China Best Sales CHINAMFG Slewing Bearing CHINAMFG Bearing Powerful Certified Distributor with Very Good Price

Product Description


Company Profile

ZheJiang CHINAMFG Industrial certified distributor of CHINAMFG bearing for more that 10 years!

About ZheJiang CHINAMFG Industrial

ZheJiang CHINAMFG Industrial Technology Co.,Ltd focus on the transmission industry for over 20 years, Our knowledge and deep understanding in the industry market make us the ultimate business partner in China. CHINAMFG is the best supplier of international and domestic, high quality and customization products. We take good care of the customers issues that can be beneficial or useful to them to make a CHINAMFG situation.


For over 20 years experiences, CHINAMFG can provide you the most complete one-stop comprehensive solutions and service of purchasing mechanical, CHINAMFG bearing and electronic products.

1, transmission products including: high and low voltage electric motor, reducer, geared motor,

2, automation products include: automatic system, motion control, low voltage control products and systems, sensors and communication products.

3, power distribution products include: low-voltage distribution products, medium voltage circuit breaker, intelligent building system integration equipment. high and low voltage frequency converter and complete sets of electrical cabinet.

4, machinery spare parts, water pump, air compressor, etc.

Product Description

Slewing bearings
Slewing bearings comprise an inner ring and an outer ring, 1 of which usually incorporates a gear. Together with attachment holes in both rings, they enable an optimized power transmission with a simple and quick connection between adjacent machine components. The bearing raceways, in conjunction with the rolling elements and cages or spacers, are designed to accommodate loads acting singly or in combination, and in any direction.



Designation Principal dimensions Basic load ratings Speed ratings
    dynamic static Reference speed Limiting speed

















  W 618/1   1   3   1   0.052   0.012   240 000   150 000
  W 619/1   1   4   1.6   0.079   0.018   220 000   140 000
  W 638/1   1   3   1.5   0.052   0.012   240 000   150 000
  W 60/1.5   1.5   6   2.5   0.19   0.051   180 000   110 000
  W 618/1.5   1.5   4   1.2   0.062   0.016   220 000   140 000
  W 619/1.5   1.5   5   2   0.135   0.036   200 000   120 000
  W 630/1.5-2Z   1.5   6   3   0.19   0.051   180 000   90 000
  W 638/1.5-2Z   1.5   4   2   0.062   0.016   220 000   110 000
  W 602   2   7   2.8   0.221   0.067   160 000   100 000
  W 602 X-2ZS   2   7   3   0.221   0.067   160 000   80 000
  W 617/2   2   4   1.2   0.068   0.019   200 000   130 000
  W 618/2   2   5   1.5   0.094   0.571   200 000   120 000
  W 618/2 X   2   5   2   0.094   0.571   200 000   120 000
  W 619/2   2   6   2.3   0.19   0.051   180 000   110 000
  W 619/2 X   2   6   2.5   0.19   0.051   180 000   110 000
  W 619/2 X-2Z   2   6   2.5   0.19   0.051   180 000   90 000
  W 637/2-2Z   2   4   2   0.068   0.019   200 000   100 000
  W 638/2 X-2Z   2   5   2.5   0.094   0.571   200 000   100 000
  W 638/2-2Z   2   5   2.3   0.094   0.571   200 000   100 000
  W 639/2-2Z   2   6   3   0.19   0.051   180 000   90 000
  W 60/2.5   2.5   8   2.8   0.312   0.088   160 000   95 000
  W 618/2.5   2.5   6   1.8   0.117   0.036   170 000   110 000
  W 619/2.5   2.5   7   2.5   0.221   0.067   160 000   100 000
  W 630/2.5-2Z   2.5   8   4   0.312   0.088   160 000   80 000
  W 638/2.5-2Z   2.5   6   2.6   0.117   0.036   170 000   85 000
  623   3   10   4   0.54   0.18   130 000   80 000
  623-2RS1   3   10   4   0.54   0.18     40 000
  623-2Z   3   10   4   0.54   0.18   130 000   60 000
  623-Z   3   10   4   0.54   0.18   130 000   80 000
  W 603   3   9   3   0.325   0.095   140 000   90 000


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Standard or Nonstandard: Standard
Feature: High Speed
Sealing Gland: SKF Bearing


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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

What is a slewing ring, and how is it used in mechanical systems?

A slewing ring, also known as a slewing bearing or turntable bearing, is a specialized type of rolling element bearing that enables rotational movement between two components. It consists of an inner ring, an outer ring, rolling elements (such as balls or rollers), and often a gear mechanism. Slewing rings are used in mechanical systems where there is a need for smooth and controlled rotation. Here’s a detailed explanation of what a slewing ring is and how it is used:

