Product Description
Product Name |
51211 51212 51213 51214 51215 |
Material |
Chrome Steel GCR15 |
Product Type |
Thrust ball bearing |
accuracy |
P0 P2 P4 P5 P6 |
Customer quality assurance |
Warranty for 1 year |
application program |
Crane hook, vertical water pump, vertical centrifuge, low speed reducer |
Quality |
100% Inspection |
Brand |
DJMC &OEM |
Packing |
According to the buyer requests for packaging |
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Bearing No. | Boundary dimensions(mm) | Load ratings(kN) | Limiting speeds(r/min) | Weight | ||||
d | D | T | Ca | Coa | Grease | Cor | (kg) | |
51100 | 10 | 24 | 9 | 10 | 14 | 6500 | 1000 | 0.02 |
51200 | 10 | 26 | 11 | 12.7 | 17.1 | 5700 | 8800 | 0.03 |
51101 | 12 | 26 | 9 | 10.3 | 15.4 | 6500 | 10000 | 0.571 |
51201 | 12 | 28 | 11 | 13.2 | 19 | 5400 | 8300 | 0.034 |
51102 | 15 | 28 | 9 | 10.5 | 16.8 | 6100 | 9400 | 0.571 |
51202 | 15 | 32 | 12 | 16.6 | 24.8 | 4900 | 7500 | 0.046 |
51103 | 17 | 30 | 9 | 10.8 | 18.2 | 6100 | 9400 | 0.571 |
51203 | 17 | 25 | 12 | 17.2 | 27.3 | 4900 | 7500 | 0.053 |
51104 | 20 | 25 | 10 | 14.2 | 24.7 | 5100 | 7900 | 0.04 |
51204 | 20 | 40 | 14 | 22.3 | 37.7 | 3900 | 6000 | 0.082 |
51304 | 20 | 47 | 18 | 35 | 55.8 | 3600 | 4500 | 0.092 |
51105 | 25 | 42 | 11 | 19.5 | 37.2 | 4400 | 6800 | 0.059 |
51205 | 25 | 47 | 15 | 27.8 | 50.4 | 3600 | 5500 | 0.12 |
51305 | 25 | 52 | 18 | 35.7 | 61.4 | 3100 | 4800 | 0.18 |
51405 | 25 | 60 | 24 | 55.6 | 89.4 | 2600 | 4000 | 0.34 |
51106 | 30 | 47 | 11 | 20.4 | 42.2 | 4300 | 6600 | 0.068 |
51206 | 30 | 52 | 16 | 29.3 | 58.2 | 3400 | 5200 | 0.15 |
51306 | 30 | 60 | 21 | 42.8 | 78.7 | 2700 | 4200 | 0.27 |
51406 | 30 | 70 | 28 | 72.8 | 126 | 2200 | 3400 | 0.53 |
51107 | 35 | 52 | 12 | 20.4 | 44.7 | 3900 | 6000 | 0.09 |
51207 | 35 | 62 | 18 | 39.2 | 78.2 | 2900 | 4500 | 0.22 |
51307 | 35 | 68 | 24 | 55.5 | 105 | 2400 | 3700 | 0.39 |
51407 | 35 | 80 | 32 | 87.1 | 155 | 1900 | 2900 | 0.79 |
51108 | 40 | 60 | 13 | 26.9 | 62.8 | 3400 | 5300 | 0.12 |
51208 | 40 | 68 | 19 | 46.9 | 98.3 | 2700 | 4200 | 0.27 |
51308 | 40 | 78 | 26 | 69.3 | 135 | 2100 | 3300 | 0.55 |
51408 | 40 | 90 | 36 | 113 | 205 | 1700 | 2600 | 1.14 |
51109 | 45 | 65 | 14 | 27.8 | 69.1 | 3200 | 5000 | 0.15 |
51209 | 45 | 73 | 20 | 47.7 | 105 | 2600 | 4000 | 0.32 |
51309 | 45 | 85 | 28 | 80 | 163 | 1900 | 3000 | 0.69 |
51409 | 45 | 100 | 39 | 130 | 242 | 1500 | 2300 | 1.47 |
51110 | 50 | 70 | 14 | 28.8 | 75.4 | 3100 | 4800 | 0.16 |
51210 | 50 | 78 | 22 | 48.5 | 111 | 2300 | 3600 | 0.39 |
51310 | 50 | 95 | 31 | 91.6 | 186 | 1800 | 2700 | 1 |
51410 | 50 | 110 | 43 | 148 | 283 | 1400 | 2100 | 1.99 |
51111 | 55 | 78 | 16 | 34.8 | 93.1 | 2800 | 4300 | 0.24 |
51211 | 55 | 90 | 25 | 69.4 | 159 | 2100 | 3200 | 0.61 |
51311 | 55 | 105 | 35 | 119 | 246 | 1600 | 2400 | 1.34 |
51411 | 55 | 120 | 48 | 178 | 359 | 1200 | 1900 | 2.64 |
