Product Description

Production Description for double row ball Slewing Bearing, ring bearing, rolling bearings, turntables, swing bearing

Slewing bearing 091.35.2012.990.11.1502/091.40.2003.990.11.1502for construction machinery, cranes,shipyard crane

1 Type double row ball slewing bearing, ring bearing, slewing gear
2 Bore diameter 1852/1820mm
3 Outside diameter 2237.2/2251.2mm
4 Height 133/148mm
5 Material 42CrMo, 50Mn
6 Precision P0. P6. P5.
7 Cage/retainer Nylon or aluminum
8 Gear type external gear teeth
9 N.W. 954/1220KGS

Double Row Ball Slewing Bearing–Bearing with external gear
011.20.571.000.11.1504 011.20.571.001.21.1504 011.20.571.000.11.1504
011.20.571.001.21.1504 011.20.1220.000.11.1504 011.20.1220.001.21.1504
011.20.1385.000.11.1504 011.20.1385.001.21.1504 011.25.1200.600.11.1503
011.25.1200.601.21.1503 011.25.1464.000.11.1503 011.25.1461.001.21.1503
011.25.1800.000.00.1503 011.25.1800.001.41.1503 011.30.1440.190.11.1503
011.30.1440.191.41.1503 011.30.1734.000.11.1503 011.30.1734.001.41.1503
011.30.2031.600.11.1503 011.30.2031.601.41.1503 011.30.2235.000.11.1503
011.30.2235.001.41.1503 011.35.1750.700.11.1503 011.35.1750.701.41.1503
011.35.2220.000.11.1503 011.35.2220.001.41.1503 011.35.2620.000.11.1503
011.35.2620.001.41.1503 011.40.2240.000.11.1502 011.40.2240.001.41.1502
011.40.2619.000.11.1502 011.40.2619.001.41.1502 011.40.2795.000.11.1502
011.40.2795.001.41.1502 011.40.2915.000.11.1502 011.40.2915.001.41.1502
011.40.3150.000.11.1502 011.40.3150.001.41.1502 011.50.2987.001.49.1502
011.50.3167.001.49.1502 011.50.3347.001.49.1502 011.50.3567.001.49.1502
011.50.3747.001.49.1502 011.50.4140.001.49.1502  
091.20.1006.990.11.1503 091.20.1006.991.21.1503 091.20.1146.990.11.1503
091.20.1146.991.21.1503 091.20.1246.990.11.1503 091.20.1246.991.21.1503
091.20.1154.990.11.1503 091.20.1154.991.21.1503 091.20.1310.990.11.1503
091.20.1310.991.21.1503 091.20.1502.990.11.1503 091.20.1502.991.21.1503
091.30.1415.990.11.1502 091.30.1415.991.21.1502 091.30.1607.990.11.1502
091.30.1607.991.21.1502 091.30.1799.990.11.1502 091.30.1799.991.21.1502
091.35.1704.990.11.1502 091.35.1704.991.41.1502 091.35.1802.990.11.1502
091.35.1802.991.41.1502 091.35.1900.990.11.1502 091.35.1900.991.41.1502
091.35.2012.990.11.1502 091.35.2012.991.41.1502  
091.40.2033.990.11.1502 091.40.2003.991.41.1502 091.40.2199.990.11.1502
091.40.2199.991.41.1502 091.40.2395.990.11.1502 091.40.2395.991.41.1502
091.50.2266.990.41.1502 091.50.2446.990.41.1502 091.50.2644.990.41.1502
Double Row Ball Slewing Bearing–Bearing with internal gear
012.18.0748.000.11.1504 012.18.0748.002.21.1504 012.20.571.000.11.1504
012.20.571.001.21.1504 012.20.1085.000.11.1504 012.20.1085.001.21.1504
012.20.1360.000.11.1504 012.20.1360.001.21.1504 012.25.1360.600.11.1503
012.25.1360.601.21.1503 012.25.1600.000.11.1503 012.25.1600.001.21.1503
012.30.1381.000.11.1503 012.30.1381.001.41.1503 012.30.1630.000.11.1503
012.30.1630.001.41.1503 012.30.1800.000.11.1503 012.30.1800.001.41.1503
012.30.1995.000.11.1503 012.30.1995.001.41.1503 012.30.2330.000.11.1503
012.30.2330.001.41.1503 012.30.2538.000.11.1503 012.30.2538.001.41.1503
012.35.1960.400.11.1503 012.35.1960.401.41.1503 012.35.2500.000.11.1503
012.35.2500.001.41.1503 012.35.2690.000.11.1503 012.35.2690.001.41.1503
012.40.2199.300.11.1502 012.40.2199.301.41.1502 012.40.2622.400.11.1502
012.40.2622.401.41.1502 012.40.2950.000.11.1502 012.40.2950.001.41.1502
012.40.3300.000.11.1502 012.40.3300.001.41.1502 012.45.2940.000.19.1502
012.45.2940.001.48.1502 012.45.3400.100.19.1502 012.45.3400.101.49.1502
012.50.2559.201.49.1502 012.50.3520.001.49.1502 012.50.3739.001.48.1502
092.20.1006.990.11.1503 092.20.1006.991.21.1503 092.20.1146.990.11.1503
092.20.1146.991.21.1503 092.20.1246.990.11.1503 092.20.1246.991.21.1503
092.20.1154.990.11.1503 092.20.1154.991.21.1503 092.20.1310.990.11.1503
092.20.1310.991.21.1503 092.20.1502.990.11.1503 092.20.1502.991.21.1503
092.30.1415.990.11.1502 092.30.1415.991.21.1502 092.30.1607.990.11.1502
092.30.1607.991.21.1502 092.30.1799.990.11.1502 092.30.1799.991.21.1502
092.35.1704.990.11.1502 092.35.1704.991.41.1502 092.35.1802.990.11.1502
092.35.1802.991.41.1502 092.35.1900.990.11.1502 092.35.1900.991.41.1502
092.35.2012.990.11.1502 092.35.2012.991.41.1502  
092.40.2033.990.11.1502 092.40.2003.991.41.1502 092.40.2199.990.11.1502
092.40.2199.991.41.1502 092.40.2395.990.11.1502 092.40.2395.991.41.1502
092.50.2266.990.41.1502 092.50.2446.990.41.1502 092.50.2644.990.41.1502

