Product Description
Product Introduction
Self aligning ball bearings are very suitable for applications where the shaft and bearing seat are misaligned. Self aligning ball bearings are designed to adapt to 3 degree deviations and minimize friction and frictional heat. Due to the relatively small contact angle, the axial load capacity of these bearings is lower than that of angular contact bearings, etc.
Bearings can handle both static and dynamic misalignment. In addition, sealed self-aligning ball bearings can resist dust and other pollutants. Self aligning ball bearings have many applications, including mining, food processing, and large-scale production, such as in the textile industry.
*Construction of self-aligning ball bearings
The self-aligning ball bearing consists of an outer ring, an inner ring, a rolling element, a cage that accommodates the rolling element, and possible seals, which protect the rolling element and lubricant from contamination. Their design allows them to compensate for up to 3 degrees of misalignment between the shaft and housing components. The low friction inside the bearings will enable them to operate at higher speeds while generating much less heat than other bearings.
1. Outer ring
The outer ring of the bearing is a smooth spherical surface with no raceway. Due to the shape of the ring, the bearing can move slightly inside it, thereby adjusting for misalignment.
2. Inner circle
The inner ring of the self-aligning bearing consists of 2 raceways, which fix the ball and cage.
3. Rolling element and retainer
The retainer and inner ring fix the rolling elements of the self-aligning ball bearing in place. Due to the loose structure between the ball and the inner and outer rings, the friction force and frictional heat are both low. Usually, the cage is made of stamped steel, reinforced fiberglass, or machined brass.
4. Sealing
Self aligning sealed ball bearings can prevent dust and other pollutants from affecting rolling elements and lubricants. This greatly extends the service life of bearings, eliminates additional friction, and reduces maintenance costs and intervals.
*Advantages and disadvantages of self-aligning ball bearings
Ball bearings with self-aligning characteristics have many advantages compared to other types of bearings such as tapered bearings and deep groove ball bearings. However, the load-bearing capacity of self-aligning ball bearings is not as high as traditional ball bearings.
1. Advantages
(1) Misalignment
Self aligning ball bearings can offset up to
3 degree static and dynamic misalignment.
(2) Service life
Compared to other types of ball bearings, these bearings have high-speed performance and generate less heat and friction. This allows them to operate at lower temperatures and extend their lifespan while reducing maintenance.
(3) Light load performance
This type of bearing has low load requirements, which means they can perform well even under light loads.
(4) Low noise
Self aligning ball bearings generate low noise levels due to the loose fit between the rolling element and the outer ring. This makes them particularly suitable for household items such as fans.
2. Disadvantages
(1) Load type
The ball bearing on the self-aligning ball bearing is installed at a relatively straight angle between the inner and outer rings. This makes them suitable for handling radial loads rather than axial loads.
(2) Load capacity
Due to the small axial load contact point of the self-aligning ball bearing, it can withstand relatively small axial loads. If it is necessary to carry heavy loads, it is recommended to use self-aligning roller bearings with the same self-aligning characteristics.
3. Installation of self-aligning bearings
Tight sleeves are commonly used for installing self-aligning ball bearings.
To install these bearings correctly, please follow the following steps:
(1) Packaging with protective film can prevent external influences from interacting with components during transportation. Ensure to remove these films before installing the bearings.
(2) Apply engine oil or grease to the outer surface of the bearing.
(3) Use oil to lubricate the adapter.
(4) Slightly open the adapter and use the expander tool to slide it CZPT the shaft.
(5) After the adapter is in the correct position, place the bearing on the locking sleeve. To place the bearings in the correct position, if the shaft has threads, use nuts; If not, please use a bearing pusher kit or a small mallet.
(6) Ensure that the bearing can rotate on the outer ring after being in place. It should not be possible to rotate, but it should be possible to rotate freely.
(7) By removing the nut, placing the washer, and reinstalling the nut, lock the bearing in place with a locking washer.
Attention: If the locking sleeve is loose or not fully fixed in place, the inner ring of the locking sleeve will start to rotate. As a result, excessive friction may occur between these 3 components, leading to damage to the shaft, adapter, and bearings.
*Selection criteria for self-aligning bearings
The selection of self centering bearings is mainly based on the consideration of possible centering problems, as well as the application speed, load type, load size, tolerance, and bearing size.
