Product Description
Specification
The outer spherical ball bearing is actually a variant of the deep groove ball bearing, which is characterized in that the outer diameter outer surface of the outer ring ball is spherical, and can be fitted into the corresponding concave spherical surface of the bearing seat to serve as a centering function. The outer spherical bearing is mainly used to bear the radial and axial combined load mainly based on the radial load, and generally it is not suitable to bear the axial load alone.
This type of bearing can be fitted with inner ring (with full set of rollers and retainers) and outer ring
| Unit No. | Dimension (mm) | Bearing No. | Housing No. | Weight(kg) | |||||||||
| d | h | a | e | b | s | g | w | B | n | ||||
| UCP201 | 12 | 30.2 | 127 | 96 | 38 | 19 | 15 | 62 | 31 | 12.7 | UC201 | P201 | 0.63 |
| UCP202 | 15 | 30.2 | 127 | 96 | 38 | 19 | 15 | 62 | 31 | 12.7 | UC202 | P202 | 0.61 |
| UCP203 | 17 | 30.2 | 127 | 96 | 38 | 19 | 15 | 62 | 31 | 12.7 | UC203 | P203 | 0.59 |
| UCP204 | 20 | 33.3 | 127 | 96 | 38 | 19 | 15 | 65 | 31 | 12.7 | UC204 | P204 | 0.61 |
| UCP205 | 25 | 36.5 | 140 | 105 | 38 | 19 | 16 | 70 | 34 | 14.3 | UC205 | P205 | 0.74 |
| UCP206 | 30 | 42.9 | 165 | 121 | 48 | 21 | 18 | 83 | 38.1 | 15.9 | UC206 | P206 | 1.15 |
| UCP207 | 35 | 47.6 | 167 | 126 | 48 | 21 | 19 | 92 | 42.9 | 17.5 | UC207 | P207 | 1.4 |
| UCP208 | 40 | 49.2 | 184 | 136 | 54 | 21 | 19 | 98 | 49.2 | 19 | UC208 | P208 | 1.78 |
| UCP209 | 45 | 54 | 190 | 146 | 54 | 21 | 20 | 106 | 49.2 | 19 | UC209 | P209 | 2 |
| UCP210 | 50 | 57.2 | 206 | 159 | 60 | 25 | 22 | 112 | 51.6 | 19 | UC210 | P210 | 2.55 |
| UCP211 | 55 | 63.5 | 219 | 171 | 60 | 25 | 22 | 126 | 55.6 | 22.2 | UC211 | P211 | 3.2 |
| UCP212 | 60 | 69.8 | 241 | 184 | 70 | 25 | 25 | 137 | 65.1 | 25.4 | UC212 | P212 | 4.4 |
| UCP213 | 65 | 76.2 | 265 | 203 | 70 | 29 | 27 | 150 | 65.1 | 25.4 | UC213 | P213 | 5.1 |
| UCP214 | 70 | 79.4 | 266 | 210 | 72 | 31 | 27 | 156 | 74.6 | 30.2 | UC214 | P214 | 5.7 |
| UCP215 | 75 | 82.6 | 275 | 217 | 74 | 31 | 28 | 163 | 77.8 | 33.3 | UC215 | P215 | 6.3 |
| UCP216 | 80 | 88.9 | 292 | 232 | 78 | 31 | 30 | 175 | 82.6 | 33.3 | UC216 | P216 | 7.6 |
| UCP217 | 85 | 95.2 | 310 | 247 | 83 | 31 | 32 | 187 | 85.7 | 34.1 | UC217 | P217 | 9.2 |
| UCP218 | 90 | 101.6 | 327 | 262 | 88 | 33 | 34 | 2, 63192752 | |||||
| Fax: | |||||||||||||
| Address: | Mayan Industry Zone, Henghe Town, HangZhou, HangZhou, China | ||||||||||||
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| Contact Angle: | 0 |
|---|---|
| Aligning: | Non-Aligning Bearing |
| Separated: | Separated |
| Rows Number: | Single |
| Load Direction: | Radial Bearing |
| Material: | Cast Iron |
| Samples: |
US$ 10/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|

How to identify the size and specifications of a UCP bearing?
Identifying the size and specifications of a UCP bearing, also known as a pillow block bearing, requires examining various parameters and markings on the bearing itself or referring to manufacturer documentation. Here’s a detailed explanation of how to identify the size and specifications of a UCP bearing:
1. Bearing Markings: Start by inspecting the bearing for any markings or labels that provide information about its size, type, and specifications. Common markings may include the manufacturer’s logo or name, bearing model or part number, and any relevant standards or certifications. These markings can help identify the specific UCP bearing and provide a starting point for gathering further information.
2. Dimensions: Determine the dimensions of the UCP bearing, including the bore diameter (inner diameter), outer diameter, and overall width. These dimensions are typically specified in millimeters (mm) or inches (in). Measuring the bearing with calipers or using a ruler can help determine its size. Alternatively, the dimensions can be obtained from manufacturer catalogs, datasheets, or online resources.
3. Pillow Block Type: UCP bearings come in various pillow block types, such as UCP200 series or UCP300 series, which indicate different design variations and size ranges. The pillow block type is often indicated in the bearing model or part number. Identifying the specific series or type helps in selecting compatible components and determining the bearing’s load capacity and performance characteristics.
4. Load Capacity and Ratings: The load capacity and ratings of a UCP bearing are crucial specifications to consider for proper application. They indicate the maximum allowable radial and axial loads that the bearing can withstand. Load capacity information is typically provided by the manufacturer and can be found in bearing catalogs or technical documentation. It is important to ensure that the bearing’s load capacity meets the requirements of the application to prevent premature failure.
5. Lubrication: Determine the lubrication requirements of the UCP bearing. This includes identifying the recommended lubricant type, such as grease or oil, as well as the appropriate amount and frequency of lubrication. Lubrication information is often provided by the manufacturer and can be found in bearing documentation or technical specifications.
6. Sealing and Shielding: Check if the UCP bearing has any seals or shields to protect against contamination and retain lubrication. The type of seal or shield used can impact the bearing’s performance in different environments. Common seal types include rubber seals, metal shields, or labyrinth seals. The sealing arrangement may be indicated in the bearing model or part number, or it can be obtained from manufacturer documentation.
7. Manufacturer Documentation: Consult the manufacturer’s documentation, such as catalogs, datasheets, or technical manuals, for detailed information about the UCP bearing’s size, specifications, and performance characteristics. Manufacturer resources provide comprehensive information and ensure accurate identification of the bearing.
It’s important to note that the identification process may vary depending on the manufacturer and specific bearing model. If you encounter difficulties or require precise information, contacting the bearing manufacturer, distributor, or a knowledgeable expert in the field can provide further guidance and assistance in identifying the size and specifications of a UCP bearing.
Taking accurate measurements, referring to bearing markings, and utilizing manufacturer resources are key steps in correctly identifying and selecting the appropriate UCP bearing for a given application.

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 2024-03-07