Product Description
| Rows Number | Single | Load Direction | Radial Bearing |
| Material | Bearing Steel | Precision Rating | PO P6 P5 P4 P2 |
| Clearance | CO C1 C2 C3 C4 | Lubrication | Oil Lubrication |
| OEM | Available | Hardness | 59-63HRC |
| Feature | High Speed,Long Life | Transport Package | Single Box |
| Specification | standard | Trademark | Packing |
| Production Capacity | 1500,000 Pieces/Year |
The outer spherical ball bearing is actually a variant of the deep groove ball bearing. Its characteristic is that its outer ring outer diameter surface is a spherical surface, which can be fitted into the corresponding concave spherical surface of the bearing seat to play the role of centering. The outer spherical bearing is mainly used to bear the combined radial and axial load based on the radial load, and it is generally not suitable to bear the axial load alone.
| UC200 series | ||||||||||||
| Bearing type | Dimensions(mm) | Weight(KG) | basic load capacity(KN) | Limt speed(r/min) | ||||||||
| d | D | B | C | S | G | H | ds | dynamic | static | |||
| UC201 | 12 | 40 | 27.4 | 14 | 11.5 | 4.5 | 4 | M*0.75 | 0.12 | 7.36 | 4.48 | 4000 |
| UC202 | 15 | 40 | 27.4 | 14 | 11.5 | 4.5 | 4 | M*0.75 | 0.11 | 7.36 | 4.48 | 4000 |
| UC203 | 17 | 40 | 27.4 | 14 | 11.5 | 4.5 | 4 | M*0.75 | 0.1 | 7.36 | 4.48 | 4000 |
| UC204 | 20 | 47 | 31 | 17 | 12.7 | 4.7 | 4.5 | M6*1.0 | 0.16 | 9.88 | 6.2 | 4000 |
| UC205 | 25 | 52 | 34.1 | 17 | 14.3 | 5.5 | 4.7 | M6*1.0 | 0.19 | 10.78 | 6.98 | 3400 |
| UC206 | 30 | 62 | 38.1 | 19 | 15.9 | 6 | 4.5 | M6*1.0 | 0.31 | 14.97 | 10.04 | 2800 |
| UC207 | 35 | 72 | 42.9 | 20 | 17.5 | 6.5 | 5.1 | M8*1.0 | 0.48 | 19.75 | 13.67 | 2400 |
| UC208 | 40 | 80 | 49.2 | 21 | 19 | 8 | 5.8 | M8*1.0 | 0.62 | 22.71 | 15.94 | 2200 |
| UC209 | 45 | 85 | 49.2 | 22 | 19 | 8 | 6.2 | M8*1.0 | 0.67 | 24.36 | 17.71 | 1900 |
| UC210 | 50 | 90 | 51.6 | 23 | 19 | 9 | 6.5 | M10*1.0 | 0.78 | 26.98 | 19.84 | 1800 |
| UC211 | 55 | 100 | 55.6 | 25 | 22.2 | 9 | 7.3 | M10*1.0 | 1.03 | 33.37 | 25.11 | 1600 |
| UC212 | 60 | 110 | 65.1 | 27 | 25.4 | 11 | 7.7 | M10*1.0 | 1.45 | 36.74 | 27.97 | 1500 |
| UC213 | 65 | 120 | 65.1 | 28 | 25.4 | 12 | 8.3 | M10*1.0 | 1.71 | 44.01 | 34.18 | 1400 |
| UC214 | 70 | 125 | 74.6 | 30 | 30.2 | 12 | 8.7 | M12*1.25 | 2.06 | 46.79 | 37.59 | 1300 |
| UC215 | 75 | 130 | 77.8 | 30 | 33.3 | 12 | 9.2 | M12*1.25 | 2.22 | 50.85 | 41.26 | 1200 |
| UC216 | 80 | 140 | 82.6 | 33 | 33.3 | 14 | 9.6 | M12*1.25 | 2.8 | 55.04 | 45.09 | 1100 |
| UC217 | 85 | 150 | 85.7 | 36 | 34.1 | 14 | 10.5 | M12*1.25 | 3.48 | 64.01 | 53.28 | 1000 |
| UC218 | 90 | 160 | 96 | 37 | 39.7 | 14 | 11.1 | M12*1.25 | 4.3 | 73.83 | 60.76 | 950 |
| UC 300series | ||||||||||||
| Bearing type | Dimensions(mm) | Weight(KG) | basic load capacity(KN) | Limt speed(r/min) | ||||||||