1. Misalignment
Bearings with self-aligning ability are usually necessary.
When there may be misalignment of the shaft, self-aligning ball bearings are a good solution. Please remember that most self-aligning bearings can only handle misalignment of 3 degrees or less. Any deviation above this requires more customized bearings.
2. Speed
Compared to traditional bearings, self-aligning bearings can operate at higher speeds. For high-speed applications, self-aligning bearings are an excellent choice. However, lubrication and bearing size are also factors that affect speed. Therefore, it is also important to consider the speed, lubrication type, and load requirements of the machine. The operating speed of grease lubrication is slower than that of oil lubrication.
3. Load
Automatic self-aligning bearings are suitable for radial loads, but they are not suitable for axial loads due to their small contact angle. When choosing bearings, it is important to take this into consideration.
4. Sealing type and lubrication
If the bearings have open or shielded seals, lubrication procedures may be required. Otherwise, sealed bearings are usually pre lubricated.
5. Other
Select bearing size based on speed requirements, load type, load capacity, shaft size, and housing size.shaft size, and housing size.
| Model | Basic Dimensions (mm) | Basic Dynamic load rating (kn) | Rated Speed ( r/min) | ||||
| Inner Diameter | Outer Diameter | Width | Trends | static state | Reference speed | Limiting Speeds | |
| 1200 ETN9 | 10 | 30 | 9 | 5.53 | 1.18 | 56 000 | 36 000 |
| 1201 ETN9 | 12 | 32 | 10 | 6.24 | 1.43 | 50 000 | 32 000 |
| 1202 ETN9 | 15 | 35 | 11 | 7.41 | 1.76 | 45 000 | 28 000 |
| 1203 ETN9 | 17 | 40 | 12 | 8.84 | 2.2 | 38 000 | 24 000 |
| 1204 ETN9 | 20 | 47 | 14 | 12.7 | 3.4 | 32 000 | 20 000 |
| 1205 ETN9 | 25 | 52 | 15 | 14.3 | 4 | 28 000 | 18 000 |
| 1206 ETN9 | 30 | 62 | 16 | 15.6 | 4.65 | 24 000 | 15 000 |
| 1207 ETN9 | 35 | 72 | 17 | 19 | 6 | 20 000 | 13 000 |
| 1208 ETN9 | 40 | 80 | 18 | 19.9 | 6.95 | 18 000 | 11 000 |
| 1209 ETN9 | 45 | 85 | 19 | 22.9 | 7.8 | 17 000 | 11 000 |
| 1210 ETN9 | 50 | 90 | 20 | 26.5 | 9.15 | 16 000 | 10 000 |
| 1211 ETN9 | 55 | 100 | 21 | 27.6 | 10.6 | 14 000 | 9 000 |
| 1212 ETN9 | 60 | 110 | 22 | 31.2 | 12.2 | 12 000 | 8 000 |
| 1213 ETN9 | 65 | 120 | 23 | 35.1 | 14 | 11 000 | 7 000 |
| 1214 ETN9 | 70 | 125 | 24 | 35.8 | 14.6 | 11 000 | 7 000 |
FAQ
1.What is the minimum order quantity for this product?
Can be negotiated, we will try our best to meet customer needs.Our company is mainly based on wholesale sales, most customers’orders are more than Over 500 sets.
2.What is your latest delivery time?
Most orders will be shipped within 3-5 days of payment being received.
3.Does your company have quality assurance?
Yes, for 1 years.
4.Are you a factory or a trading company?
We have our own cooperative factory, and our business type is a combination of manufacturing and trading.
5.What is the competitiveness of your company’s products compared to other companies?
High precision, high speed, low noise.
6.What are the advantages of your company’s services compared to other companies?
Answer questions online 24 hours a day, reply in a timely manner, 100% after-sales service.
7.Which payment method does your company support?
Do our best to meet customer needs, Can be negotiated.
8.How to contact us quickly?
Please send us an inquiry or message and leave your other contact information, we will contact you as soon as possible and provide the detailed information you need.
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| Separated: | Separable |
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| Rows Number: | Double Column |
| Holder: | Non Metallic |
| Customization: |
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| Customized Request |
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about shipping cost and estimated delivery time. |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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How do innovations and advancements in self-aligning bearing technology impact their use?