  • Structure and Components: A slewing ring typically has a large diameter compared to its thickness, allowing it to support axial, radial, and moment loads. The inner and outer rings have raceways that the rolling elements move along. The rolling elements, which can be balls or rollers, distribute the load and facilitate smooth rotation. In some cases, a gear mechanism is integrated into the slewing ring, allowing it to act as a rotational drive system.
  • Rotational Movement: The primary function of a slewing ring is to enable rotational movement between two components. It provides a stable and low-friction interface that allows one component to rotate relative to the other. The rolling elements within the raceways minimize friction and distribute the load evenly, resulting in smooth and controlled rotation. Slewing rings can support both continuous rotation and intermittent or oscillating movement, depending on the application requirements.
  • Load Support: Slewing rings are designed to support various types of loads. They can handle axial loads, which are forces acting parallel to the axis of rotation, as well as radial loads, which are forces acting perpendicular to the axis of rotation. Additionally, slewing rings can accommodate moment loads, which are a combination of axial and radial loads that create bending or twisting forces. The load-carrying capacity of a slewing ring depends on factors such as its size, design, and choice of rolling elements.
  • Applications: Slewing rings find applications in a wide range of mechanical systems across different industries. Some common uses include:
  • Construction and Cranes: Slewing rings are extensively used in construction machinery, cranes, and mobile equipment. They enable 360-degree rotation of the boom or jib, allowing for efficient material handling and positioning.
  • Wind Turbines: Slewing rings are crucial components in wind turbine systems. They support the rotor, allowing it to rotate according to wind direction, and provide a connection between the rotor and the nacelle, enabling yaw movement.
  • Industrial Equipment: Slewing rings are utilized in various industrial equipment, including indexing tables, turntables, robotic arms, and packaging machinery. They facilitate precise and controlled rotation in these applications.
  • Transportation and Automotive: Slewing rings are employed in transportation and automotive applications, such as vehicle cranes, aerial platforms, and rotating platforms for heavy-duty vehicles. They enable safe and smooth rotation in these specialized systems.
  • Medical and Rehabilitation Equipment: Slewing rings are used in medical and rehabilitation equipment, such as patient lifts and adjustable beds. They allow for smooth and controlled movement, aiding in patient care and mobility assistance.

In summary, a slewing ring is a specialized bearing that enables controlled rotational movement between components in mechanical systems. Its ability to support various loads, provide smooth rotation, and accommodate different applications makes it a valuable component in a wide range of industries.

How do slewing rings contribute to precise and controlled motion in machinery?

Slewing rings play a crucial role in enabling precise and controlled motion in machinery. Their design and functionality contribute to achieving accurate positioning, smooth rotation, and controlled movement. Here’s a detailed explanation of how slewing rings contribute to precise and controlled motion:

  • Precision Engineering: Slewing rings are meticulously engineered to provide high precision in motion control. The manufacturing processes involve tight tolerances and precise machining to ensure accurate dimensions and alignment of the rolling elements and raceways. This precision engineering minimizes any deviations or errors in motion, allowing for precise positioning and controlled movement.
  • Low Friction and Smooth Rotation: Slewing rings are designed to minimize friction and enable smooth rotation. The rolling elements, whether balls or rollers, are precisely positioned and guided within the raceways of the slewing ring. This design ensures that the rolling elements make contact with the raceways at specific angles, reducing friction during rotation. The low-friction characteristics allow for smooth and controlled motion, enabling precise positioning without undue resistance or jerky movements.
  • Integrated Gear Mechanism: Many slewing rings are equipped with an integrated gear mechanism. The gear teeth on the inner or outer ring of the slewing ring engage with external gears or pinions, providing a means to transmit torque and control rotational motion. The gear mechanism allows for precise and controlled movement, enabling operators or automated systems to achieve accurate positioning and controlled rotation at desired speeds.
  • Backlash Control: Backlash refers to the slight play or clearance between mating gears or components. Slewing rings are designed to minimize backlash, particularly in applications that require precise motion control. By reducing or eliminating backlash, slewing rings ensure that there is minimal lost motion or error when initiating rotational movement or changing direction. This feature contributes to improved accuracy and controlled motion.
  • Stiffness and Rigidity: Slewing rings are designed to provide high stiffness and rigidity, minimizing deflection or deformation during operation. This characteristic is especially important in applications where precise and controlled motion is required. The high stiffness of slewing rings ensures that the applied forces and torques are efficiently transmitted, allowing for accurate positioning and controlled motion without significant distortion or flexing.
  • Positioning Sensors and Feedback Systems: In conjunction with slewing rings, machinery often incorporates positioning sensors and feedback systems. These sensors and systems provide real-time data on the position, speed, and rotation of the slewing ring. By continuously monitoring and adjusting the motion based on the feedback, precise and controlled movement can be achieved, enabling accurate positioning and motion control.

Overall, slewing rings contribute to precise and controlled motion in machinery through their precision engineering, low friction, integrated gear mechanisms, backlash control, stiffness, and compatibility with positioning sensors and feedback systems. These features ensure accurate positioning, smooth rotation, and controlled movement, making slewing rings essential components for applications that require precise motion control in various industries such as construction, material handling, robotics, and manufacturing.

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.

China Best Sales CHINAMFG Slewing Bearing CHINAMFG Bearing Powerful Certified Distributor with Very Good Price  China Best Sales CHINAMFG Slewing Bearing CHINAMFG Bearing Powerful Certified Distributor with Very Good Price
editor by Dream 2024-05-15