Product Description
Low Noise High Precision Self-Aligning Roller Bearing Ball Chrome Steel Bearing
Product Description
Self Aligning Ball Bearings
Self aligning ball bearings have 2 rows of balls, a common sphered raceway in the outer ring and 2 deep uninterrupted raceway grooves in the inner ring. Self aligning ball bearings are insensitive to angular misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection or housing deformations. Self aligning ball bearings are suitable for applications where the shaft relative to the housing bore is prone to angular misalignments. Under normal loads, depending on the dimensional series, the maximum permissible angular misalignment is approximately 2° to 4°. These bearings are available in open and sealed versions and inner rings with a cylindrical or tapered bore.
Product Parameters
| Bearing NO. | Principal dimensions | Speed ratings(r/min) | Basic load ratings | ||||
| d | D | B / C / T | Grease | Oil | (kN) | (kN) | |
| Dynamic | Static | ||||||
| 2208 | 40 | 80 | 23 | 7500 | 9000 | 22.5 | 7.38 |
| 2208K | 40 | 80 | 23 | 7500 | 9000 | 22.5 | 7.38 |
| 2209 | 45 | 85 | 23 | 7100 | 8500 | 23.2 | 8 |
| 2209K | 45 | 85 | 23 | 7100 | 8500 | 23.2 | 8 |
| 2210 | 50 | 90 | 23 | 6300 | 8000 | 23.2 | 8.45 |
| 2210K | 50 | 90 | 23 | 6300 | 8000 | 23.2 | 8.45 |
| 2211 | 55 | 100 | 25 | 6000 | 7100 | 26.8 | 9.95 |
| 2211K | 55 | 100 | 25 | 6000 | 7100 | 26.8 | 9.95 |
| 2212 | 60 | 110 | 28 | 5300 | 6300 | 34 | 12.5 |
| 2212K | 60 | 110 | 28 | 5300 | 6300 | 34 | 12.5 |
| 2213 | 65 | 120 | 31 | 4800 | 6000 | 43.5 | 16.2 |
| 2213K | 65 | 120 | 31 | 4800 | 6000 | 43.5 | 16.2 |
| 2214 | 70 | 125 | 31 | 4500 | 5600 | 44 | 17 |
| 2214K | 70 | 125 | 31 | 4500 | 5600 | 44 | 17 |
| 2215 | 75 | 130 | 31 | 4300 | 5300 | 44.2 | 18 |
| 2215K | 75 | 130 | 31 | 4300 | 5300 | 44.2 | 18 |
| 2304 | 20 | 52 | 21 | 11000 | 14000 | 17.8 | 4.75 |
| 2304K | 20 | 52 | 21 | 11000 | 14000 | 17.8 | 4.75 |
| 2305 | 25 | 62 | 24 | 9500 | 12000 | 24.5 | 6.48 |
| 2305K | 25 | 62 | 24 | 9500 | 12000 | 24.5 | 6.48 |
| 2306 | 30 | 72 | 27 | 8000 | 10000 | 31.5 | 8.68 |
| 2306K | 30 | 72 | 27 | 8000 | 10000 | 31.5 | 8.68 |
| 2307 | 35 | 80 | 31 | 7100 | 9000 | 39.2 | 11 |
| 2307K | 35 | 80 | 31 | 7100 | 9000 | 39.2 | 11 |
| 2308 | 40 | 90 | 33 | 6300 | 8000 | 44.8 | 13.2 |
| 2308K | 40 | 90 | 33 | 6300 | 8000 | 44.8 | 13.2 |
| 2309 | 45 | 100 | 36 | 5600 | 7100 | 55 | 16.2 |
| 2309K | 45 | 100 | 36 | 5600 | 7100 | 55 | 16.2 |
| 2310 | 50 | 110 | 40 | 5000 | 6300 | 64.5 | 19.8 |
| 2310K | 50 | 110 | 40 | 5000 | 6300 | 64.5 | 19.8 |
Detailed Photos
Company Profile
HangZhou HONGSHI MACHINERY AND ELECTRICAL EQUIPMENT CO.,LTD. (formerly HangZhou Hengmai Bearing Co., Ltd.) was established in 2007, and HMMH is our own brand.