51112 | 60 | 85 | 17 | 41.4 | 113 | 2600 | 4000 | 0.29 |
51212 | 60 | 95 | 26 | 73.6 | 179 | 1900 | 3000 | 0.69 |
51312 | 60 | 110 | 35 | 124 | 267 | 1500 | 2300 | 1.43 |
51412 | 60 | 130 | 51 | 201 | 397 | 1100 | 1700 | 3.51 |
51113 | 65 | 90 | 18 | 41.7 | 117 | 2400 | 3700 | 0.34 |
51213 | 65 | 100 | 27 | 74.8 | 189 | 1900 | 2900 | 0.77 |
51313 | 65 | 155 | 36 | 128 | 287 | 1400 | 2200 | 1.57 |
51413 | 65 | 140 | 56 | 232 | 493 | 1000 | 1600 | 4.47 |
51114 | 70 | 95 | 18 | 43 | 127 | 2300 | 3600 | 0.36 |
51214 | 70 | 105 | 27 | 73.6 | 189 | 1800 | 2800 | 0.81 |
51314 | 70 | 125 | 40 | 148 | 339 | 1300 | 2000 | 2.06 |
51414 | 70 | 150 | 60 | 250 | 553 | 940 | 1450 | 5.48 |
51115 | 75 | 100 | 19 | 42.3 | 127 | 2200 | 3400 | 0.42 |
51215 | 75 | 110 | 27 | 7.74 | 209 | 1800 | 2700 | 0.86 |
51315 | 75 | 135 | 44 | 171 | 396 | 1200 | 1900 | 2.68 |
51415 | 775 | 160 | 65 | 252 | 560 | 880 | 1350 | 6.75 |
51116 | 80 | 105 | 19 | 44.6 | 141 | 2100 | 3300 | 0.43 |
51216 | 80 | 115 | 28 | 78.5 | 218 | 1700 | 2600 | 0.95 |
51316 | 80 | 140 | 44 | 176 | 242 | 1200 | 1800 | 2.82 |
51117 | 85 | 110 | 19 | 45.9 | 150 | 2100 | 3200 | 0.46 |
51217 | 85 | 125 | 31 | 92.3 | 251 | 1500 | 2300 | 1.29 |
51317 | 85 | 150 | 49 | 206 | 498 | 1100 | 1700 | 3.66 |
51118 | 90 | 120 | 22 | 59.7 | 190 | 1900 | 2900 | 0.68 |
51218 | 90 | 135 | 35 | 117 | 326 | 1400 | 2100 | 1.77 |
51318 | 90 | 155 | 50 | 213 | 524 | 1000 | 1600 | 3.88 |
51120 | 100 | 135 | 25 | 85 | 268 | 1600 | 2500 | 0.99 |
51220 | 100 | 150 | 38 | 147 | 410 | 1200 | 1900 | 2.36 |
51320 | 100 | 170 | 55 | 236 | 596 | 940 | 1450 | 5.11 |
51122 | 110 | 145 | 25 | 87.1 | 288 | 1600 | 2400 | 1.08 |
51222 | 110 | 160 | 38 | 148 | 431 | 1200 | 1800 | 2.57 |
51322 | 110 | 190 | 63 | 280 | 754 | 810 | 1250 | 7.72 |
51124 | 120 | 155 | 25 | 89 | 308 | 1500 | 2300 | 1.16 |
51224 | 120 | 170 | 39 | 154 | 472 | 1100 | 1700 | 2.86 |
51126 | 130 | 170 | 30 | 104 | 352 | 130 | 2000 | 1.87 |
51226 | 130 | 190 | 45 | 203 | 622 | 970 | 1500 | 4.09 |
51128 | 140 | 180 | 31 | 107 | 377 | 1200 | 1900 | 2.2 |
51228 | 140 | 200 | 46 | 215 | 669 | 940 | 1450 | 4.46 |
51130 | 150 | 190 | 31 | 109 | 402 | 1200 | 1900 | 2.15 |
51230 | 150 | 215 | 50 | 244 | 768 | 840 | 1300 | 5.64 |
51100 51101 51102 51103 51104 51105 51106 51107
51108 51109 51110 51111 51112 51113 51114 51115
51116 51117 51118 51120 51122 51124 51126 51128
51130 51132 51314 51316 51138 51140 51144 51148
51130M 51134M 51136M 51138M 51140M 51144M 51148M 51152M
51156M 51160M 51164M 51168M 51172M 51176M 51180M 51184M
51200 51201 51202 51203 51204 51205 51206 51207Â
51208 51209 51210 51211 51212 51213 51214 51215
51216 51217 51218 51220 51222 51224 51226 51228Â
51230 51232 51234 51236 51238 51240 51244 51248
51220M 51222M 51224M 51226M 51228M 51230M 51232M 51234M
52136M 51238M 51240M 51244M 51248M 51252M 51256M 51260MÂ
51264M 51268M 51272M
