Product Description

Spherical surface ball Bearings
Insert spherical bearings are preferred for occasions requiring simple equipment and parts, such as agricultural machinery, transportation systems or construction machinery. It is mainly used to bear combined radial and axial loads, mainly radial loads. Generally, it is not suitable to bear axial loads alone. This kind of bearings can be installed with inner rings (with a full set of rollers and cages) and outer rings respectively. This kind of bearing does not allow the shaft to tilt relative to the housing, and will generate additional axial force under the radial load. The size of the axial clearance of this kind of bearing has a great relationship with whether the bearing can work normally. When the axial clearance is too small, the temperature rise is high; when the axial clearance is large, the bearing is easy to be damaged. Therefore, special attention should be paid to adjusting the axial clearance of the bearing during installation and operation. If necessary, pre-interference installation can be used to increase the rigidity of the bearing.


Company Profile
Haisai bearing is a regular model industrial manufacturing enterprise integrating bearing product research and development, design, manufacturing, import and export trade. The company was founded in 1998, covers an area of more than 90,000 square meters, plant area of more than 20,000 square meters, more than 200 employees, more than 20 technical engineers, has passed the international/SO9001:2008,1SO/TS16949:2009 and other quality management system certification. In addition, we have 2 factories (located in ZheJiang and HangZhou respectively) and a trading company. We have completed the high-speed forging of bearing steel dock, automatic high-precision grinding, cryoquenching, unitized automatic constant temperature grinding, intelligent assembly and so on, complete profession production. The product size from 30mm-750mm covers single and double row tapered roller bearing, British garden taper roller bearing, deep groove ball bearing, stainless steel shaft reducer special bearings, agricultural equipment bearings, a total of more than 2500 specifications of products.
We have a professional team of excellent quality, the technical center is equipped with all kinds of testing machines, high-precision testing instruments,material analysis instruments and more than 60 sets, for users to design develop, trial-produce all kinds of special purpose bearings, and do our best to provide high-end customers around the world with the best solutions and good after-sales service!
We has many years of experience in the industrial field of bearing supporting and industrial service, the products are exported to the United States, Germany, Italy, France, the Czech Republic, Russia and other European and American countries and supporting enterprises. We both at home and abroad enjoy a good business reputation!
We promise to be responsible for every set of bearings and industrial products sold! Make every customer satisfied, is our constant pursuit!




Model NO. Dimensions (mm) Model NO. Dimensions (mm) Model NO. Dimensions (mm) Model NO. Dimensions (mm)
Length Height Length Height Height Width Length Height
UCT201 94 89 UCFC201 55.1 100 UK205 35 25 UKP205 140 71
UCT202 94 89 UCFC202 55.1 100 UK206 38 30 UKP206 165 83
UCT203 94 89 UCFC203 55. 1 100 UK207 43 35 UKP207 167 93
UCT204 94 89 UCFC204 55.1 100 UK208 46 40 UKP208 184 98
UCT205 97 89 UCFC205 63.6 115 UK209 50 45 UKP209 190 106
UCT206 113 102 UCFC206 70. 7 125 UK210 55 50 UKP210 206 114
UCT207 129 102 UCFC207 77.8 135 UK211 59 55 UKP211 219 126
UCT208 144 114 UCFC208 84. 8 145 UK212 62 60 UKP212 241 138
UCT209 144 117 UCFC209 93.3 -160 UK213 65 65 UKP213 265 151
UCT210 149 117 UCFC210 97.6 165 UK215 73 75 UKP215 275 163
UCT211 171 146 UCFC211 106.1 185 UK216 78 80 UKP216 292 175
UCT212 194 146 UCFC212 113.1 1 95 UK217 82 85 UKP217 310 187
UCT213 224 167 UCFC213 120.2 205 UK218 86 90 UKP305 175 85
UCT214 224 167 UCFC214 125. 1 215 UK305 35 25 UKP306 180 95
UCT215 232 167 UCFC215 130.1 220 UK306 38 30 UKP307 210 106
UCT216 235 184 UCFC216 141 .4 240 UK307 43 35 UKP308 220 116
UCT217 260 198 UCFC217 147.1 250 UK308 46 40 UKP309 245 129
UCT305 122 89 UCFC218 155.5 265 UK309 50 45 UKP310 275 143
UCT306 137 100       UK310 55 50 UKP311 310 154
UCT307 150 111 UCPA201 76 62 UK311 59 55 UKP312 330 165
UCT308 162 124 UCPA202 76 62 UK312 62 60 UKP313 340 176
UCT309 178 138 UCPA203 76 62 UK313 65 65 UKP315 380 198
UCT310 191 151 UCPA204 76 62 UK315 73 75 UKP316 400 210
UCT311 207 163 UCPA205 84 72 UK316 78 80 UKP317 420 220
UCT312 220 178 UCPA206 94 84 UK317 82 85 UKP318 430 235
UCT313 238 190 UCPA207 110 95 UK318 86 90 UKP319 470 250
UCT314 252 202 UCPA208 116 100 UK319 90 95 UKP320 490 275
UCT315 262 216 UCPA209 120 108 UK320 97 100      
UCT316 282 230 UCPA210 130 116            
UCT317 298 240 UCPA211 140 125            
UCT318 312 255 UCPA212 150 138            
UCT319 322 270 UCPA213 160 150            
UCT320 345 290                  
UCT322 385 320                  
UCT324 432 355                  
UCT326 465 385                  
UCT328 515 415                