HMMH mainly produces spherical roller bearings, pillow block ball bearing, deep groove ball bearings and cylindrical roller bearings. Spherical roller bearing products range from 20mm to 1M, with the main production of crusher bearings 22300 series. Low noise deep groove ball bearings, product accuracy can reach ZV2, ZV3, ZV4, mainly produces motor bearings 6200, 6300 series. pillow block ball bearing, mainly producing UCP, UCF, UCFL, UCFC, UCT series, the products are mainly used in agricultural machine and peeling machine. We also use the bainite quenching process to ensure the hardness of the bearing, using good testing equipment, such as roundness meter, profiler, roughness meter, universal measuring instrument, spectrometer, metallographic microscope to control each detail quality monitoring.
To ensure product quality, we have established a strict quality control system and an experienced team of engineers and after-sales service. From forgings to final products we have a strict quality control system.
Your needs are our production motivation, and your satisfaction is our goal. We are willing to serve our customers with the goal of “Quality First, Service First, Credit First”.
FAQ
1.A:How can I do customized design?
Q:We are request for the drawing with the measurement, material and other speicifcation as details as you can, and for the customized products, our MOQ is 10 pcs per design
2.Q: How can I get a sample?
A: If you only need 1or 2 samples for small size inner weight below 2kgs, we can supply free samples and we have stocks, you can just pay the shipping cost .if you need several design samples, then you should paid the cost with shipping.
3.Q: What package do you usually use?
A: Usually we use single box or tape. Also according to customer’s special requirement.
4.Q:How long do you need for production? Or what’s your production lead time?
A:Usually could be sent our in 2-3 days if in stock for samples. Customized item usually need 14-30 days to produce.
5.Q:How long will you guarantee your quality?
A:We supply test report and quality control photos from materials to finished goods during production.
6.Q:How to do after sale service?
A:Good after-sale service is our promise. Before placing orders, our professional engineer will discuss all technical data and your bearing usage condition and CZPT you what kind of steel materials to fit your products and usage life possible.
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| Product Name: | Self-Aligning Roller Bearing |
|---|---|
| Quality: | High Quality |
| Rolling Body: | Roller Bearings |
| Contact Angle: | Normal |
| Material: | Bearing Steel |
| Spherical: | Aligning Bearings |
| Customization: |
Available
| Customized Request |
|---|
Can you describe the various types of seals and shields used with self-aligning bearings for contamination prevention?
Yes, here’s a detailed description of the various types of seals and shields used with self-aligning bearings for contamination prevention:
- Contact Seals:
Contact seals, also known as lip seals or radial seals, are commonly used with self-aligning bearings to prevent the ingress of contaminants. These seals feature a flexible lip that makes contact with the inner ring of the bearing, creating a barrier against dust, dirt, water, and other external substances. Contact seals provide effective contamination prevention but may introduce slightly higher friction due to the contact between the seal lip and the bearing surface. They are typically made of rubber or synthetic materials and offer good sealing performance in most operating conditions.
- Felt Seals:
Felt seals are simple and cost-effective sealing solutions used with self-aligning bearings. They consist of a felt material that is compressed against the bearing inner ring or housing to create a barrier against contaminants. Felt seals are commonly used in applications with low to moderate speeds and light contamination levels. While they offer basic protection against solid particles, they may not provide effective sealing against liquids or fine particles.
- Metallic Shields:
Metallic shields, also known as metal shields or non-contact shields, are used to protect self-aligning bearings from solid contaminants such as dust and dirt. These shields are typically made of steel or other metals and are designed to fit closely to the bearing inner ring without making contact. Metallic shields provide effective protection while minimizing friction and heat generation. They are suitable for high-speed applications where low torque and minimal drag are desired.
