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: | 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 long do UCP bearings last?
The lifespan of UCP bearings, also known as pillow block bearings, can vary depending on several factors. Here’s a detailed explanation of the factors that can influence the longevity of UCP bearings:
- Operating Conditions: The operating conditions play a significant role in the lifespan of UCP bearings. Factors such as the load magnitude, speed, temperature, and environmental conditions can impact the bearing’s performance and durability. Bearings operating under heavy loads, high speeds, or in harsh environments may experience increased wear and fatigue, potentially reducing their lifespan.
- Maintenance and Lubrication: Proper maintenance practices, including regular inspection, cleaning, and lubrication, can significantly extend the lifespan of UCP bearings. Adequate lubrication forms a protective film between the rolling elements and the bearing races, reducing friction and wear. Insufficient or improper lubrication can lead to increased friction, heat generation, and premature failure of the bearings.
- Quality and Material: The quality and material composition of UCP bearings can influence their lifespan. Bearings made from high-quality materials, such as stainless steel or chrome steel, are generally more resistant to wear, corrosion, and fatigue. Careful selection of UCP bearings from reputable manufacturers, considering factors like load ratings and performance specifications, can contribute to longer bearing life.
- Installation and Alignment: Proper installation and alignment of UCP bearings are critical for their longevity. Ensuring correct shaft and housing fits, accurate alignment of the bearing components, and appropriate tightening of locking mechanisms help distribute loads evenly and prevent excessive stress or misalignment. Improper installation can lead to premature wear, increased friction, and reduced bearing life.
- Application-Specific Factors: The specific application in which UCP bearings are used can influence their lifespan. Factors like shock loads, vibration, contamination, and the presence of corrosive substances can affect bearing performance and durability. Adequate protection measures, such as seals or shields, can help mitigate these factors and prolong bearing life.
Given these factors, it can be challenging to provide an exact lifespan for UCP bearings. In some applications, UCP bearings can last for many years or even decades if properly maintained and operated within their specified limits. However, in demanding or unfavorable conditions, the lifespan of UCP bearings may be shorter, requiring more frequent inspection and replacement.
It’s important to monitor the condition of UCP bearings regularly and look for signs of wear, damage, or performance degradation. Any unusual noise, excessive vibration, increased temperature, or other signs of bearing failure should be addressed promptly to avoid further damage to the bearings and the machinery they support.
Consulting the manufacturer’s documentation, maintenance guidelines, or seeking advice from bearing experts can provide more specific information regarding the expected lifespan of UCP bearings in a particular application or operating environment.

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.

How is a UCP bearing different from other types of bearings?
A UCP bearing, also known as a pillow block bearing, has distinct characteristics that set it apart from other types of bearings. While bearings serve the common purpose of facilitating motion and reducing friction, UCP bearings have specific design features that make them unique. Here’s a detailed explanation:
1. Pillow Block Design: One key difference is the design of the housing. UCP bearings have a pillow block design, which refers to the shape of the housing. The housing is typically a solid, one-piece structure shaped like a pillow or block, with a flat base and mounting holes. This design allows for easy installation and mounting on a support structure or machine.
2. Mounted Bearing: UCP bearings are mounted bearings, meaning they are preassembled units that combine a bearing unit with a housing. The bearing unit consists of a rolling element bearing, such as a ball bearing or a roller bearing, which enables smooth and low-friction motion. The housing provides support and protection for the bearing unit.
3. Support Structure: UCP bearings are commonly used in applications where a shaft needs to be supported and allowed to rotate or move linearly. The housing of a UCP bearing serves as a support structure for the bearing unit and provides a stable platform for the shaft to operate.
4. Easy Installation: UCP bearings are designed for easy installation. The housing’s flat base and pre-drilled mounting holes allow for straightforward attachment to a support structure or machine. This ease of installation simplifies the setup process and reduces downtime.
5. Application Versatility: UCP bearings are widely used in various applications across different industries. They are commonly found in conveyor systems, agricultural machinery, industrial equipment, HVAC systems, and more. The versatility of UCP bearings makes them suitable for a range of motion control and power transmission applications.
6. Specific Load Capacity: UCP bearings have specific load capacity ratings depending on the type and size of the bearing unit used within the UCP assembly. These bearings can support both radial and axial loads, allowing them to accommodate different load requirements in various applications.
7. 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 in challenging operating conditions.
8. Alignment Compensation: UCP bearings often have self-aligning capabilities. This means they can compensate for minor misalignments between the shaft and the housing. The ability to accommodate slight misalignments reduces stress and wear on the bearing, enhancing its reliability and longevity.
It’s important to note that UCP bearings are just one type of bearing available in the market. Other types, such as deep groove ball bearings, spherical roller bearings, cylindrical roller bearings, and tapered roller bearings, have their own unique designs and applications. The selection of the most suitable bearing type depends on factors such as the specific application requirements, load conditions, operating speeds, and environmental considerations.
In summary, UCP bearings, with their pillow block design, mounted bearing configuration, easy installation, versatility, load capacity, protection features, and alignment compensation capabilities, offer distinct advantages in motion control and power transmission applications.


editor by CX 2024-02-28