Product Description

Please see details for  slewing ring bearing Slewing Bearing 

If you need more details, please feel free to contact us for designing and producing, Attn: Susan Yang

1. Why choose CHINAMFG slewing bearings
Who we are?
We (HangZhou CHINAMFG special heavy-duty and large bearing manufacturing CO., LTD) are a professional
bearing manufacturer in the world, established in 2000, specializing in slewing bearings, slewing drives
and special bearings, with design, production, sales, marketing and service from OD200mm to 8000mm.
For 18 years experiences, our bearings have flied to more than 50 countries.

Our technical team:
We have 60 employees, with 6 experienced engineers and professional technicists.
All our bearings are designed by CAD-programs, made according to customers’ special demands.
Our technical team can also verify safety & reliability depending on the load case and the strength of raceway
as well as gear and bolt connections.

Equipped with advanced manufacturing equipments and test instruments, all bearings are of uniform marking
and packing with superior quality, reasonable prices and perfect services.

We have been certificated by ISO9001:2008, and we are also aligned to international quality standards
from application consulting and engineering to productions, examinations, documentations and dispatch.
We will prepare additional test reports if customers need.

2. Structure of CHINAMFG slewing bearings
Main Types:
Single row ball slewing ring bearings
Double row ball slewing ring bearings
Crossed roller slewing ring bearing
Three row cylindrical roller slewing bearings
BALL & ROLLER combined slewing bearings
Flanged slewing ring bearing
Gear Type:
Slewing bearings with external gear
Slewing bearings with internal gear
Slew bearings without gear
Flange type:
Slewing bearings with external flange and internal gear
Slew rings with internal flange and external gear
Slew bearings with external and internal flange

3. About CHINAMFG bearings Advantages:
3.1 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. 
3.2 Featured products: slewing bearing and slewing drive
3.3 Capital: Current is 1 million RMB, but we are increasing the capital to 10 million RMB
3.4 Workers: 60
3.5 Certificate: ISO9001:2008, 3.1 certificate, CCS certificate
All CHINAMFG slew rings can betested by the 3rd party inspection organization if customer requires, such as BV, CCS, SGS, LR, ABS and so on. All swing bearings inspection reports will be supplied to customers, including raw material certificate, heat treatment certificate, UT&PT and so on.
3.6 Annual Exportation: 8 million USD
3.7 Warranty Period: All CHINAMFG slewing ring bearings have a warranty period of 18 months, for some special working condition, warranty period can be lengthened to 3-4 years.
3.8 Production Time: 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.
3.9 Technical Control
All CHINAMFG slewing ring bearings are forged rings with material steel 50Mn or 42CrMo, slewing rings are machined by CNC lathe, slew bearings raceway are quenched via medium-frequency hardening with hardness 55-60HRC, turntable bearings are drilled holes by CNC drilling machine, slew gears are machined by hobbing machine with gear quenched if required, swing bearings then are grinded by grinding machine with higher precision.

4. CHINAMFG Slewing Bearing Packing 
4.1 Basic 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;

4.2 CHINAMFG slewing ring bearings can be packed by different ways.
If bearing diameter is less than 2300mm, slewing rings will be usually packed by square plywood case.
If bearing diameter is more than 2300mm, slewing rings can be packed by square plywood case, round plywood case, or steel tripod. Every package way can be totally kept goods safely.

5. CHINAMFG Slewing Bearing Transportation:
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.

Flanged slewing bearing: internal flange and external gear
E.505.20.00.C, E.650.20.00.C, E.750.20.00.C, E.850.20.00.C, E.950.20.00.C, E.1050.20.00.C, E.1200.20.00.C
E.1100.32.00.C, E.1200.32.00.C, E.1300.32.00.C, E.1400.32.00.C, E.1500.32.00.C, E.1600.32.00.C
Flanged slewing bearing: internal gear and external flange
I.505.20.00.C, I.650.20.00.C, I.750.20.00.C, I.850.20.00.C, I.950.20.00.C, I.1050.20.00.C, I.1200.20.00.C
I.1100.32.00.C, I.1200.32.00.C, I.1300.32.00.C, I.1400.32.00.C, I.1500.32.00.C, I.1600.32.00.C
Flanged slewing bearing: internal flange and external flange
SD.505.20.00.C, SD.650.20.00.C, SD.750.20.00.C, SD.850.20.00.C, SD.950.20.00.C, SD.1050.20.00.C,
SD.1100.32.00.C, SD.1200.32.00.C, SD.1300.32.00.C, SD.1400.32.00.C, SD.1500.32.00.C,