| d | D | B | C | S | G | H | ds | dynamic | static | |||
| UC305 | 25 | 62 | 38 | 21 | 15 | 6 | 6.1 | M6*1 | 0.35 | 17.22 | 11.39 | 2800 |
| UC306 | 30 | 72 | 43 | 23 | 17 | 6 | 6.7 | M8*1 | 0.56 | 20.77 | 14.17 | 2600 |
| UC307 | 35 | 80 | 48 | 25 | 19 | 8 | 7.4 | M8*1 | 0.71 | 25.66 | 17.92 | 2200 |
| UC308 | 40 | 90 | 52 | 27 | 22 | 10 | 8.2 | M10*1 | 0.96 | 31.35 | 22.38 | 2000 |
| UC309 | 45 | 100 | 57 | 30 | 22 | 10 | 9 | M10*1 | 1.28 | 40.66 | 30 | 1800 |
| UC310 | 50 | 110 | 61 | 32 | 25 | 12 | 10 | M12*1.25 | 1.65 | 47.58 | 35.71 | 1700 |
| UC311 | 55 | 120 | 66 | 34 | 26 | 12 | 10.7 | M12*1.25 | 1.9 | 55.05 | 41.91 | 1400 |
| UC312 | 60 | 130 | 71 | 36 | 30 | 12 | 11.5 | M12*1.25 | 2.6 | 62.88 | 48.6 | 1300 |
| UC313 | 65 | 140 | 75 | 38 | 33 | 12 | 12.2 | M12*1.25 | 3.15 | 72.21 | 56.68 | 1200 |
| UC314 | 70 | 150 | 78 | 40 | 33 | 14 | 13 | M12*1.25 | 3.83 | 80.1 | 63.48 | 1100 |
| UC315 | 75 | 160 | 82 | 42 | 33 | 14 | 13.8 | M14*1.5 | 4.59 | 87.25 | 71.68 | 1000 |
| UC316 | 80 | 170 | 86 | 44 | 34 | 14 | 14.5 | M16*1.5 | 5.3 | 94.57 | 80.35 | 1000 |
| UC317 | 85 | 180 | 96 | 46 | 40 | 16 | 15 | M16*1.5 | 6.58 | 102.25 | 89.52 | 9050 |
| UC318 | 90 | 190 | 96 | 48 | 40 | 16 | 15.9 | M16*1.5 | 7.5 | 110.81 | 100.76 | 900 |
| UC319 | 95 | 200 | 103 | 50 | 41 | 16 | 16.7 | M16*1.5 | 8.7 | 120.51 | 113.75 | 850 |
| UC320 | 100 | 215 | 108 | 54 | 42 | 18 | 18 | M16*1.5 | 10.8 | 133.06 | 131.18 | 800 |
| Deep groove ball bearing | ||||
| Bearing type | Dimensions(mm) | Weight(kg) | ||
| Inner diameter | Outer diameter | breadth | ||
| 16001 | 12 | 28 | 7 | 0.019 |
| 16002 | 15 | 32 | 8 | 0.571 |
| 16003 | 17 | 35 | 8 | 0.033 |
| 16004 | 20 | 42 | 8 | 0.048 |
| 16005 | 25 | 47 | 8 | 0.059 |
| 16006 | 30 | 55 | 9 | 0.087 |
| 16007 | 35 | 62 | 99 | 0.107 |
| 16008 | 40 | 68 | 10 | 0.13 |
| 16009 | 45 | 75 | 10 | 0.167 |
| 16571 | 50 | 80 | 11 | 0.175 |
| 16011 | 55 | 90 | 11 | 0.257 |
| 16012 | 60 | 95 | 11 | 0.281 |
| 16013 | 65 | 100 | 13 | 0.3 |
| 16014 | 70 | 110 | 13 | 0.437 |
| 16015 | 75 | 115 | 14 | 0.463 |
| 16016 | 80 | 125 | 14 | 0.621 |
| 16017 | 85 | 130 | 16 | 0.652 |
| 16018 | 90 | 140 | 16 | 0.87 |
| 16019 | 95 | 145 | 16 | 0.904 |
| Bearing type | Dimensions(mm) | Weight(kg) | ||
| Inner diameter | Outer diameter | breadth | ||
| 16571 | 100 | 150 | 8 | 0.945 |
| 6000 | 10 | 26 | 8 | 0.018 |
| 6001 | 12 | 28 | 9 | 0.571 |
| 6002 | 15 | 32 | 10 | 0.031 |
| 6003 | 17 | 35 | 12 | 0.041 |
| 6004 | 20 | 42 | 12 | 0.068 |
| 6005 | 25 | 47 | 13 | 0.079 |
| 6006 | 30 | 55 | 14 | 0.116 |
| 6007 | 35 | 62 | 15 | 0.151 |
| 6008 | 40 | 68 | 16 | 0.19 |
| 6009 | 45 | 75 | 16 | 0.241 |
| 6571 | 50 | 80 | 18 | 0.261 |
| 6011 | 55 | 90 | 18 | 0.381 |
| 6012 | 60 | 95 | 18 | 0.412 |
| 6013 | 65 | 100 | 20 | 0.439 |
| 6014 | 70 | 110 | 20 | 0.608 |
| 6015 | 75 | 115 | 22 | 0.649 |