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We support shipping by sea, by land, by air and by express.
It can be shipped according to the needs of customers, and it is shipped by sea by default.

Q:What’s your after-sales service and warranty?
A: We promise to bear the following responsibilities when defective products were found:
1. Replacements would be sent with goods of your next order;
2. Refund for defective products if customers require.

Q:Do you accept ODM&OEM orders?
A: Yes, we provide ODM&OEM services to worldwide customers, we also customize OEM box and packing as your requirements.

Q:What’s the MOQ?
A: MOQ is 10pcs for standardized products; for customized products, MOQ should be negotiated in advance. There is no MOQ for sample orders.

Q:How long is the lead time?
A: The lead time for sample orders is 3-5 days, for bulk orders is 5-15 days.

Q:Do you offer free samples? 
A: Yes we offer free samples to distributors and wholesalers, however customers should bear freight. We DO NOT offer free samples to end users. 

Q:How to place order?
A: 1. Email us the model, brand and quantity,shipping way of bearings and we will quote our best price for you; 
2. Proforma Invoice made and sent to you as the price agreed by both parts; 
3. Deposit Payment after confirming the PI and we arrange production; 
4. Balance paid before shipment or after copy of Bill of Loading.
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Inside Diameter: 25.4mm
Outer Diameter: 52mm
Width: 34.1mm
Service: OEM Service.Design Service
OEM: Support
Customization: Support
US$ 0.46/Piece
1 Piece(Min.Order)

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Customized Request

tapered roller bearing

What are the Steps for Proper Installation and Alignment of Tapered Roller Bearings?

Proper installation and alignment of tapered roller bearings are essential to ensure optimal performance, reliability, and longevity. Incorrect installation can lead to premature wear, reduced efficiency, and even catastrophic failure. Here are the steps to follow for the correct installation and alignment of tapered roller bearings:

  • 1. Clean and Prepare the Components:

Thoroughly clean the bearing components, including the bearing housing, shaft, and associated parts. Remove any dirt, debris, or old lubricant that could impact the bearing’s operation.

  • 2. Choose the Correct Tools:

Use appropriate tools and equipment for the installation, such as bearing heaters for controlled heating and proper fit. Avoid using excessive force or striking the bearing directly, as this can damage the components.

  • 3. Inspect the Bearings:

Before installation, visually inspect the tapered roller bearings for any signs of damage or defects. Ensure that the rollers and raceways are clean and free from contaminants.

  • 4. Apply Lubrication:

Apply the recommended lubricant to the rollers, raceways, and other bearing components. Proper lubrication is crucial for reducing friction, dissipating heat, and preventing premature wear.