Four point contact ball slewing bearing: external gear type
E.505.20.00.B, E.650.20.00.B, E.750.20.00.B, E.850.20.00.B, E.950.20.00.B, E.1050.20.00.B, E.1200.20.00.B
E.900.25.00.B, E.1000.25.00.B, E.1100.25.00.B, E.1200.25.00.B
E.318.22.00.D.1, E.403.22.00.D.1
E.535.25.00.D.1, E.589.25.15.D.1, E.595.25.00.D.6, E.864.25.00.D.5, E.972.25.00.D.3, E.1080.25.00.D.5, E.1200.25.00.D.1
E.595.32.00.D.1, E.695.32.15.D.1, E.816.32.00.D.1, E.980.32.00.D.1, E.1144.32.15.D.1, E.1289.32.15.D.1, E.1380.32.15.D.1
Four point contact ball slewing bearing: internal gear type
I.486.20.00.B, I.616.20.00.B, I.716.20.00.B, I.816.20.00.B, I.916.20.00.B, I.1016.20.00.B, I.1166.20.00.B
I.855.25.00.B, I.955.25.00.B, I.1055.25.00.B, I.1155.25.00.B
I.340.16.00.D.1, I.486.16.00.D.1, I.535.22.00.D.3.V
I.562.25.15.D.1, I.570.25.00.D.1, I.635.25.00.D.3.V, I.750.25.00.D.1, I.850.25.00.D.1, I.950.25.00.D.1
I.980.25.00.D.3, I.1015.25.15.D.1
I.810.32.00.D.1, I.815.32.10.D.1, I.816.32.10.D.1
Four point contact ball slewing bearing: none gear type
SD.486.20.00.B, SD.616.20.00.B, SD.716.20.00.B, SD.816.20.00.B, SD.916.20.00.B, SD.1016.20.00.B
SD.855.25.00.B, SD.955.25.00.B, SD.1055.25.00.B, SD.1155.25.00.B
SD.234.14.00.D.1, SD.329.20.00.D.1, SD.430.25.15.D.1, SD.475.20.00.D.1, SD.505.25.15.D.6

Double row ball slewing bearing: internal gear type
I.973.2.22.00.D.6, I.1165.2.22.00.D.6, I.1200.2.25.00.D.6, I.1346.2.30.05.D.6, I.1750.2.30.20.D.6
Double row ball slewing bearing: external gear type
E.504.2.25.00.D.6, E.608.2.25.10.D.6, E.712.2.25.12.D.6, E.1079.2.20.12.D.3-V, E.1080.2.22.00.D.6, E.1200.2.25.00.D.1

Crossed roller slewing bearing: internal gear type
I.1165.25.12.D.3.RV, I.1251.30.12.D.1-RV, I.1346.30.15.D.1-RV, I.1460.30.12.D.1-RV, I.1530.40.12.D.1-RV
I.1770.50.17.D.1-RV, I.2571.50.15.D.1-RV
Crossed roller slewing bearing: external gear type
E.1144.30.12.D.1-RV, E.1144.30.12.D.3-RV, E.1390.30.15.D.1-R, E.1476.45.15.D.1-RV, E.1604.50.10.D.1-RV, E.1805.45.17.D.3-R

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Standard or Nonstandard: Standard
Feature: Cold-Resistant, Corrosion-Resistant, Heat-Resistant
Sealing Gland: Sealed On Both Sides
Rolling-Element Number: Single-Row
Roller Type: Deep Groove Raceway
Material: 50mn or 42CrMo

US$ 260/Piece
1 Piece(Min.Order)




What are the different types and configurations of slewing rings available in the market?