Why choose CHINAMFG slewing bearings
A CHINAMFG 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 CHINAMFG bearings
1.introduction:we are a manufacturer of slewing bearing since 1993, our factory occupies a area of 30000square CHINAMFG 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 CHINAMFG slewing bearings

Quality Control Process of CHINAMFG 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 CHINAMFG 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
7. 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 CHINAMFG 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$ 400/Piece
1 Piece(Min.Order)




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.

In what industries or scenarios are slewing rings commonly employed?

Slewing rings find extensive use in various industries and scenarios where controlled rotational movement and load-bearing capabilities are required. Here’s a detailed explanation of the industries and scenarios where slewing rings are commonly employed:

  • Construction and Heavy Machinery: Slewing rings are widely used in the construction industry for applications such as cranes, excavators, and concrete pumps. They enable the rotation of booms and arms, allowing for efficient material handling, precise positioning, and heavy load support.
  • Wind Energy: Slewing rings play a crucial role in wind turbines. They support the rotor and enable the yaw and pitch movements necessary to optimize wind capture and power generation. Slewing rings in wind turbines must handle substantial loads and operate reliably in harsh environmental conditions.
  • Industrial Automation: In industrial automation, slewing rings are employed in indexing tables, turntables, robotic arms, and packaging machinery. They enable precise and controlled rotation, facilitating automated processes, assembly lines, and material handling systems.
  • Transportation and Automotive: Slewing rings are commonly used in transportation and automotive applications, including vehicle cranes, truck-mounted cranes, aerial platforms, and rotating platforms for heavy-duty vehicles. They provide stable connections and controlled rotation, supporting tasks such as loading and unloading cargo or enabling safe access to elevated areas.
  • Marine and Offshore: Slewing rings are extensively employed in marine and offshore equipment, including ship cranes, davits, and rotating platforms on ships and offshore rigs. They withstand corrosive marine environments and heavy loads, enabling lifting operations and controlled rotation in challenging conditions.
  • Aerospace and Defense: Slewing rings are vital components in aerospace and defense applications, such as radar systems, missile launchers, and satellite antennas. They facilitate precise rotational movements required for tracking, targeting, and communication systems, and must meet stringent requirements for reliability and precision.
  • Medical and Rehabilitation: Slewing rings are used in medical and rehabilitation equipment like patient lifts, adjustable beds, and examination tables. They enable smooth and controlled movement, aiding in patient transfers, positioning, and providing comfort and support.

These are just a few examples of the industries and scenarios where slewing rings are commonly employed. Their versatility, load-bearing capacity, and ability to facilitate controlled rotation make them essential components in a wide range of applications across industries such as construction, renewable energy, industrial automation, transportation, marine, aerospace, and healthcare.

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.

China high quality Slewing Rings with External Gear 091.35.2012.990.11.1502 Turntable Bearings 091.40.2003.990.11.1502  China high quality Slewing Rings with External Gear 091.35.2012.990.11.1502 Turntable Bearings 091.40.2003.990.11.1502
editor by CX 2024-04-12