Product Description

Production Description for flanged type Slewing Bearing, ring bearing, rolling bearings, turntables, swing bearing

Slewing Bearing 232.20.0800.013    for construction machinery, cranes,shipyard crane

1 Type single row 4 point contact ball slewing bearing, ring bearing, slewing gear
2 Bore diameter 737.6mm
3 Outside diameter 948mm
4 Height 56mm
5 Material 42CrMo, 50Mn
6 Precision P0. P6. P5.
7 Cage/retainer Nylon or aluminum
8 Gear type internal gear teeth
9 N.W. 61.6KGS

Flanged Slewing Bearing ungeared
230.20.0400.013 (Type 21/520.0) 230.20.0400.503 (Type 21/520.0) 230.21.571.013  (Type 21/520.0) 280.30.0900.013 (Type 110/1100.0) 280.30. 0571 .013 (Type 110/1100.0)
230.20.0500.013 (Type 21/650.0) 230.20.0500.503 (Type 21/650.0) 230.21.571.013  (Type 21/650.0) 280.30.1000.013 (Type 110/1200.0) 280.30.1075.013 (Type 110/1200.0)
230.20.0600.013 (Type 21/750.0) 230.20.0600.503 (Type 21/750.0) 230.21.0675.013  (Type 21/750.0) 280.30.1100.013 (Type 110/1300.0) 280.30.1175.013 (Type 110/1300.0)
230.20.0700.013 (Type 21/850.0) 230.20.0700.503 (Type 21/850.0) 230.21.571.013  (Type 21/850.0) 280.30.1200.013 (Type 110/1400.0) 280.30.1275.013 (Type 110/1400.0)
230.20.0800.013 (Type 21/950.0) 230.20.0800.503 (Type 21/950.0) 230.21. 0571 .013  (Type 21/950.0) 280.30.1300.013 (Type 110/1500.0) 280.30.1375.013 (Type 110/1500.0)
230.20.0900.013 (Type 21/1050.0) 230.20.0900.503 (Type 21/1050.0) 230.21. 0571 .013  (Type 21/1050.0) 280.30.1400.013 (Type 110/1600.0) 280.30.1475.013 (Type 110/1600.0)
230.20.1000.013 (Type 21/1200.0) 230.20.1000.503 (Type 21/1200.0) 230.21.1075.013  (Type 21/1200.0)    
Flanged Slewing Bearing with external gear
231.20.0400.013 (Type 21/520.1) 231.20.0400.503 (Type 21/520.1) 231.21.571.013  (Type 21/520.1) 281.30.0900.013 (Type 110/1100.1) 281.30. 0571 .013 (Type 110/1100.1)
231.20.0500.013 (Type 21/650.1) 231.20.0500.503 (Type 21/650.1) 231.21.571.013  (Type 21/650.1) 281.30.1000.013 (Type 110/1200.1) 281.30.1075.013 (Type 110/1200.1)
231.20.0600.013 (Type 21/750.1) 231.20.0600.503 (Type 21/750.1) 231.21.0675.013  (Type 21/750.1) 281.30.1100.013 (Type 110/1300.1) 281.30.1175.013 (Type 110/1300.1)
231.20.0700.013 (Type 21/850.1) 231.20.0700.503 (Type 21/850.1) 231.21.571.013  (Type 21/850.1) 281.30.1200.013 (Type 110/1400.1) 281.30.1275.013 (Type 110/1400.1)
231.20.0800.013 (Type 21/950.1) 231.20.0800.503 (Type 21/950.1) 231.21. 0571 .013  (Type 21/950.1) 281.30.1300.013 (Type 110/1500.1) 281.30.1375.013 (Type 110/1500.1)
231.20.0900.013 (Type 21/1050.1) 231.20.0900.503 (Type 21/1050.1) 231.21. 0571 .013  (Type 21/1050.1) 281.30.1400.013 (Type 110/1600.1) 281.30.1475.013 (Type 110/1600.1)
231.20.1000.013 (Type 21/1200.1) 231.20.1000.503 (Type 21/1200.1) 231.21.1075.013  (Type 21/1200.1)    
Flanged Slewing Bearing with internal gear
232.20.0400.013 (Type 21/520.2) 232.20.0400.503 (Type 21/520.2) 232.21.571.013  (Type 21/520.2) 282.30.0900.013 (Type 110/1100.2) 282.30. 0571 .013 (Type 110/1100.2)
232.20.0500.013 (Type 21/650.2) 232.20.0500.503 (Type 21/650.2) 232.21.571.013  (Type 21/650.2) 282.30.1000.013 (Type 110/1200.2) 282.30.1075.013 (Type 110/1200.2)
232.20.0600.013 (Type 21/750.2) 232.20.0600.503 (Type 21/750.2) 232.21.0675.013  (Type 21/750.2) 282.30.1100.013 (Type 110/1300.2) 282.30.1175.013 (Type 110/1300.2)
232.20.0700.013 (Type 21/850.2) 232.20.0700.503 (Type 21/850.2),  232.21.571.013  (Type 21/850.2) 282.30.1200.013 (Type 110/1400.2) 282.30.1275.013 (Type 110/1400.2)
232.20.0800.013 (Type 21/950.2) 232.20.0800.503 (Type 21/950.2) 232.21. 0571 .013  (Type 21/950.2) 282.30.1300.013 (Type 110/1500.2) 282.30.1375.013 (Type 110/1500.2)
232.20.0900.013 (Type 21/1050.2) 232.20.0900.503 (Type 21/1050.2) 232.21. 0571 .013  (Type 21/1050.2) 282.30.1400.013 (Type 110/1600.2) 282.30.1475.013 (Type 110/1600.2)
232.20.1000.013 (Type 21/1200.2) 232.20.1000.503 (Type 21/1200.2) 232.21.1075.013  (Type 21/1200.2)    