Advancements and innovations in self-aligning bearing technology have a significant impact on their use in various industries. Here’s a detailed explanation:
- Improved Performance:
Innovations in self-aligning bearing technology often result in improved performance characteristics. These advancements can include:
- Load Capacity: New bearing designs and materials can enhance the load-carrying capacity of self-aligning bearings, allowing them to withstand higher loads or operate under more demanding conditions.
- Speed Capability: Advancements in bearing manufacturing techniques and materials can increase the maximum rotational speed at which self-aligning bearings can operate effectively, enabling their use in high-speed applications.
- Friction Reduction: Innovations in bearing design, lubrication, and surface treatments contribute to reducing friction and energy losses, resulting in improved efficiency and reduced operating costs.
- Sealing and Contamination Resistance: New sealing technologies and materials can enhance the sealing performance of self-aligning bearings, providing better protection against contaminants, moisture, and harsh environmental conditions.
- Temperature and Corrosion Resistance: Advances in bearing materials and coatings enable self-aligning bearings to withstand extreme temperatures, aggressive chemicals, and corrosive environments, expanding their range of applications.
- Extended Service Life:
Innovations in self-aligning bearing technology often result in improved durability and longevity. These advancements can include:
- Materials: The development of new bearing materials, such as advanced steels, ceramics, or composites, can significantly enhance the bearing’s resistance to wear, fatigue, and surface damage, leading to extended service life.
- Lubrication: Advancements in lubrication technologies, such as the use of solid lubricants or advanced grease formulations, can provide better film formation, reduce friction, and minimize wear, thereby increasing the bearing’s operating life.
- Surface Treatments: Innovative surface treatments, such as coatings or finishes, can improve the bearing’s resistance to corrosion, wear, and fretting, contributing to longer service intervals and reduced maintenance requirements.
- Condition Monitoring: The integration of sensor technologies and data analytics in self-aligning bearings enables real-time monitoring of operating conditions, allowing for proactive maintenance and early detection of potential failures, thus maximizing the bearing’s service life.
- Application Expansion:
Advancements in self-aligning bearing technology often lead to an expansion of their application range. These advancements can include:
- New Industries: Innovations in self-aligning bearing technology can enable their use in industries or applications where they were previously not feasible. This opens up opportunities in emerging sectors, such as renewable energy, electric vehicles, robotics, or medical devices.
- Challenging Environments: Improved performance characteristics, such as enhanced sealing, temperature resistance, or contamination resistance, allow self-aligning bearings to be deployed in challenging environments, including offshore installations, high-temperature processes, or chemically aggressive applications.
- Specialized Applications: Advancements in self-aligning bearing technology can lead to the development of specialized bearing variants tailored for specific applications, such as high-speed machining, precision equipment, or demanding industrial automation systems.
Overall, innovations and advancements in self-aligning bearing technology bring about enhanced performance, extended service life, and expanded application possibilities. These advancements drive improvements in industrial productivity, reliability, and efficiency, making self-aligning bearings a valuable component in a wide range of industries and applications.
Can you explain the installation and alignment considerations for self-aligning bearings?
Proper installation and alignment are crucial for the optimal performance and longevity of self-aligning bearings. Here’s a detailed explanation of the installation and alignment considerations:
- Pre-Installation Preparation:
Prior to the installation of self-aligning bearings, it is essential to ensure a clean and suitable working environment. Here are some key considerations:
- Cleanliness: The work area should be clean and free from dust, dirt, and contaminants to prevent the ingress of foreign particles during the installation process.
- Tools and Equipment: Prepare the necessary tools and equipment required for the installation, including suitable lifting devices, torque wrenches, and lubrication apparatus.
- Inspection: Thoroughly inspect the bearing and its components for any signs of damage or defects. Replace any worn or damaged parts before proceeding with the installation.
- Lubrication: Apply the recommended lubricant to the bearing and ensure that it is properly distributed before installation. Lubrication helps reduce friction, prevent excessive wear, and facilitate smooth operation.
- Mounting Considerations:
When mounting self-aligning bearings, it is important to follow certain guidelines to ensure proper fit and alignment:
- Shaft and Housing Tolerances: Check the shaft and housing tolerances to ensure they comply with the specifications provided by the bearing manufacturer. Proper tolerances help achieve the correct fit and prevent excessive clearance or interference.