51304 51305 51306 51307 51308 51309 51310 51311
51312 51313 51314 51315 51316 51317 51318 51320Â
51322 51324 51328 51330 51332 51334 51336 51340
51320M 51322M 51320M 51324M 51326M 51328M 51330M 51334M
51336M 51340M 51344M 51348M
51405 51406 51407 51408 51409 51410 51411 51412 51413
51414 51415 51416 51417 51418 51420 51422 51424 51426
51415M 51416M 51418M 51420M 51422M 51426M 51428M 51430M 51436M
Product Description
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FAQ
1. Where is our factory? We are based in ZheJiang , China, We are an integrated enterprise of industry and trade start from 2008,sell to Domestic Market(40.00%),South America(10.00%),Eastern Europe(10.00%),North America(5.00%),Southeast Asia (5.00%), Africa(5.00%),Mid East(5.00%),Eastern Asia(5.00%) Central America(5.00%),Northern Europe(5.00%),South, Asia(5.00%). Our brand is DMC.2. How can we guarantee quality?
Before we mass-produce the goods. Provide the customer with a free sample list, sample confirmation is satisfied with the
customer, we according to the requirements of the customer mass production if the bearing goods received by the customer are not
satisfied, the product can be returned and replaced within a month.
3.What do you get from us?
We can provide all kinds of bearings OEM&ODM customiz
-ed service.
You will get an excellent supplier and excellent bearing price. We will help you revitalize your career and try our best to let customers earn more money.
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Customer Order Guarantee: | Warranty 1 Year |
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Minimum Order Quantity: | 1 Piece |
Product Advantage: | High Precision Compression Speed |
Samples: |
US$ 2/Piece
1 Piece(Min.Order) | Order Sample |
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Customization: |
Available
| Customized Request |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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Initial Payment Full Payment |
Currency: | US$ |
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Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Advancements in Tapered Roller Bearing Technology
Tapered roller bearing technology has undergone significant advancements over the years, driven by the demands of modern industrial applications and the pursuit of enhanced performance, efficiency, and durability. These advancements have led to innovations in design, materials, manufacturing processes, and lubrication. Here are some key insights into the advancements in tapered roller bearing technology:
- Advanced Bearing Materials:
Manufacturers are exploring new materials and alloy compositions to improve bearing strength, fatigue resistance, and high-temperature performance. Specialized coatings and surface treatments are applied to enhance corrosion resistance and reduce friction.