Why choose CZPT slewing bearings
A pioneer in slewing bearing field, rich experience, can do design, produce, mounting guide
Small order accepted
ISO certified company
Variorum models
7*24hours hotline to help you with your cranes
Strict quality control system to ensure quality for slewing bearing

LYHY Slewing Bearing Types
LYHY slewing bearings can be divided into the following types as per  their structures:
single row 4 point contact ball slewing bearing,
single row cross roller slewing bearing,
double row different ball diameter slewing bearing,
three row cylindrical roller slewing bearing and roller/ball combination slewing bearing.
And all these types of slewing bearings can be further divided into bearings without gears, bearings with external gears and bearings with internal gears.

Detailed description of these types slewing bearings

Single row 4 point contact ball slewing bearings
     This kind of slewing bearings can support high dynamic loads, transmitting axial and radial forces simultaneously as well as the resulting tilting moments. Applications of this kind of bearings are hoisting, mechanical handling and general mechanical engineering etc.
Single row cross roller slewing bearings
     This kind of bearings can support combinations of large radial force, medium axial force and tilting moment with small or zero clearance. Main applications of this kind of bearings are hoisting and mechanical handling and general mechanical engineering etc.
Double row different ball diameter slewing bearings
     This kind of bearings can support high static loads with simple structures. They are mainly used in situations with variation load position and direction and continuously rotating. Main applications of this kind of bearings are deck hoisting, mining and material handling etc.
Triple row cylindrical roller slewing bearings
     This kind of bearings has high load carrying capacity. Under same loads, this kind of bearings has much smaller diameters which can make the installation much compact, as different kinds of loads are supported by different races and rollers. Main applications of this kind of bearings are hoisting, mechanical handling, mining and materials handling, offshore technology and general mechanical engineering etc.
Roller/ball combination slewing bearings
     This kind of bearings can support high axial load and low tilting moments. Usually they are large diameter slewing bearings. Applications of this kind of bearings are mining and materials handling etc.

About CZPT bearings
1.introduction:we are a manufacturer of slewing bearing since 1993, our factory occupies a area of 30000square meters with 4 workshop and 1 office building. 
2. Featured products: slewing bearing and slewing drive
3. Capital: Current is 1 million RMB, but we are increasing the capital to 10 million RMB
4. Workers: 40
5. Certificate: ISO9001:2008, 3.1 certificate, CCS certificate, Science and Technology Progress Award
6. Annual Exportation: 8million USD
7. Exported countries: (39)
Asia: India, Pakistan, Iran, Signore, Georgia, Malaysia, Vietnam, Thailand, Philippines, Israel, Korea, UAE, Sri Lanka, Saudi Arabia,
Europe: Turkey, Russia, Spain, Czech Republic, Italy, Poland, Slovakia, Bosnia and Herzegovina, Austria, France, Germany, Switzerland, Finland, Ukraine, UK
America: USA, Canada, Mexico, Brazil, Puerto Rico, Peru, Chile
Africa: South Africa, Egypt
Oceania: Australia

