China supplier China Real Manufacturer Spherical/Pillow Block/UC205 UC204 UC207 UC208 Self-Aligning/Tapered Roller/Cylindrical Roller Bearing with Great quality

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                

Certificate Authentication:


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.
  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

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)

Request Sample



Customized Request

pillow block bearing

What role do pillow block bearings play in applications with varying temperature and environmental conditions?

Pillow block bearings play a crucial role in applications with varying temperature and environmental conditions by providing reliable and durable support for rotating shafts and components. Their specific contributions in such applications can be explained as follows:

  • Temperature Stability:
  • Pillow block bearings are designed to withstand a wide range of operating temperatures. They are often constructed with materials that can handle both high and low temperature extremes. Specialized heat-resistant materials, such as high-temperature alloys or heat-treated steels, are used to ensure the bearing’s stability and integrity even in applications with elevated temperatures. By maintaining their structural integrity under varying temperature conditions, pillow block bearings help ensure the continued functionality and performance of the machinery.

  • Expansion and Contraction Compensation:
  • Varying temperature conditions can cause thermal expansion and contraction of the components in machinery. Pillow block bearings are engineered to accommodate these dimensional changes. By allowing for slight movement and adjustment due to thermal expansion, they help prevent excessive stress on the shafts and other components. This compensation for thermal expansion and contraction contributes to the overall stability and longevity of the machinery, even in environments with significant temperature fluctuations.

  • Environmental Protection:
  • In applications with varying environmental conditions, pillow block bearings provide protection against contaminants, moisture, and other external elements. They often incorporate sealing mechanisms, such as rubber seals or labyrinth seals, to prevent the entry of dirt, dust, water, and other contaminants into the bearing. This protection helps maintain the cleanliness and integrity of the bearing’s internal components, reducing the risk of premature wear, corrosion, or damage caused by environmental factors. By safeguarding the bearing, pillow block bearings ensure reliable and efficient operation in environments with varying conditions.

  • Corrosion Resistance:
  • In corrosive environments where moisture, chemicals, or other corrosive agents are present, pillow block bearings with corrosion-resistant materials, such as stainless steel or special coatings, offer additional protection. These bearings are designed to withstand the corrosive effects of the environment, preventing degradation and maintaining their functionality over an extended period. By providing corrosion resistance, pillow block bearings enhance the reliability and lifespan of machinery operating in environments with varying temperature and corrosive conditions.

  • Shock and Vibration Absorption:
  • Applications with varying temperature and environmental conditions often involve machinery subjected to shocks and vibrations. Pillow block bearings are engineered to absorb and dampen these shocks and vibrations, reducing their impact on the rotating shafts and other components. This absorption capability helps prevent excessive stress, minimizes the risk of component failure, and ensures the smooth and reliable operation of the machinery, even in environments with dynamic conditions.

  • Maintenance and Longevity:
  • Pillow block bearings designed for applications with varying temperature and environmental conditions often incorporate features that simplify maintenance and extend bearing life. They may have lubrication systems or self-lubricating properties that ensure proper lubrication even in challenging environments. Additionally, they may be designed for easy inspection, cleaning, and replacement, allowing for timely maintenance and minimizing downtime. These features contribute to the longevity and reliability of the machinery in applications with varying temperature and environmental conditions.

In summary, pillow block bearings play a critical role in applications with varying temperature and environmental conditions by providing temperature stability, compensating for expansion and contraction, protecting against contaminants and corrosion, absorbing shocks and vibrations, and facilitating maintenance and longevity. Their ability to withstand and adapt to changing conditions ensures the reliable operation and extended lifespan of machinery in diverse environments.

pillow block bearing

What are the signs of wear or damage in pillow block bearings, and when should they be replaced?

Pillow block bearings can experience wear or damage over time due to various factors. It is important to monitor their condition regularly to identify signs of wear or damage and determine when replacement is necessary. The following are common signs of wear or damage in pillow block bearings and indicators for replacement:

  • Abnormal Noise:
  • If you notice unusual noises such as grinding, squeaking, or rumbling coming from the pillow block bearing, it can be an indication of wear or damage. Excessive noise often suggests that the rolling elements or the bearing raceways are worn or pitted. In such cases, the pillow block bearing should be replaced to prevent further damage and potential failure.

  • Increased Vibration:
  • An increase in vibration levels can be a sign of problems within the pillow block bearing. Excessive vibration indicates that the bearing may be worn, misaligned, or damaged in some way. If the vibration cannot be resolved through other means, it is advisable to replace the pillow block bearing to restore smooth and efficient operation.