Slewing rings are available in various types and configurations to cater to the diverse needs of different applications. The following are the different types and configurations of slewing rings commonly available in the market:

  • Single-Row Ball Slewing Rings: This type of slewing ring consists of a single row of balls placed between two rings. It offers compact design, low weight, and high load-carrying capacity. Single-row ball slewing rings are commonly used in applications where axial and radial loads need to be supported.
  • Double-Row Ball Slewing Rings: Double-row ball slewing rings have two rows of balls, providing higher load-carrying capacity compared to single-row designs. They are suitable for applications that require increased load capacity and improved stiffness.
  • Three-Row Roller Slewing Rings: Three-row roller slewing rings feature three rows of rollers arranged in a crisscross pattern. This configuration allows for higher load-carrying capacity and increased rigidity. Three-row roller slewing rings are commonly used in heavy-duty applications where significant radial, axial, and moment loads need to be supported.
  • Ball and Roller Combination Slewing Rings: In some cases, slewing rings are designed with a combination of ball and roller elements. This configuration provides a balance between load capacity and reduced friction. It offers improved rotational characteristics and is often used in applications requiring high load capacity and smooth rotation.
  • Internal Gear and External Gear Slewing Rings: Slewing rings can be equipped with internal or external gears. Internal gear slewing rings have the gear teeth on the inner ring, while external gear slewing rings have the gear teeth on the outer ring. The gear mechanism allows for controlled rotation and can be driven by external components such as motors or hydraulic systems. The choice between internal or external gear configuration depends on the specific application requirements.
  • Non-Gear Slewing Rings: Some slewing rings are designed without integrated gears. These non-gear slewing rings are often used in applications where the rotation is driven by external components or when a separate gear mechanism is already in place.
  • Customized and Specialized Slewing Rings: In addition to the standard types and configurations, slewing rings can be customized and designed to meet specific application requirements. Customized slewing rings may involve variations in dimensions, load capacity, gear specifications, sealing systems, or materials to suit unique applications or challenging operating conditions.

The availability of different types and configurations of slewing rings allows for the selection of the most suitable design based on factors such as load requirements, space limitations, rotational speed, environmental conditions, and application-specific needs. It is essential to consider these factors when choosing a slewing ring to ensure optimal performance and reliability in the intended application.

Can you provide examples of products or machinery that commonly use slewing rings?

Slewing rings are widely used in various industries and play a vital role in the functioning of numerous products and machinery. They offer rotational support, precise motion control, and load-bearing capabilities. Here are some examples of products or machinery that commonly utilize slewing rings:

  • Construction Machinery: Slewing rings are extensively used in construction machinery such as excavators, cranes, concrete pumps, and tower cranes. They enable the rotation and movement of the boom, arm, and bucket, allowing for precise control during digging, lifting, and material placement operations.
  • Material Handling Equipment: Slewing rings are essential components in material handling equipment like forklifts, stackers, and reach stackers. They facilitate the rotation and swiveling of the mast or boom, enabling efficient loading, unloading, and stacking of goods in warehouses, logistics centers, and ports.
  • Wind Turbines: Slewing rings are crucial in wind turbines, where they support the yaw and pitch mechanisms. The yaw system allows the turbine to rotate and face the wind direction, while the pitch system adjusts the angle of the blades for optimal wind capture. Slewing rings enable precise and controlled movement, ensuring efficient wind energy conversion.
  • Cranes: Various types of cranes, including mobile cranes, crawler cranes, and tower cranes, rely on slewing rings for their rotation and lifting capabilities. Slewing rings support the crane’s superstructure, allowing it to rotate horizontally, and provide stability and load-bearing capacity during lifting operations.
  • Rotary Drilling Rigs: Slewing rings are commonly used in rotary drilling rigs for oil and gas exploration, foundation construction, and mining operations. They enable the rotation and positioning of the drill mast, allowing for precise drilling and borehole creation.
  • Railway Equipment: Slewing rings find application in railway equipment such as rail cranes, railway maintenance machines, and turntables. They facilitate the rotation and movement of equipment, ensuring efficient maintenance, repairs, and track positioning.
  • Robotics: Slewing rings are integral to robotic systems, including industrial robots, robotic arms, and robotic welding systems. They enable the rotational movement and articulation of the robot’s joints, allowing for precise and controlled manipulation in manufacturing, assembly, and automation processes.
  • Solar Tracking Systems: Slewing rings are employed in solar tracking systems to orient solar panels toward the sun. They enable the rotation and tilting of the panels, maximizing solar energy absorption and optimizing power generation in solar farms and photovoltaic systems.
  • Turntables and Rotating Platforms: Slewing rings are used in turntables and rotating platforms found in various applications. They support the rotational movement of entertainment stages, amusement park rides, revolving restaurants, and display platforms in trade shows or exhibitions.