Production Process of CZPT slewing bearings

Quality Control Process of CZPT slewing bearings

LYHY Slewing Bearing Packing 
Bearing surface is covered with the anti-rust oil first; and then wrapped with the plastic film;
And then packed with kraft paper and professional belts;
At last, with wooden box totally at the outer packing to invoid the rust or the moist;
We can depend on the customers  demand to be packed;

All CZPT slewing ring bearings can be usually delivered timely, usual production time is 15-50 days based on different slew bearings diameters, sometimes slew rings will be in stock.
Slewing bearings can be offered different delivery terms, such as EXW, FOB, CIF, DDU and so on. 
Also, slewing rings can be transported by different transport ways, by express (such as DHL, TNT, UPS, FEDEX and so on), by air, by sea, by truck, by railway and so on.

Slewing Ring Bearings——Applications:
Slewing ring bearings are widely used in industry and known as “the machine joints” Here under is the specific slewing bearing applications
1. Construction machinery (e.g. cranes, excavators, loader, scraper)
2. Metallurgical machinery (e.g. for steel plant)
3. Heavy machinery equipment (e.g. mining machinery, concrete machinery)
4. Marine machinery equipment (e.g. vessel, port hoisting machine, port oil transfer equipment, onshore and offshore crane)
5. Light machinery equipment (e.g. paper machine, plastic, rubber machine, weave machine)
6. Wind power generator
8. Packing machinery


Make sure that the model is correct and slewing bearing isn’t damaged during transportation.
2.  Check the appearance and rotational state of the bearing, such as rotational precision clearance, rotating flexibility, seals position, lubrication grease etc.
3.  The installation datum plane and bracket installing plane should be clean, grease, burr, paint and other foreign body should be wiped off.


1. The screws in the installing plane should be fit with the mounting holes in the slewing bearing
2.  The slewing bearing has a soft zone marked with an “s” on the upper surface, when installing the bearing, it is important to ensure that this area is placed in a non-load or infrequent load zone.
3.  When the bearing is placed on the supporting frame work it is important to check the interface between these 2 surfaces. This check should be carried out with the insertion of feel gauges between the 2 surfaces. If a gap should exist then it is recommended to plane/resurface the effective area so as to remove the gap.
4.  Install slewing bearing with high strength screws, and choose appropriate strength bolts. All bolts are required to be tightened evenly. The sequence of this tightening process is shown in Pic. Welding of bearing is not allowed, in the event of welding any adjacent parts, heat transfer shall be avoided so as to cause the bearing to become deformed or change the hardness.
5.  After installation, the bearing should be rotated to check for smooth operation and any emission of unusual noise. If either of the aforementioned are noted, then the bearing should be adjusted to eliminate them. The teeth of the largest run-out are coated with green paint.


Q: Are LYHY BEARINGS trading company or manufacturer?
A: LYHY BEARINGS is a professional manufacturer for slewing bearings, thin section bearings, ball bearings and rolling bearings

Q: How do LYHY BEARINGS control quality of their bearing?
A: LYHY BEARINGS has established strict quality control systems, all the products and services has passed ISO9001-2008 Quality Certificate and third party such as CCS, LR,ABS,BV

Q: What is the MOQ?
A: MOQ is 1pc, pls message us for detailed information.

Q: How about the package for CZPT bearings?
A: Standard Industrial packing in general condition (Plastic tube+ professional plastic belts+ plywood case). Accept design package when OEM.

Q: How long is the production time?
A: It takes about 7-40 days, depends on the model and quantity.

Q: How about the shipping?
A: We can arrange the shipment or you may have your own forwarder.

Q: Is sample available?
A: Yes, sample order is acceptable.

Q: Can we use our own LOGO or design on bearings?
A: Yes. OEM is acceptable for LYHY BEARINGS. We can design as per your requirements and use your own LOGO and package design.
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Standard or Nonstandard: Standard
Sealing Gland: Sealed On Both Sides
Rolling-Element Number: Single-Row
Roller Type: Four Point Contact Ball
Material: 50mn or 42CrMo4
Type: External Gear
US$ 340/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

slewing bearing

Are there any Specific Design Considerations when Using Slewing Bearings in Heavy-Duty Applications?

When utilizing slewing bearings in heavy-duty applications, several specific design considerations are essential to ensure reliable performance, safety, and longevity. Here are key factors to keep in mind:

  • Bearing Selection:

Choose slewing bearings with higher load-carrying capacities that are specifically designed for heavy loads. Opt for designs that distribute loads evenly and minimize stress concentrations.