  • 5. Mount the Bearings:

Mount the bearings onto the shaft or into the housing using appropriate methods. Avoid applying excessive force directly to the bearing components, as this can lead to damage. Utilize specialized tools like bearing pullers and press tools if necessary.

  • 6. Ensure Proper Alignment:

Proper alignment is critical to prevent excessive loads, misalignment, and premature wear. Use precision measurement tools to ensure the bearing is aligned with the shaft and housing within specified tolerances.

  • 7. Apply Controlled Heat:

If necessary, apply controlled heat to the bearing components to aid in expansion and facilitate proper fit. Ensure that the heat is applied uniformly to avoid distortion or damage.

  • 8. Use Adequate Preload:

If specified for your application, apply the appropriate axial preload to eliminate internal clearance and optimize load distribution among the rollers.

  • 9. Secure Bearings:

Secure the bearings in place using locking mechanisms, such as locknuts, to prevent unintended movement and ensure proper retention.

  • 10. Verify Fit and Function:

After installation, verify that the bearings are properly seated, aligned, and functioning as intended. Rotate the shaft to ensure smooth operation and absence of unusual noise or vibration.

  • 11. Document the Installation:

Keep a record of the installation process, including alignment measurements, preload values, and any relevant notes. This documentation can aid in future maintenance and troubleshooting.

Proper installation and alignment are essential to achieving optimal performance and longevity from tapered roller bearings. Following these steps ensures that the bearings operate smoothly and reliably within their intended applications.

cylindrical roller bearing

Can you explain the maintenance and installation considerations for cylindrical roller bearings?

Maintenance and proper installation are crucial for ensuring the optimal performance and longevity of cylindrical roller bearings. Let’s explore the key considerations for maintenance and installation:

  • Installation Considerations:

Proper installation of cylindrical roller bearings is essential to prevent premature failure and ensure reliable operation. Here are some important considerations:

  • Handling and Storage:

Handle the bearings with care to avoid dropping or impact that could damage the bearing components. Keep the bearings in their original packaging or store them in a clean, dry environment to protect them from contamination, moisture, and corrosive substances. Avoid exposing the bearings to excessive heat or temperature fluctuations during storage.

  • Cleanliness:

Before installation, ensure that the bearing housing, shaft, and adjacent components are clean and free from dirt, debris, or old lubricant residues. Contaminants can shorten the bearing’s lifespan and affect its performance. Use appropriate cleaning methods and solvents to achieve the necessary cleanliness.

  • Mounting Methods:

Follow the manufacturer’s recommended mounting methods and tools for installing cylindrical roller bearings. Improper mounting techniques can cause bearing misalignment, excessive preload, or damage to the bearing components. Consider using mounting equipment such as induction heaters or hydraulic mounting tools to facilitate proper and efficient installation.

  • Shaft and Housing Fits:

Ensure that the bearing’s shaft and housing fits are within the recommended tolerances specified by the manufacturer. Proper fits help maintain the desired clearance, preload, or interference fit necessary for the bearing’s optimal performance. Consult bearing catalogs or manufacturer guidelines for the appropriate fits based on the application requirements.

  • Lubrication:

Proper lubrication is critical for the performance and longevity of cylindrical roller bearings. Select the correct lubricant type, viscosity, and quantity based on the operating conditions and manufacturer recommendations. Apply the lubricant evenly and ensure it reaches all critical contact surfaces. Regularly monitor and replenish the lubricant according to the recommended maintenance intervals.

  • Maintenance Considerations:

Regular maintenance helps identify and address any issues or degradation that may arise during the bearing’s operation. Here are some key maintenance considerations for cylindrical roller bearings:

  • Monitoring:

Regularly inspect the bearings for any signs of abnormal noise, vibration, overheating, or lubricant leakage. Monitor the bearing’s operating conditions, including speed, temperature, and load to ensure they are within the recommended limits. Implement condition monitoring techniques such as vibration analysis or temperature measurement to detect early signs of potential problems.

  • Re-lubrication:

Monitor the lubricant condition and replenish it as necessary. Follow the manufacturer’s recommended re-lubrication intervals and procedures. Consider using automatic lubrication systems or centralized lubrication systems to ensure consistent and proper lubrication.

