAT 320D 227-6082 CAT 345B      200-3645
CAT 320L 7Y1563 CAT 345BII   227-6094
CAT 320L 7Y1563  CAT 345BL    136-2970
CAT 225 8K4127 CAT 345BL    169-5536/169-5537
CAT 322C   221-6764 CAT 345DL  227-6037
CAT 324D    227-6085 CAT 345ECL   227-6052
CAT 325  7Y 0571 CAT 349D  353-0490
CAT 350   1026392 CAT374  333-3009
CAT 365C   199-4565 CAT374  367-8361
CAT 365C  227-6096 CAT 385C 199-4491
CAT 365C  227-6097 CAT 385C 227-6099
CAT 365C  199-4586 CAT 385BL  227-6098
CAT 365CL   267-6793 CAT 385CL  227-6099
CAT 365CL    397-9666 CAT 390D 227-6099
CAT374F
 
378-9586     

4. Our excavator slewing ring pictures

5. Our slewing bearing packaging pictures 

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

7. Contact information
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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
Samples:
US$ 1700/Set
1 Set(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

slewing bearing

How do Environmental Factors such as Temperature and Exposure to Corrosive Substances Impact Slewing Bearings?

Environmental factors, including temperature variations and exposure to corrosive substances, have a significant impact on the performance and longevity of slewing bearings. Here’s how these factors affect slewing bearings:

  • Temperature Extremes:

High Temperatures: Excessive heat can lead to premature bearing failure by affecting the lubrication properties, causing thermal expansion, and accelerating wear. Bearings operating at high temperatures require special lubricants and materials that can withstand thermal stresses.

Low Temperatures: Extremely low temperatures can lead to reduced lubricant viscosity, increasing friction and wear. Bearings operating in cold environments might require low-temperature lubricants and materials that maintain their properties in freezing conditions.

  • Corrosive Substances:

Moisture and Water: Exposure to moisture and water can lead to rust, corrosion, and erosion of bearing components. This is particularly relevant in marine environments or applications exposed to frequent wet conditions.

Chemical Exposure: Corrosive chemicals and aggressive substances can deteriorate bearing materials and lubricants, leading to accelerated wear and potential structural damage.

Dust and Particles: Dust, dirt, and particles can infiltrate the bearing, causing abrasive wear and increasing the risk of damage to the rolling elements and raceways.

  • Effects on Lubrication:

Temperature extremes and exposure to corrosive substances can compromise the effectiveness of lubrication. High temperatures can degrade lubricants, while corrosive environments can contaminate or dilute lubricants, reducing their protective qualities.

  • Material Selection:

When designing slewing bearings for specific environments, choosing appropriate materials is crucial. Stainless steels, specialized coatings, and corrosion-resistant materials are often preferred for applications where corrosion is a concern.

  • Sealing Solutions:

Effective sealing solutions are essential to protect slewing bearings from moisture, chemicals, and contaminants. Proper sealing helps maintain lubrication integrity and prevents external substances from entering the bearing.

  • Maintenance and Inspection:

Regular maintenance and inspections are critical in environments with temperature fluctuations and corrosive exposure. Prompt removal of contaminants, re-lubrication, and replacement of damaged parts can mitigate the effects of these factors.

  • Application-Specific Considerations:

Understanding the environmental conditions of the application is essential for selecting the appropriate slewing bearing type, materials, and maintenance practices. Customized solutions might be necessary for extreme environments.

In summary, temperature variations and exposure to corrosive substances can degrade the performance and durability of slewing bearings. Proper material selection, sealing, lubrication, and maintenance practices are vital for ensuring the bearings’ reliability in challenging environmental conditions.

slewing bearing

How does Preload Affect the Performance and Stability of Slewing Bearings?

Preload is a critical factor that can significantly impact the performance and stability of slewing bearings. It involves applying a controlled axial force to the bearing components before assembly. Here’s how preload affects slewing bearings:

  • Reduced Internal Clearance:

Applying preload reduces the internal clearance between the rolling elements and raceways. This minimizes play or clearance in the bearing, enhancing its rigidity and reducing the potential for rolling element skidding during operation.

  • Improved Stiffness:

Preloaded slewing bearings exhibit higher stiffness due to the elimination of internal clearance. This improved stiffness is crucial in applications requiring precise positioning, such as robotics and high-precision machinery.

  • Enhanced Load Distribution:

Preload improves the load distribution among rolling elements, minimizing stress concentrations and promoting uniform load sharing. This is especially important in applications with varying loads and forces.

  • Reduced Vibrations:

By eliminating internal clearance and minimizing rolling element movements, preloaded bearings experience reduced vibrations during operation. This contributes to smoother and more stable equipment performance.

  • Precise Positioning:

Preload ensures minimal movement within the bearing during rotational changes, making it suitable for applications where precise positioning and accurate motion control are essential.

  • Resistance to External Loads:

Preloaded bearings are better equipped to handle external forces and shocks without significant deformation or misalignment, maintaining consistent performance even under varying conditions.

  • Reduced Wear:

With reduced internal clearance and controlled movement, preloaded bearings experience less wear and fatigue. This extends their service life and reduces the frequency of maintenance.

  • Limitations:

However, excessive preload can lead to increased friction, heat generation, and potential damage. It’s essential to apply the right amount of preload according to manufacturer recommendations and application requirements.

In summary, preload in slewing bearings enhances rigidity, load distribution, and stability, making them suitable for applications that demand precise movement and control. Properly applied preload ensures optimal performance and extends the operational life of the bearing.

slewing bearing

What Factors Should Be Considered When Selecting a Slewing Bearing for a Specific Application?

Selecting the right slewing bearing for a specific application requires careful consideration of various factors to ensure optimal performance and longevity. Some crucial factors to take into account include:

  • Load Requirements: Determine the axial, radial, and moment loads that the slewing bearing will need to support. Choose a bearing with an appropriate load-carrying capacity for the application.
  • Space Limitations: Consider the available installation space, both in terms of diameter and height. Choose a slewing bearing that fits within the allocated space without compromising functionality.
  • Rotational Speed: Determine the required rotational speed of the bearing. Higher rotational speeds may require bearings with advanced designs and materials to manage heat and wear.
  • Environmental Conditions: Assess the operating environment for factors like temperature, humidity, dust, and corrosive substances. Select a bearing with suitable seals and coatings to withstand these conditions.
  • Accuracy and Precision: For applications requiring precise positioning, such as robotics or industrial machinery, choose a bearing that offers the necessary level of accuracy in rotation.
  • Mounting and Assembly: Consider the ease of installation and any special mounting requirements. Some bearings come with integrated mounting features, simplifying the assembly process.
  • Lubrication and Maintenance: Evaluate the lubrication needs of the bearing. Some bearings require periodic maintenance, while others are designed for long-term lubrication.
  • Expected Lifespan: Determine the desired lifespan of the bearing in relation to the application’s operational requirements. High-quality bearings with robust construction may offer longer service life.
  • Cost-Benefit Analysis: Balance the initial investment with long-term benefits. Consider factors like maintenance costs, downtime, and overall equipment performance.
  • Industry Standards: Ensure that the selected slewing bearing complies with relevant industry standards and regulations for safety and quality.

Ultimately, the selection process involves matching the unique requirements of the application with the capabilities of the slewing bearing. Consulting with bearing manufacturers and experts can provide valuable insights to make an informed decision.

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editor by CX 2024-05-15