  • Load Distribution:

Heavy-duty applications often involve uneven load distribution due to various operational conditions. Bearing designs should account for these variations to prevent premature wear and failure.

  • Material Selection:

Select materials that can withstand heavy loads, shock loads, and potential impacts without deformation or fatigue. High-strength steels and advanced materials with excellent mechanical properties are often preferred.

  • Rolling Element Size and Quantity:

Increase the size and quantity of rolling elements to distribute heavy loads more effectively. Larger and more rolling elements can handle higher forces while reducing stress on individual elements.

  • Lubrication and Sealing:

Heavy-duty applications generate more heat and friction. Use appropriate lubrication methods and consider advanced sealing solutions to ensure proper lubricant retention and prevent contamination.

  • Mounting and Alignment:

Ensure accurate mounting and alignment to prevent unnecessary stress on the bearing components. Misalignment can lead to premature wear and reduced bearing life.

  • Structural Integration:

Integrate the slewing bearing into the overall machine design, considering factors like structural support, load paths, and interfaces with other components.

  • Dynamic Loading:

Heavy-duty applications often involve dynamic loading scenarios. Consider factors such as impact loads, acceleration, and deceleration when designing the bearing and its supports.

  • Heat Dissipation:

Heavy loads and continuous operation can generate heat. Design the bearing housing and cooling systems to dissipate heat effectively and prevent overheating.

  • Maintenance Access:

Design the bearing arrangement to allow for convenient maintenance and inspections. Access to lubrication points, seals, and other components should be easy to facilitate regular upkeep.

  • Load Surges and Shock Absorption:

Heavy-duty applications might experience sudden load surges or impacts. Incorporate shock-absorbing mechanisms or dampers to protect the bearing from excessive forces.

In summary, heavy-duty applications demand careful consideration of bearing selection, materials, load distribution, lubrication, and other design elements to ensure the reliable and durable performance of slewing bearings under substantial loads.

slewing bearing

How does Proper Lubrication Impact the Performance and Longevity of Slewing Bearings?

Proper lubrication plays a crucial role in enhancing the performance and extending the longevity of slewing bearings. Here’s how it impacts these aspects:

  • Reduced Friction and Wear:

Lubrication forms a protective layer between the rolling elements and raceways, reducing friction and wear. This minimizes surface contact and prevents metal-to-metal contact, leading to less wear and extended bearing life.

  • Heat Dissipation:

Lubrication helps dissipate heat generated during operation. Adequate heat management prevents overheating, which can otherwise lead to premature bearing failure and reduced efficiency.

  • Corrosion Protection:

Lubricants with anti-corrosion properties form a barrier that protects bearing surfaces from moisture and environmental contaminants. This is crucial in preventing rust and corrosion, especially in challenging operating environments.

  • Sealing Effect:

Lubrication can enhance the sealing effect of bearing seals, preventing the ingress of dust, dirt, and other particles. This maintains the integrity of the bearing’s internal components and reduces the risk of contamination-related failures.

  • Noise and Vibration Reduction:

Properly lubricated bearings generate less friction and operate more smoothly, resulting in reduced noise and vibration levels. This is particularly important in applications where noise reduction is essential.

  • Improved Efficiency:

Effective lubrication minimizes energy losses due to friction, leading to improved overall efficiency of machinery. This is significant in applications that require high performance and energy savings.

  • Prevention of Micro-Movements:

Lubrication helps prevent micro-movements between the rolling elements and raceways, reducing wear caused by repeated impacts and vibrations during operation.

  • Maintenance Reduction:

Proper lubrication reduces the need for frequent maintenance and replacement of bearings. This not only saves time and resources but also contributes to increased uptime and reduced operational disruptions.

  • Longevity:

By reducing wear, preventing corrosion, and managing heat, proper lubrication significantly extends the lifespan of slewing bearings. This, in turn, contributes to improved equipment reliability and reduced lifecycle costs.

In conclusion, proper lubrication is essential for optimizing the performance, efficiency, and durability of slewing bearings. Regular maintenance and adherence to manufacturer-recommended lubrication intervals ensure that the bearings operate smoothly and consistently over their operational life.

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 Custom Internal Gear Turntable Bearings 232.20.0800.013 Slewing Bearings   bearing and raceChina Custom Internal Gear Turntable Bearings 232.20.0800.013 Slewing Bearings   bearing and race
editor by CX 2024-05-15

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.

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