| 6016 | 80 | 125 | 22 | 0.872 |
| 6017 | 85 | 130 | 24 | 0.918 |
| 6018 | 90 | 140 | 24 | 1.19 |
More series of deep groove ball bearing
6300 series deep groove ball bearing
6220 series deep groove ball bearing
Production Line
HangZhou Siruibo Bearing Technology Co., Ltd. is a company mainly engaged in manufacturing and selling outer spherical bearings. The registered capital is Five million.
Since its establishment 20 years ago, the company is committed to Mounted Bearing Unit (maintenance-free bearings, engraving machine bearings, holding machine shaft Bearing, no-tillage machine bearing, fan bearing, high temperature bearing, zinc alloy bearing, food grade bearing unit) research and development. With the most complete varieties and best advanced manufacturing technology in production of Mounted Bearing Unit, to be a reliable enterprises, we welcome your cooperation. Currently, our company produce 10 series of more than 260 varieties of outer spherical bearings and 13 different structural categories of outer spherical bearing special seats, all adopted International standard design and manufacturing. Registered trademark “FOS” .
Through the efforts and unremitting pursuit of all employees of the company, all products accepted by international standards. Over the years of Expansion and technical transformation, we developed into a Mounted Bearing Unit with large scale of professional manufacturers, for the bearing industry in China, has made a contribution to the development of Bearing.
HangZhou Siruibo Bearing Technology Co., Ltd. has a production capacity of 1 million sets/year, with an annual output value of 30 million yuan. We produce 30 varieties monthly , with 45-60 days lead time.
The company has a perfect material and product quality inspection equipment, according to the strict scientific Quality assurance system, to prove satisfactory to our customers. Our products widely used in agricultural Industry machinery, textile machinery and light industry, chemical industry, metallurgy, printing, food, transportation, coal, packaging and other industries and the introduction of machinery .Our products have exported to Europe, America and many countries and regions in South east Asia.
Exhibitions
About us:
We are 1 manufactuer of bearing for more than 20 years.
Give us a chance, we will cooperate with our passion.
Our professional, reliable, experienced products and service can meet your request.
Why choose us?
SAMPLES
1. Samples quantity: 1-10 PCS are available.
2. Free samples: It depends on the Model No., material and quantity. Some of the bearings samples need client to pay samples charge and shipping cost.
3. It’s better to start your order with Trade Assurance to get full protection for your samples order.
CUSTOMIZED
The customized LOGO or drawing is acceptable for us.