These are just a few examples of the diverse range of products and machinery that commonly utilize slewing rings. Their ability to provide rotational support, precise motion control, and load-bearing capabilities makes them indispensable components in numerous industries, including construction, material handling, energy, transportation, robotics, and entertainment.

What advantages do slewing rings offer compared to other rotational components?

Slewing rings offer several advantages compared to other rotational components. Their unique design and features make them a preferred choice in various applications. Here’s a detailed explanation of the advantages that slewing rings offer:

  • Compact Design: Slewing rings have a compact design that allows for efficient use of space. Compared to other rotational components such as gears and bearings, slewing rings provide a compact solution for supporting axial, radial, and moment loads while enabling rotational motion. Their compactness is especially advantageous in applications with limited space or weight constraints.
  • High Load-Carrying Capacity: Slewing rings are designed to handle significant loads. They are capable of supporting both axial and radial loads, as well as moment loads that result from uneven weight distribution or external forces. The robust construction and precise engineering of slewing rings enable them to withstand heavy loads, making them suitable for applications that require high load-carrying capacity.
  • Smooth Rotation: Slewing rings offer smooth rotation, allowing for precise and controlled motion. The rolling elements, whether balls or rollers, are positioned and guided within the raceways of the slewing ring to minimize friction and ensure smooth movement. This smooth rotation contributes to precise positioning and controlled motion, which is essential in applications that require accurate positioning and smooth operation.
  • Integrated Gear Mechanism: Many slewing rings come with an integrated gear mechanism. This eliminates the need for additional gearing components, simplifies the design, and reduces assembly time and costs. The integrated gear mechanism allows for torque transmission and rotational control, enabling precise and controlled motion without the need for external gearing systems.
  • Backlash Control: Slewing rings can be designed with minimal backlash, ensuring precise motion control. Backlash refers to the play or clearance between mating gears or components, which can lead to lost motion or inaccuracies in positioning. By minimizing backlash, slewing rings offer improved accuracy and repeatability in motion control applications.
  • Versatility and Customization: Slewing rings are highly versatile and can be customized to meet specific application requirements. They can be tailored in terms of dimensions, load capacity, mounting interfaces, gear specifications, sealing systems, and materials. This versatility allows slewing rings to be optimized for various industries and applications, ensuring the best performance and compatibility.
  • Durable and Low Maintenance: Slewing rings are designed to be durable and require minimal maintenance. They are constructed with high-quality materials, precision manufacturing, and appropriate sealing systems to withstand harsh operating conditions and contaminants. This durability and low maintenance requirement contribute to the long service life and reliability of slewing rings.

Overall, slewing rings offer advantages such as compact design, high load-carrying capacity, smooth rotation, integrated gear mechanism, backlash control, versatility, customization options, and durability. These advantages make slewing rings a preferred choice in various applications, including construction machinery, material handling equipment, cranes, wind turbines, robotics, and manufacturing systems.

China Professional Torriani Gianni (TG) Slew Bearing External Gear Slewing Ring (E. 864.25.00. D. 5)  China Professional Torriani Gianni (TG) Slew Bearing External Gear Slewing Ring (E. 864.25.00. D. 5)
editor by CX 2024-04-11