Product Description
Precision Cross Roller Bearing, the inner structure of which adopts the vertical and cross arrangement of cylindrical rollers with 90°, can bear radial load, double-direction thrust loads and overturning moment at the same time. Combined with its high rigidity, it can be applied to the joints and rotating parts of industrial robots, rotary tables of machining centers, rotating parts of manipulators, precision rotary tables, medical equipments, measuring instruments, IC manufacturing machines, etc.
Precision Cross Roller Bearing has 3 structure types, including bearing with cage, with separator, and with full complement. Cage and separator types are suitable to low friction moment and high-speed rotation, while full complement is suitable to low-speed rotation and heavy load.
Precision Cross Roller Bearing has the following 7 structure series:
Precision Cross Roller Bearing has the following 7 structure series:
| RB Series |
| RE Series |
| RU Series |
| RA Series |
| RA-C Series |
| CRB Series |
| CRBH Series |
Technological Process
All the forging will be inspected to ensure there is no defect in the material.
Rough Turning with 2-3mm allowance according to the drawing, at the same time every parts will be inspected to ensure the dimension is satisfy with the drawing requirements.
Finish lathing with 2-5mm allowance according to the drawing, all the parts will be inspected to ensure the dimension is satisfy with the drawing requirements
The tolerance of center diameter shall be 0.05mm, and the holes shall meet the drawing requirements . The holes of each part shall be tested to ensure that they meet the requirements of the drawing.
Quenching will be done on the raceway of the bearing to improve the hardness, CHINAMFG resistance and fatigue strength of the bearing. The hardness will be satisfy with customer’s requirements after quenching. after quenching,the outer diameter,ovality will be inspected.
Grinding include rough grinding,regrinding and finished grinding. After each grinding processing, the bearing will be tempered to prevent the deformation and cracking, and release the internal stress to make the material stable,and ensure the processing accuracy, then the next grinding will be done, Top and bottom surface,inner and outer diameter, raceway will be grinded to make the dimension and the precision meet the drawing requirements, every parts will be inspected to ensure all the bearing meet the drawing requirements
100% inspection shall be carried out on each part to ensure the inner diameter, outer diameter, surface and raceway of the bearing ring can satisfy the drawing requirements, and ready for assembly.
Final inspection will be done after assembly to ensure all the bearing are 100% qualified.
Typing according to the customer’s requirements, or typing our company’s brand, and the bearing will be packaged by Plastic film+plywood case, or according to the customer’s requirements.
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| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | High Speed, Vacuum, Antimagnetic, Cold-Resistant, Corrosion-Resistant, Heat-Resistant |
| Sealing Gland: | Sealed On One Side |
| Rolling-Element Number: | Single-Row |
| Material: | Bearing Steel |
| Type: | No Gear |
| Samples: |
US$ 10/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
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Can you explain the primary functions and roles of slewing rings in various applications?
Slewing rings play crucial functions and serve different roles in various applications across industries. These specialized bearings enable controlled rotational movement and support heavy loads. Here’s a detailed explanation of the primary functions and roles of slewing rings in different applications:
- Construction and Cranes: In construction machinery and cranes, slewing rings are used to support the boom or jib, enabling 360-degree rotation. They provide a stable and low-friction interface that allows for efficient material handling and precise positioning of heavy loads. Slewing rings in these applications must withstand high axial, radial, and moment loads.
- Wind Turbines: Slewing rings play a critical role in wind turbine systems. They support the rotor and allow it to rotate according to wind direction, facilitating efficient power generation. Slewing rings in wind turbines must handle significant loads while ensuring smooth rotation and precise alignment between the rotor and the nacelle.
- Industrial Equipment: Slewing rings find applications in various industrial equipment, including indexing tables, turntables, robotic arms, and packaging machinery. In these applications, slewing rings enable controlled and precise rotation, allowing for accurate positioning, indexing, and automation. They contribute to the overall efficiency and functionality of industrial machinery.
- Transportation and Automotive: Slewing rings are utilized in transportation and automotive applications, such as vehicle cranes, aerial platforms, and rotating platforms for heavy-duty vehicles. They provide a stable and reliable connection that enables safe and controlled rotation. In these applications, slewing rings must withstand dynamic loads and harsh operating conditions while ensuring the safety and stability of the equipment.
- Medical and Rehabilitation Equipment: Slewing rings are important components in medical and rehabilitation equipment, including patient lifts and adjustable beds. They enable smooth and controlled movement, allowing for easy and safe patient transfers and positioning. Slewing rings in these applications must provide precise and quiet operation, ensuring patient comfort and care.