MOQ
1. MOQ: 10 PCS mix different standard bearings.
2. MOQ: 3000 PCS customized your brand bearings.
OEM POLICY
1. We can printing your brand (logo, artwork)on the shield or laser engraving your brand on the shield.
2. We can custom your packaging according to your design
3. All copyright own by clients and we promised don’t disclose any info.
SUPORT
Please visit our bearings website, we strongly encourge that you can communicate with us through email, thanks!
We have all kinds of bearings, just tell me your item number and quantity, best price will be offered to you soon
The material of the bearings, precision rating, seals type, OEM service, etc, all of them we can make according to your requirement.
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Rolling Body: | Ball Bearings |
|---|---|
| The Number of Rows: | Single |
| Outer Dimension: | Small (28-55mm) |
| Material: | Bearing Steel |
| Spherical: | Non-Aligning Bearings |
| Load Direction: | Radial Bearing |
| Samples: |
US$ 1/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|

What is the temperature tolerance of UCP bearings?
The temperature tolerance of UCP bearings, also known as pillow block bearings, can vary depending on several factors, including the bearing materials, lubrication, and seal design. Here’s a detailed explanation of the temperature tolerance of UCP bearings:
1. Bearing Materials: The materials used in the construction of UCP bearings play a significant role in determining their temperature tolerance. Common materials for UCP bearings include chrome steel, stainless steel, and cast iron. Chrome steel bearings typically have a higher temperature tolerance compared to stainless steel or cast iron bearings. Specialty materials such as heat-resistant alloys or ceramics may be used for UCP bearings intended for extremely high-temperature applications.
2. Lubrication: Proper lubrication is crucial for maintaining the temperature tolerance of UCP bearings. Lubricants help reduce friction, dissipate heat, and protect bearing surfaces. The choice of lubricant depends on the operating temperature range. Standard greases and oils are suitable for moderate temperature applications. For higher temperatures, synthetic lubricants or specialty high-temperature greases may be recommended to ensure adequate lubrication and thermal stability.
3. Seal Design: The seal design of UCP bearings can affect their temperature tolerance. Seals help prevent contaminants from entering the bearing and retain the lubricant. Different seal materials and designs have varying temperature limits. Common seal materials include rubber, metal, or felt. High-temperature seals or shields may be used to enhance the temperature tolerance of UCP bearings in demanding applications.
Generally, UCP bearings can handle a wide range of temperatures. Standard UCP bearings typically have a temperature range of -20°C to +120°C (-4°F to +248°F). However, it’s important to note that these temperature limits are approximate and can vary depending on the specific bearing design, materials, lubrication, and operating conditions.
For applications with higher temperature requirements, specialized high-temperature UCP bearings are available. These bearings are designed to withstand elevated temperatures and may have temperature limits ranging from 150°C to 350°C (302°F to 662°F) or even higher, depending on the specific design and materials used.
It’s crucial to consult the manufacturer’s documentation, specifications, or technical support to determine the exact temperature tolerance of a specific UCP bearing model. Proper selection and application of UCP bearings within their temperature limits help ensure reliable performance, prevent premature wear or failure, and contribute to the longevity of the bearing and the machinery it supports.

How to replace a UCP bearing?
Replacing a UCP bearing, also known as a pillow block bearing, requires careful handling and following specific steps to ensure a successful replacement. Here’s a detailed explanation of the process to replace a UCP bearing:
- Gather the necessary tools: Before starting the replacement, gather the tools you will need, including a wrench or socket set, a puller or press (if needed), cleaning materials, and the replacement UCP bearing.
- Prepare the work area: Ensure that the work area is clean and well-lit. If the machinery is still operational, shut it down and follow proper lockout/tagout procedures to prevent accidental startup during the replacement process.
- Remove any obstructions: If there are any covers, guards, or other components obstructing access to the UCP bearing, remove them carefully to expose the bearing housing.
- Loosen the locking mechanism: Use a wrench or socket set to loosen the locking mechanism that secures the UCP bearing in place. This could be a set screw, collar, or other locking device. Follow the manufacturer’s instructions to identify and release the locking mechanism.
- Remove the UCP bearing: Once the locking mechanism is loosened, the UCP bearing can be removed from the housing. Apply gentle force if necessary, but avoid excessive impacts or prying that may damage the bearing or the housing.