- Rubber Shields:
Rubber shields, also known as non-contact seals or labyrinth seals, consist of a rubber or elastomeric material that forms a barrier around the bearing without making direct contact. Rubber shields are designed with a labyrinth-like structure that uses multiple barriers to prevent the entry of contaminants. These shields provide effective sealing against both solid particles and liquids while still allowing for low-friction operation. Rubber shields are commonly used in applications where low torque, minimal drag, and enhanced contamination protection are required.
- Hybrid Seals:
Hybrid seals combine the advantages of different sealing technologies to provide optimal contamination prevention. These seals may incorporate a combination of contact seals, non-contact shields, or additional features such as flingers or slingers. Hybrid seals are designed to provide enhanced protection against a wide range of contaminants while minimizing friction and maintaining low torque. They are often used in demanding applications where a high level of sealing performance is required.
- Additional Features:
In addition to the primary seals and shields mentioned above, some self-aligning bearings may incorporate additional features to enhance contamination prevention. These features include flingers, which are rotating discs or rings that help to deflect contaminants away from the bearing; slingers, which are similar to flingers but operate by centrifugal force; and specialized coatings or surface treatments that provide enhanced resistance to corrosion or chemical attack.
It’s important to consult the bearing manufacturer’s specifications and guidelines to select the appropriate type of seal or shield for a specific self-aligning bearing and its operating conditions. By choosing the right sealing solution, engineers can effectively prevent contamination and prolong the service life of self-aligning bearings in various applications.
What are the potential challenges or limitations associated with using self-aligning bearings in specific industries?
While self-aligning bearings offer many advantages, there are some potential challenges and limitations associated with their use in specific industries. Here’s a detailed explanation of these considerations:
- Load Capacity:
While self-aligning bearings are designed to handle high loads, there are limits to their load-carrying capacity. In industries with extremely heavy or shock loads, such as heavy machinery, mining, or construction, the load demands may exceed the capabilities of self-aligning bearings. In such cases, alternative bearing designs or additional support mechanisms may be required to handle the extreme load conditions.
- Speed Limitations:
Self-aligning bearings may have certain speed limitations due to factors such as centrifugal forces, increased friction, or potential instability at high rotational speeds. In industries that require very high-speed applications, such as aerospace or certain manufacturing processes, specialized high-speed bearings may be more suitable to ensure optimal performance and prevent premature failure.
- Temperature and Environmental Constraints:
Self-aligning bearings have specific temperature and environmental constraints that can impact their performance. In industries involving extreme temperatures, aggressive chemicals, or harsh environmental conditions, the choice of bearing materials and lubricants becomes critical. Certain industries, such as oil and gas, chemical processing, or marine applications, may require specialized bearing designs or coatings to withstand the demanding operating conditions.
- Maintenance and Lubrication:
Proper maintenance and lubrication are essential for the reliable operation of self-aligning bearings. In industries where access for maintenance is challenging or where frequent maintenance is not feasible, the longevity and performance of self-aligning bearings may be compromised. Additionally, industries with high contamination or abrasive particles in the operating environment may require more frequent lubrication or specialized sealing arrangements to protect the bearings from premature wear and failure.
- Space Limitations:
Self-aligning bearings have a larger footprint compared to some other bearing designs due to their double-row construction and spherical outer ring raceway. In industries with space constraints or compact machinery designs, the dimensions of self-aligning bearings may pose challenges in terms of integration or fitting within limited spaces. In such cases, alternative bearing designs with smaller profiles may be more suitable.
- Cost Considerations:
Self-aligning bearings can be more expensive compared to certain other bearing types, especially in applications that require larger sizes or specialized configurations. In industries with cost-sensitive considerations, such as consumer products or automotive manufacturing, the higher cost of self-aligning bearings may influence the selection of alternative bearing options that can meet the application requirements at a lower cost.
While self-aligning bearings offer numerous benefits, it is important to carefully evaluate the specific challenges and limitations in each industry or application. By considering these factors and consulting with bearing experts or manufacturers, the most suitable bearing solution can be selected to ensure optimal performance, reliability, and cost-effectiveness.
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 2024-04-25