- Shaft and Housing Preparation: Clean the shaft and housing surfaces and remove any burrs or rough edges that could interfere with the bearing’s seating. Ensure that the shaft and housing are machined to the recommended tolerances and finishes.
- Mounting Method: There are various methods for mounting self-aligning bearings, including press fitting, thermal expansion, and hydraulic mounting. Follow the manufacturer’s instructions and recommended mounting method to ensure a secure and accurate fit.
- Sealing: If the self-aligning bearing has integral seals or shields, ensure that they are correctly positioned and aligned during installation. Proper sealing helps protect the bearing against contaminants and extends its service life.
- Tightening: When tightening the bearing onto the shaft or in the housing, use the recommended torque values provided by the manufacturer. Over-tightening can lead to excessive preload or damage, while under-tightening can result in insufficient seating and compromised performance.
- Alignment Considerations:
Proper alignment is crucial for self-aligning bearings to function optimally. Here are some alignment considerations:
- Angular Misalignment: Self-aligning bearings can accommodate angular misalignment to a certain degree. However, it is important to keep the misalignment within the manufacturer’s specified limits to prevent excessive stress and premature wear.
- Shaft Deflection: Consider the potential shaft deflection that may occur during operation and ensure that the self-aligning bearing can handle the expected deflection without exceeding its capacity. This may involve selecting a bearing with appropriate load-carrying capacity and considering additional support or stabilization measures.
- Alignment Verification: After installation, verify the alignment of the self-aligning bearing by measuring the axial and radial runout using appropriate alignment tools. Adjust the positioning if necessary to achieve the desired alignment within the specified tolerances.
By following these installation and alignment considerations, you can ensure the proper fit, alignment, and performance of self-aligning bearings. Adhering to the manufacturer’s guidelines and best practices helps maximize the lifespan and reliability of the bearings in various applications.
Can you explain the advantages and unique features of self-aligning bearings?
Self-aligning bearings offer several advantages and unique features that make them suitable for a wide range of applications. Here’s a detailed explanation of the advantages and unique features of self-aligning bearings:
- Misalignment Compensation:
One of the primary advantages of self-aligning bearings is their ability to accommodate misalignment between the shaft and the housing. This includes angular misalignment, axial misalignment, and shaft deflection. The self-aligning design allows the bearing to adjust its position and compensate for these misalignments, ensuring smooth operation and reducing stress on the bearing components.
- Reduced Friction and Wear:
Self-aligning bearings help reduce friction and wear in machinery. By accommodating misalignment, they distribute the load more evenly across the rolling elements and raceways, minimizing localized stresses. This results in lower friction, reduced wear, and longer bearing life. Additionally, the self-aligning capability helps prevent excessive heat generation, which can further contribute to reduced friction and wear.
- Shock and Vibration Absorption:
Self-aligning bearings have the unique ability to absorb shocks and vibrations that occur during operation. The spherical outer ring raceway allows the bearing to move and adjust its position, effectively dampening the impact of shocks and vibrations. This helps improve the overall stability of the machinery, reduces the transmission of vibrations, and protects other components from excessive forces.
- Easy Installation and Maintenance:
Self-aligning bearings are relatively easy to install and maintain. During installation, their self-aligning capability simplifies the alignment process, as slight misalignments can be accommodated. This saves time and effort in achieving precise alignment. Additionally, self-aligning bearings are typically designed for easy maintenance, allowing for straightforward tasks such as re-greasing or replacement without requiring complex disassembly.
- Wide Application Range:
Self-aligning bearings are versatile and find applications in various industries and machinery. They are commonly used in applications where misalignment is expected, such as in heavy machinery, conveyor systems, agricultural equipment, and mining operations. The ability to accommodate misalignment makes self-aligning bearings suitable for challenging environments and dynamic operating conditions.
- Cost-Effective Solution:
Self-aligning bearings offer a cost-effective solution in many applications. Their ability to compensate for misalignment helps prevent premature failure and reduces the need for frequent maintenance or realignment. This can result in cost savings by extending the bearing’s service life, improving overall machinery reliability, and reducing downtime for repairs or replacements.
In summary, self-aligning bearings provide advantages such as misalignment compensation, reduced friction and wear, shock and vibration absorption, easy installation and maintenance, wide application range, and cost-effectiveness. These unique features make them a valuable choice for various industries and applications where misalignment and dynamic operating conditions are present.
editor by CX 2024-04-30