- Aerospace and Defense: Slewing rings are utilized in aerospace and defense applications, such as radar systems, missile launchers, and satellite antennas. They enable precise and controlled movement in critical systems, contributing to accurate tracking, targeting, and communication. Slewing rings in aerospace and defense applications must meet stringent requirements for reliability, precision, and durability.
- Marine and Offshore: Slewing rings are employed in marine and offshore equipment, including cranes, davits, and rotating platforms on ships and offshore rigs. They enable heavy lifting and controlled rotation in challenging marine environments. Slewing rings in marine applications must be corrosion-resistant and capable of withstanding harsh weather conditions and high loads.
Overall, slewing rings serve as essential components in a wide range of applications, enabling controlled rotation, supporting heavy loads, and ensuring precise positioning. Their versatility and ability to withstand varying loads and operating conditions make them invaluable in industries such as construction, wind energy, industrial automation, transportation, healthcare, aerospace, and marine sectors.
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.
What safety considerations should be taken into account when using slewing rings in industrial settings?
When using slewing rings in industrial settings, several safety considerations should be taken into account to ensure the well-being of personnel, equipment, and the surrounding environment. Here’s a detailed explanation of the safety considerations when using slewing rings:
- Proper Training and Familiarity: Personnel involved in the operation, maintenance, and servicing of systems equipped with slewing rings should receive proper training and be familiar with the specific procedures and safety guidelines related to slewing ring usage. This includes understanding the system’s limitations, recommended operating parameters, and emergency procedures.
- Safe Working Distance: Establishing a safe working distance is crucial when working with rotating systems that incorporate slewing rings. Adequate barriers, guardrails, or safety signs should be in place to prevent unintended access to hazardous areas around the slewing ring. Personnel should be aware of the safe working zones and maintain a safe distance from the rotating components.
- Lockout/Tagout Procedures: Before performing any maintenance or repair tasks on systems with slewing rings, proper lockout/tagout procedures should be followed to ensure the equipment is de-energized and cannot be accidentally started. This prevents unexpected rotation of the slewing ring during maintenance activities, reducing the risk of entanglement or injury.
- Personal Protective Equipment (PPE): Personnel working with or around slewing rings should wear appropriate personal protective equipment, such as safety helmets, protective eyewear, gloves, and safety footwear. The specific PPE requirements may vary depending on the nature of the industrial setting and potential hazards associated with slewing ring operation.
- Regular Inspection and Maintenance: Routine inspection and maintenance of slewing rings are essential for identifying any signs of wear, damage, or misalignment. Regularly scheduled inspections help detect potential issues early on and allow for timely repairs or replacements, reducing the risk of sudden failures or accidents during operation.
- Proper Lubrication: Adequate lubrication of slewing rings is crucial for their optimal performance and longevity. Lubrication intervals and methods recommended by the manufacturer should be followed to ensure proper lubrication. Improper or inadequate lubrication can lead to increased friction, overheating, accelerated wear, and potential failure of the slewing ring.
- Environmental Considerations: The environmental conditions in which slewing rings operate should be taken into account for safety purposes. Factors such as temperature extremes, moisture, dust, or corrosive substances can affect the performance and durability of slewing rings. Proper sealing, protective coatings, and environmental controls should be implemented to mitigate potential hazards and ensure safe operation.
- Emergency Stop and Shutdown: Rotating systems equipped with slewing rings should be equipped with emergency stop buttons or other means of immediate shutdown. Personnel should be trained on how to use these emergency stop features effectively and be aware of the emergency shutdown procedure to quickly and safely halt the rotation of the slewing ring in case of an emergency.
- Compliance with Regulations and Standards: It is essential to comply with relevant safety regulations, standards, and industry guidelines when using slewing rings in industrial settings. These regulations may vary depending on the region and industry-specific requirements. Adhering to these guidelines helps ensure the safety and compliance of the equipment and protects against potential hazards.
In summary, safety considerations when using slewing rings in industrial settings include proper training, maintaining safe working distances, following lockout/tagout procedures, wearing appropriate PPE, conducting regular inspections and maintenance, ensuring proper lubrication, considering environmental factors, implementing emergency stop measures, and complying with safety regulations. By addressing these safety considerations, the risks associated with slewing ring operation can be minimized, promoting a safe working environment and preventing accidents or injuries.
editor by CX 2024-03-26