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.
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| 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 |
|---|

Are UCP bearings available in stainless steel?
Yes, UCP bearings are available in stainless steel variants. Stainless steel UCP bearings are specifically designed and manufactured using stainless steel materials for applications that require corrosion resistance, hygiene, or specific environmental conditions. Here’s a detailed explanation:
1. Corrosion Resistance: Stainless steel UCP bearings are highly resistant to corrosion, making them suitable for applications where exposure to moisture, chemicals, or other corrosive substances is a concern. The stainless steel material, typically AISI 304 or AISI 316, provides excellent resistance to rust and oxidation, ensuring extended service life in harsh environments.
2. Hygienic Applications: Stainless steel UCP bearings are commonly used in industries such as food and beverage, pharmaceuticals, and medical equipment, where cleanliness and hygiene are critical. These bearings are resistant to bacterial growth, easy to clean, and comply with strict industry regulations and standards for hygiene and sanitation.
3. High-Temperature Environments: Stainless steel UCP bearings can also withstand higher temperatures compared to standard UCP bearings made of other materials. This makes them suitable for applications where elevated temperatures are present, such as ovens, kilns, or high-temperature processing equipment.
4. Special Environmental Conditions: Stainless steel UCP bearings are chosen for applications in specific environmental conditions where other materials may not be suitable. For example, in outdoor or marine environments, where exposure to saltwater or corrosive gases is prevalent, stainless steel bearings offer superior resistance and durability.
Stainless steel UCP bearings typically have the same design and dimensions as standard UCP bearings, but with stainless steel materials used for the bearing components, including the inner and outer rings, balls, and cage. The sealing elements, such as seals or shields, may also be made of stainless steel or other compatible materials.
It’s important to note that stainless steel UCP bearings may have limitations in terms of load capacity and operating speed compared to their counterparts made of other materials, such as chrome steel. The specific performance characteristics and limitations of stainless steel UCP bearings may vary depending on the manufacturer and the grade of stainless steel used.
When selecting stainless steel UCP bearings, it’s essential to consider the application requirements, including load capacity, temperature range, environmental conditions, and regulatory compliance. Consulting with bearing manufacturers, distributors, or industry experts can help in determining the appropriate stainless steel UCP bearings for a particular application.
Proper installation, lubrication, and maintenance practices should also be followed to ensure optimal performance and longevity of stainless steel UCP bearings in their intended applications.

What materials are UCP bearings made of?
UCP bearings, also known as pillow block bearings, are manufactured using various materials to meet specific performance requirements and application needs. The materials used for UCP bearings include:
- Bearing Housing: The bearing housing, which provides the outer structure and support for the bearing, is typically made of materials such as cast iron, ductile iron, or cast steel. These materials offer excellent strength, rigidity, and durability, making them suitable for handling heavy loads and withstanding demanding operating conditions.
- Bearing Insert: The bearing insert, also known as the inner ring or the rolling element, is made of different materials depending on the application requirements. Common materials used for bearing inserts include:
- Chrome Steel: Chrome steel, also known as bearing steel, is a widely used material for bearing inserts. It offers good hardness, toughness, and wear resistance, making it suitable for a broad range of applications.
- Stainless Steel: Stainless steel bearing inserts are used when corrosion resistance is a priority. Stainless steel offers excellent resistance to moisture, chemicals, and other corrosive substances, making it suitable for applications in harsh or corrosive environments.
- Ceramic: Ceramic bearing inserts, typically made of materials such as silicon nitride or zirconia, are used in specialized applications that require high-speed operation, extreme temperature resistance, or electrical insulation properties. Ceramic inserts offer low friction, high stiffness, and resistance to wear and corrosion.
- Thermoplastic: Thermoplastic bearing inserts, often made of materials like polyamide or PBT (polybutylene terephthalate), are used in applications where lightweight, chemical resistance, or low noise operation is required. Thermoplastic inserts can offer good load-bearing capacity and self-lubricating properties.
The specific material selection for UCP bearings depends on factors such as load capacity, operating conditions, environmental factors, and cost considerations. It’s important to consult the manufacturer’s documentation or specifications for the specific material options available for a particular UCP bearing model.
In summary, UCP bearings are typically made of materials such as cast iron, ductile iron, or cast steel for the housing, while the bearing insert can be made of materials like chrome steel, stainless steel, ceramic, or thermoplastic. The choice of materials depends on the specific application requirements and the desired performance characteristics.

Who are the leading manufacturers of UCP bearings?
Several leading manufacturers specialize in producing high-quality UCP bearings, also known as pillow block bearings. These manufacturers have a strong reputation for their expertise in bearing manufacturing and offer a wide range of UCP bearing options. Here’s a detailed explanation of some of the leading manufacturers of UCP bearings:
- SKF: SKF is a renowned global manufacturer of bearings and related products. They offer a comprehensive range of UCP bearings that are known for their reliability, performance, and durability. SKF’s UCP bearings are designed to meet various industrial requirements and are available in different sizes and configurations.
- NSK: NSK is a well-established manufacturer of bearings, including UCP bearings. They have a strong presence in the market and are known for their high-quality and precision-engineered products. NSK’s UCP bearings are designed to provide excellent performance in diverse applications and are available in various sizes and materials.
- NTN: NTN is a trusted manufacturer of bearings and precision products. They offer a wide range of UCP bearings that are known for their quality, reliability, and long service life. NTN’s UCP bearings are designed to meet industry standards and are available in different sizes and configurations to suit various applications.
- Timken: Timken is a reputable manufacturer of bearings and power transmission products. They manufacture UCP bearings that are known for their robustness, precision, and exceptional performance. Timken’s UCP bearings are designed to withstand heavy loads and harsh operating conditions, making them suitable for a wide range of industrial applications.
- FAG: FAG, part of the Schaeffler Group, is a leading manufacturer of bearings and related products. They offer a diverse range of UCP bearings that are known for their high-quality construction and superior performance. FAG’s UCP bearings are designed to meet demanding industrial requirements and are available in various sizes and designs.
These are just a few examples of leading manufacturers of UCP bearings. Other reputable manufacturers in the industry include Koyo, Nachi, RHP, and FYH, among others. It’s worth noting that the availability and popularity of specific manufacturers may vary depending on your location and industry requirements.
When selecting a UCP bearing, it’s important to consider factors such as product quality, reliability, technical support, and availability. Consulting with local distributors, reviewing manufacturer catalogs, and considering customer reviews can help you make an informed decision about the most suitable manufacturer for your specific needs.
In summary, leading manufacturers of UCP bearings include SKF, NSK, NTN, Timken, and FAG, among others. These manufacturers are known for their high-quality products and extensive expertise in bearing manufacturing.


editor by CX 2024-02-09