  • Irregular Movement:
  • If the shaft supported by the pillow block bearing exhibits irregular or uneven movement, it can be a sign of bearing wear or damage. The bearing may have developed play or lost its original precision, resulting in erratic motion. In such cases, replacing the pillow block bearing is necessary to ensure proper functioning and prevent further issues.

  • Excessive Heat:
  • If the pillow block bearing becomes unusually hot to the touch during operation, it is an indication of potential problems. Excessive heat generation can result from inadequate lubrication, misalignment, or bearing damage. Continued operation under such conditions can lead to accelerated wear and premature failure. In such cases, the pillow block bearing should be replaced and the underlying causes addressed to prevent further damage.

  • Lubrication Issues:
  • Pillow block bearings require proper lubrication to ensure smooth operation and reduce friction. If there are signs of inadequate lubrication, such as dry or discolored bearing surfaces, it can lead to increased wear and potential bearing failure. If lubrication issues cannot be resolved through lubricant replenishment or maintenance, replacing the pillow block bearing may be necessary.

  • Visible Damage:
  • Inspect the pillow block bearing visually for any visible signs of damage, such as cracks, dents, or corrosion. These visible indications may suggest that the bearing has been subjected to excessive loads, contamination, or harsh operating conditions. If significant damage is observed, replacing the pillow block bearing is recommended.

It is important to note that the specific signs of wear or damage in pillow block bearings may vary depending on the type of bearing and the application. Regular monitoring, maintenance, and following the manufacturer’s guidelines are essential for identifying potential issues and determining the appropriate timing for replacement. When in doubt, consulting with a bearing specialist or qualified technician can provide valuable insights and guidance for replacing pillow block bearings.

pillow block bearing

What are the common applications and industries where pillow block bearings are commonly used?

Pillow block bearings are widely used in various applications and industries where there is a need to support rotating shafts or other moving parts. These bearings offer versatility, ease of installation, and reliable performance. Here’s a detailed explanation of the common applications and industries where pillow block bearings are commonly used:

  • Industrial Machinery:
  • Pillow block bearings find extensive use in industrial machinery across different sectors. They are commonly employed in conveyor systems, packaging machinery, material handling equipment, printing presses, textile machinery, and food processing equipment. These bearings provide support and smooth rotation for shafts, pulleys, rollers, and other components, contributing to the efficient operation of the machinery.

  • Agricultural Equipment:
  • In the agricultural industry, pillow block bearings are utilized in various equipment such as tractors, combines, harvesters, and irrigation systems. They are used to support rotating elements like shafts, wheels, pulleys, and augers. Pillow block bearings help withstand heavy loads, provide reliable operation, and ensure the longevity of agricultural machinery under challenging field conditions.

  • Mining and Quarrying:
  • Pillow block bearings are employed in mining and quarrying operations where heavy-duty equipment is used. They are utilized in crushers, screens, conveyors, and vibrating equipment. These bearings can handle high loads and harsh operating conditions, making them suitable for the demanding environments encountered in mining and quarrying applications.

  • Construction and Building:
  • Pillow block bearings play a vital role in the construction and building industry. They are commonly used in concrete mixers, cranes, hoists, elevators, and escalators. These bearings provide support and enable smooth movement for various components and systems involved in construction and building processes.

  • Automotive and Transportation:
  • Pillow block bearings are utilized in automotive and transportation applications. They are used in commercial vehicles, buses, trucks, and trailers. These bearings support rotating shafts, wheels, and suspension systems, ensuring smooth operation and reducing friction and wear in automotive and transportation equipment.

  • Power Generation:
  • The power generation industry relies on pillow block bearings for applications such as turbines, generators, pumps, and fans. These bearings provide support and rotational motion for various components in power generation systems. They are designed to handle high temperatures, heavy loads, and high-speed operations commonly encountered in power plants.

  • HVAC and Refrigeration:
  • Pillow block bearings are commonly used in heating, ventilation, air conditioning (HVAC), and refrigeration systems. They are employed in fans, blowers, compressors, and pumps. These bearings ensure smooth and efficient operation of HVAC and refrigeration equipment, contributing to the comfort and functionality of residential, commercial, and industrial buildings.

These are just a few examples of the many applications and industries where pillow block bearings are commonly used. The versatility and reliability of these bearings make them indispensable in numerous fields, where they provide essential support and rotational motion for various machinery and equipment.

China supplier China Real Manufacturer Spherical/Pillow Block/UC205 UC204 UC207 UC208 Self-Aligning/Tapered Roller/Cylindrical Roller Bearing   with Great qualityChina supplier China Real Manufacturer Spherical/Pillow Block/UC205 UC204 UC207 UC208 Self-Aligning/Tapered Roller/Cylindrical Roller Bearing   with Great quality
editor by CX 2024-05-09