Slewing bearings
Precision Slewing bearings Manufacturer | AMIGO
Slewing bearings are specialized, high-precision bearings designed to handle large axial, radial, and tilting moment loads.Our slewing bearings are crafted from high-quality materials, providing durability, strength, and resistance to wear. Available in various types, including single-row and double-row ball slewing bearings, cross-roller slewing bearings, and three-row roller slewing bearings, each design is tailored to specific load capacities and application requirements.
- High-Quality Materials
- Economical Pricing Options
- Worldwide Delivery
- Swift tailored processing of samples
Interchangeable With:NSK Slewing bearings, INA Slewing bearings, etc.
Selecting the right slewing bearing is essential for ensuring efficient, stable, and safe rotational movement in heavy-duty applications. Here are the key factors to consider when choosing slewing bearings:
1. Load Type and Capacity
- Axial, Radial, and Moment Loads: Identify the types and magnitudes of loads your application will apply. Single-row ball slewing bearings can handle light to moderate loads, while three-row roller bearings are suitable for extremely heavy loads.
- Static vs. Dynamic Load Capacity: Choose a bearing with both static and dynamic load capacities that exceed your requirements to ensure longevity and safety.
2. Bearing Type
- Single-Row Ball: Best for applications with light to moderate radial, axial, and moment loads, such as in small cranes or turntables.
- Double-Row Ball: Provides greater load-bearing capacity and stability, suitable for medium-sized machinery.
- Cross-Roller: Ideal for high-precision applications with moderate loads, such as robotics and medical equipment.
- Three-Row Roller: Built for heavy-duty applications with high axial, radial, and moment loads, used in large cranes and mining equipment.
3. Gear Options
- External or Internal Gear: Select a gear type based on the space constraints and drive mechanism of your system. External gears offer easy access, while internal gears are better for compact setups.
- No Gear Option: If your application requires a gearless system, consider a slewing bearing without integrated gears.
4. Rotation Speed
- Slewing bearings are typically designed for low to moderate rotational speeds. Check the maximum speed rating to ensure the bearing can handle your application’s operational speed without premature wear.
5. Mounting and Space Constraints
- Mounting Options: Ensure the bearing type is compatible with your mounting requirements, considering bore diameter, bolt hole pattern, and clearance.
- Size and Weight: Choose a bearing that fits your system's dimensions and weight limits without compromising load capacity.
6. Material and Environmental Conditions
- Material: High-grade alloy or stainless steel provides strength and corrosion resistance. Specialized coatings can enhance durability in harsh conditions.
- Temperature and Weather Resistance: For extreme temperatures or outdoor applications, select bearings with appropriate seals, lubricants, and material treatments to withstand environmental stress.
By evaluating these factors, you can select the slewing bearing that optimally meets your application’s specific load, speed, and environmental needs, ensuring reliable and efficient operation over the long term.
Slewing bearings Applications
- Machine Tools
- Heavy Duty Trucks
- Steel Production Equipment
- Steel Industry
Exploring the Various Types of Slewing bearings
With precision engineering and optional features like internal or external gear options, our slewing bearings offer high reliability, smooth operation, and easy installation for diverse industrial applications.
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Single-Row Four-Point Contact Ball Slewing Bearings
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Double-Row Ball Slewing Bearings
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Cross-Roller Slewing Bearings
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Three-Row Roller Slewing Bearings
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Single-Row Ball Slewing Bearings with Internal or External Gear
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Lightweight Slewing Bearings
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High-Speed Slewing Bearings
Single-Row Four-Point Contact Ball Slewing Bearings
This type has a single row of balls and is designed with four-point contact between the balls and raceway. It can accommodate axial, radial, and moment loads.
- Axial Load Capacity: 20,000–120,000 N
- Radial Load Capacity: 10,000–60,000 N
- Moment Load Capacity: Moderate, suitable for medium-duty applications.
- Outer Diameter: 300–2,500 mm
- Precision: Moderate, suitable for applications with minimal misalignment.
Double-Row Ball Slewing Bearings
These bearings have two rows of balls for increased load capacity and stability. They can handle higher radial and axial loads than single-row designs.
- Axial Load Capacity: 30,000–150,000 N
- Radial Load Capacity: 15,000–80,000 N
- Moment Load Capacity: Higher than single-row, suitable for medium-duty applications.
- Outer Diameter: 500–3,500 mm
- Precision: Moderate to high, providing better stability in applications with higher loads.
Cross-Roller Slewing Bearings
Cross-roller bearings have rollers arranged at a 90° angle to each other, alternating between adjacent rows. This design offers high rigidity and precision, capable of handling heavy radial, axial, and moment loads.
- Axial Load Capacity: 25,000–130,000 N
- Radial Load Capacity: 20,000–70,000 N
- Moment Load Capacity: High, suitable for precise positioning applications.
- Outer Diameter: 300–2,000 mm
- Precision: Very high, ideal for applications needing low rotational runout.
Three-Row Roller Slewing Bearings
Three-row roller bearings feature separate rows for axial, radial, and moment loads. Each row is dedicated to a specific load type, allowing these bearings to handle extremely high loads and moments.
- Axial Load Capacity: 50,000–500,000 N
- Radial Load Capacity: 40,000–200,000 N
- Moment Load Capacity: Very high, ideal for extreme-duty applications.
- Outer Diameter: 500–4,500 mm
- Precision: Moderate, with excellent load-bearing capacity for heavy applications.