  • Sealing and Contamination Control:

Inspect and maintain the seals or sealing arrangements to prevent the ingress of contaminants into the bearing. Regularly clean the surrounding area and implement effective contamination control measures, such as using protective covers or seals, to minimize the exposure of the bearing to dirt, dust, or moisture.

  • Replacement:

If a cylindrical roller bearing shows signs of significant wear, damage, or failure, replace it promptly with a new bearing of the correct size and specification. Follow the appropriate dismounting procedures and take precautions to avoid any damage to the shaft, housing, or adjacent components during the replacement process.

By adhering to proper installation techniques and implementing regular maintenance practices, the performance, reliability, and lifespan of cylindrical roller bearings can be optimized, leading to improved operational efficiency and reduced downtime.

cylindrical roller bearing

Can you describe the load-carrying capacity and load ratings of cylindrical roller bearings?

Cylindrical roller bearings have specific load-carrying capacity and load rating characteristics that determine their performance under different operating conditions. Let’s delve into the details of load-carrying capacity and load ratings for cylindrical roller bearings:

  • Radial Load-Carrying Capacity:

Cylindrical roller bearings are primarily designed to handle radial loads, which are forces applied perpendicular to the shaft. They have a high radial load-carrying capacity due to the arrangement of cylindrical rollers and their large contact area with the raceways. The load is distributed evenly along the length of the rollers, allowing cylindrical roller bearings to support heavy machinery components and withstand substantial radial forces.

  • Axial Load-Carrying Capacity:

While cylindrical roller bearings are primarily intended for radial loads, they can also accommodate moderate axial loads, which are forces applied parallel to the shaft. The axial load-carrying capacity of cylindrical roller bearings is limited compared to their radial load capacity. Therefore, for applications with predominantly axial loads, other types of bearings, such as thrust bearings, should be considered.

  • Dynamic Load Rating:

The dynamic load rating is a key parameter that indicates the maximum load a bearing can withstand under specific operating conditions without suffering premature fatigue failure. It is defined as the constant radial load (or radial equivalent load) that a group of identical bearings can theoretically endure for a rating life of one million revolutions. The dynamic load rating is specified by the bearing manufacturer and is expressed in Newtons (N) or pounds-force (lbf).

  • Static Load Rating:

The static load rating of a cylindrical roller bearing represents the maximum radial load it can sustain without exhibiting excessive permanent deformation. Unlike the dynamic load rating, which considers the fatigue life of the bearing, the static load rating focuses on the bearing’s ability to withstand a static load for an extended period without experiencing plastic deformation or other permanent damage. Similar to the dynamic load rating, the static load rating is provided by the manufacturer and is expressed in Newtons (N) or pounds-force (lbf).

  • Load Rating Calculation:

The load ratings of cylindrical roller bearings are determined through standardized calculation methods defined by international standards organizations such as ISO (International Organization for Standardization) and ABMA (American Bearing Manufacturers Association). These calculations take into account factors such as bearing dimensions, geometry, material properties, and operating conditions to establish the dynamic and static load ratings for a specific bearing model.

  • Application Considerations:

When selecting cylindrical roller bearings for a particular application, it is crucial to consider the expected load requirements, load orientation, and operating conditions. The calculated load ratings should be compared to the actual loads that the bearing will experience in the application to ensure that the chosen bearing can safely and reliably support the anticipated loads throughout its service life.

In conclusion, cylindrical roller bearings have a high radial load-carrying capacity and can accommodate moderate axial loads. The dynamic and static load ratings provided by the manufacturer serve as important parameters for assessing the bearing’s load-carrying capability and determining its suitability for specific applications.

China Professional China Real Manufacturer Spherical/Pillow Block/UC205 UC204 UC207 UC208 Self-Aligning/Tapered Roller/Cylindrical Roller Bearing   with Best SalesChina Professional China Real Manufacturer Spherical/Pillow Block/UC205 UC204 UC207 UC208 Self-Aligning/Tapered Roller/Cylindrical Roller Bearing   with Best Sales
editor by CX 2024-05-09