- Clean the housing: Thoroughly clean the housing to remove any dirt, debris, or old lubricant. Use appropriate cleaning materials and ensure that the housing is dry before installing the new UCP bearing.
- Inspect and prepare the replacement bearing: Before installing the new UCP bearing, inspect it for any signs of damage or defects. Ensure that the bore and outer surfaces are clean and free from any contaminants. If necessary, apply a suitable lubricant to the bearing per the manufacturer’s recommendations.
- Install the new UCP bearing: Carefully position the new UCP bearing into the housing, aligning the bore with the shaft. Apply even pressure to press the bearing into place, ensuring it is seated securely. Follow the manufacturer’s instructions for any specific installation requirements, such as tightening torque for the locking mechanism.
- Secure the locking mechanism: Once the new UCP bearing is installed, tighten the locking mechanism to secure it in place. Again, follow the manufacturer’s instructions for the specific tightening procedure and torque value.
- Reinstall any obstructions: Put back any covers, guards, or components that were removed earlier to restore the machinery to its original configuration.
- Test and verify: After the replacement is complete, test the machinery to ensure proper operation of the new UCP bearing. Monitor for any unusual noise, vibration, or other issues that may indicate incorrect installation or other problems.
It’s important to note that the specific steps for replacing a UCP bearing may vary depending on the machinery and the manufacturer’s recommendations. Always refer to the manufacturer’s documentation, maintenance manuals, or technical support for the most accurate and detailed instructions for your specific UCP bearing and machinery.
Additionally, if you are unsure or uncomfortable with performing the replacement yourself, it’s recommended to seek the assistance of a qualified technician or maintenance professional to ensure the proper installation and functioning of the UCP bearing.

What is a UCP bearing?
A UCP bearing, also known as a pillow block bearing, is a type of mounted bearing commonly used in various industrial applications. It is designed to provide support and facilitate rotational or linear motion in machinery and equipment. Here’s a detailed explanation:
A UCP bearing consists of a bearing unit and a housing. The bearing unit typically includes a rolling element bearing, such as a ball bearing or a roller bearing, which enables smooth and low-friction motion. The housing, often made of cast iron or pressed steel, serves as a support structure for the bearing unit and provides protection against contaminants and external elements.
The term “UCP” stands for “Unit with Cast Iron Pillow Block,” referring to the common use of cast iron housings in UCP bearings. The housing is typically shaped like a pillow or block, with a flat base and mounting holes for easy installation and attachment to a machine or structure.
UCP bearings are widely used in various applications, including conveyor systems, agricultural machinery, industrial equipment, HVAC systems, and more. They offer several advantages:
- Easy Installation: UCP bearings are designed for easy installation and mounting. The housing’s flat base and pre-drilled mounting holes allow for straightforward attachment to a support structure or machine.
- Simple Maintenance: UCP bearings are relatively easy to maintain. They often feature removable bearing units, allowing for inspection, lubrication, and replacement when necessary. This simplifies maintenance tasks and reduces downtime.
- Load Support: UCP bearings are capable of supporting different loads, including radial and axial loads. The specific load capacity depends on the type and size of the bearing unit used within the UCP assembly.
- Protection and Contamination Resistance: The housing of a UCP bearing provides protection to the bearing unit against contaminants, moisture, and other external elements. This helps extend the bearing’s service life and maintain its performance.
- Alignment Compensation: UCP bearings often have self-aligning capabilities, allowing them to compensate for minor misalignments between the shaft and the housing. This feature helps reduce stress and wear on the bearing, enhancing its reliability and longevity.
UCP bearings are available in various sizes, configurations, and bearing types to accommodate different application requirements. It is important to select the appropriate UCP bearing based on factors such as load capacity, operating conditions, and environmental considerations.
In summary, a UCP bearing, or pillow block bearing, is a mounted bearing unit that provides support and facilitates motion in industrial applications. With their easy installation, maintenance convenience, load support, protection, and alignment compensation features, UCP bearings are widely used to ensure reliable and efficient operation of machinery and equipment.


editor by CX 2024-02-04