Single-Row Ball Slewing Bearings with Internal or External Gear
Similar to the single-row ball bearing, this type includes an internal or external gear for easy integration with a drive system. The gear type is chosen based on space and access requirements.
- Axial Load Capacity: 15,000–110,000 N
- Radial Load Capacity: 8,000–50,000 N
- Moment Load Capacity: Moderate, suitable for compact applications.
- Outer Diameter: 300–2,500 mm
- Gear Options: Internal or external; typical module range 3–10 for gear teeth.
Lightweight Slewing Bearings
Designed to be compact and easy to install, lightweight slewing bearings typically feature a thin cross-section with a single row of balls. They are suitable for applications where load requirements are lower, but precision and space efficiency are priorities.
- Axial Load Capacity: 5,000–40,000 N
- Radial Load Capacity: 3,000–20,000 N
- Moment Load Capacity: Low to moderate, designed for lighter applications.
- Outer Diameter: 200–1,200 mm
- Precision: High for lightweight designs, often used in precision machinery.
High-Speed Slewing Bearings
Engineered for applications requiring higher rotational speeds, high-speed slewing bearings use low-friction materials and optimized lubricants to maintain performance at elevated speeds.
- Axial Load Capacity: 10,000–100,000 N
- Radial Load Capacity: 5,000–60,000 N
- Moment Load Capacity: Moderate, balancing speed with load capacity.
- Outer Diameter: 300–2,000 mm
- Speed Rating: Designed for high speeds, up to 500 RPM depending on size.
Comprehensive Guide to Slewing Bearings: Types, Applications, and Key Selection Criteria
Slewing bearings are critical components in various industrial applications, enabling smooth, reliable rotation for heavy loads across a wide range of equipment. From cranes and excavators to wind turbines and robotic arms, these bearings handle complex loads—including axial, radial, and tilting moments—allowing precise and stable movement even under demanding conditions. Selecting the right slewing bearing is essential to ensure performance, durability, and safety in each unique application. #Slewing bearings
Types of Slewing bearings and Their Applications
| Type of Slewing Bearing | Description | Applications |
|---|---|---|
| Single-Row Four-Point Contact Ball | Single row of balls with four-point contact, handles axial, radial, and moment loads | Light-duty cranes, turntables, small rotating equipment |
| Double-Row Ball | Two rows of balls for increased load capacity and stability | Medium-sized cranes, wind turbines, automated storage systems |
| Three-Row Roller | Three rows for separate axial, radial, and moment load handling, extremely high load capacity | Heavy-duty cranes, mining equipment, construction machinery |
| Single-Row Ball with Internal/External Gear | Includes an internal or external gear for integration with drive systems | Small cranes, manipulators, rotary tables |
| Lightweight Slewing Bearings | Compact, thin cross-section, suitable for light loads and tight spaces | Medical imaging, light-duty robotic arms, aerospace equipment |
| High-Speed Slewing Bearings | Optimized for higher rotational speeds with low-friction materials | Wind turbines, rotary compressors, high-speed rotary equipment |
Visual Guide to Slewing bearings Types
Comprehensive Visual Guide to Different Types of Slewing bearings: Understanding Slewing bearings Varieties
Customize Slewing bearings to Meet Your Specific Needs
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Frequently Asked Questions
Looking for further information on Slewing bearings Services?
1. What are slewing bearings, and how do they work?
Slewing bearings are large-diameter, high-load bearings that facilitate rotational movement in heavy-duty equipment. They are designed to handle axial, radial, and tilting moment loads, allowing for stable, smooth rotation in applications like cranes, wind turbines, and excavators.
2. What types of loads can slewing bearings handle?
Slewing bearings are engineered to manage complex load combinations: axial loads (vertical forces), radial loads (horizontal forces), and tilting moments (torques that twist the bearing). Some designs, like three-row roller bearings, handle very high loads by separating load types across different rows.
3. What are the main types of slewing bearings?
The primary types are single-row four-point contact ball bearings, double-row ball bearings, cross-roller bearings, and three-row roller bearings. Each type is tailored to handle specific load capacities, precision requirements, and application needs.
4. How do I select the right slewing bearing for my application?
Key factors to consider include load type and capacity, rotational speed, bearing type, gear options, environmental conditions, and space constraints. Matching these to your application ensures optimal performance and extended bearing life.
5. What industries use slewing bearings?
Slewing bearings are widely used in industries such as construction (cranes, excavators), renewable energy (wind turbines), mining, medical equipment (imaging machines), and robotics, where precise and stable rotation is critical.
6. Do slewing bearings come with internal or external gears?
Yes, many slewing bearings are available with either internal or external gears, allowing direct integration with a drive system. This gear configuration helps drive and control rotation in equipment.
7. What materials are slewing bearings made from?
Typically, slewing bearings are made from high-grade alloy steel or stainless steel for durability and strength. Some have additional coatings for corrosion resistance in harsh environments.
8. Can slewing bearings operate in extreme temperatures?
Yes, slewing bearings are available with special materials, seals, and lubricants that allow them to function in high or low temperatures. Always check the specific temperature range for the bearing model you select.
9. What maintenance do slewing bearings require?
Slewing bearings generally require regular lubrication to reduce friction and wear. Many come with sealed designs to protect from contaminants, which helps extend their service life. Lubrication schedules vary based on application and environment.