- Optimized Design and Geometry:
Modern design techniques, such as computer-aided modeling and simulation, allow for the optimization of bearing geometry and internal structures. This results in improved load distribution, reduced stress concentrations, and enhanced overall performance.
- Improved Cage Designs:
Cage designs have evolved to ensure better roller guidance, reduced friction, and minimized wear. Innovative cage materials and shapes enhance lubricant flow and promote efficient operation, especially at high speeds.
- Enhanced Lubrication Systems:
Advancements in lubrication technology have led to the development of specialized lubricants and lubrication systems. These solutions offer better protection against wear, reduce friction, and ensure consistent lubrication even in challenging operating conditions.
- Precision Manufacturing Techniques:
Modern manufacturing methods, such as precision grinding and superfinishing, allow for tighter tolerances and improved surface finishes. This contributes to smoother rolling contact, reduced vibration, and lower noise levels.
- Integrated Sensors and Monitoring:
Advances in sensor technology enable the integration of condition monitoring systems within tapered roller bearings. These sensors provide real-time data on factors like temperature, vibration, and lubrication, allowing for predictive maintenance and performance optimization.
- Customization and Application-Specific Solutions:
Manufacturers offer more customization options to cater to diverse industrial applications. This includes bearings optimized for specific operating conditions, load requirements, and environmental challenges.
- Digitalization and Industry 4.0:
The integration of tapered roller bearing data into digital platforms aligns with the principles of Industry 4.0. Remote monitoring, predictive analytics, and digital twins are used to enhance maintenance strategies and maximize bearing lifespan.
- Energy Efficiency Focus:
Advancements in tapered roller bearing technology align with global efforts to improve energy efficiency. Reduced friction, optimized designs, and efficient lubrication contribute to overall equipment energy savings.
- Sustainability and Eco-Friendly Solutions:
Manufacturers are exploring sustainable materials and manufacturing processes to reduce the environmental impact of bearing production. Eco-friendly lubricants and packaging solutions are also gaining attention.
Overall, advancements in tapered roller bearing technology continue to drive innovation across industries, providing solutions that meet the evolving needs of modern machinery and contribute to improved performance, reliability, and sustainability.
What is the impact of proper lubrication on the performance and lifespan of cylindrical roller bearings?
Proper lubrication plays a crucial role in the performance and lifespan of cylindrical roller bearings. Lubrication is essential for reducing friction, minimizing wear, dissipating heat, and preventing corrosion. Let’s explore the impact of proper lubrication in more detail:
- Friction Reduction:
Proper lubrication forms a thin film of lubricant between the rolling elements and raceways of cylindrical roller bearings. This lubricant film separates the surfaces and reduces direct metal-to-metal contact. As a result, friction and sliding resistance are significantly reduced. The reduction in friction helps to minimize energy loss, improve efficiency, and reduce wear on the bearing components.
- Wear Prevention:
Lubrication creates a protective barrier between the rolling elements and raceways, preventing excessive wear. The lubricant film prevents metal-to-metal contact and acts as a cushion, absorbing shock and distributing the load evenly. By reducing wear, proper lubrication helps to prolong the lifespan of cylindrical roller bearings, ensuring reliable performance over an extended period.
- Heat Dissipation:
During operation, cylindrical roller bearings generate heat due to friction. Proper lubrication helps dissipate this heat by carrying it away from the bearing surfaces. The lubricant absorbs and transfers the heat, preventing excessive temperature buildup that could lead to premature failure. Effective heat dissipation through proper lubrication helps maintain the bearing’s operational stability and prevents thermal damage.
- Prevention of Corrosion:
Lubrication acts as a protective layer, preventing the direct contact of moisture or contaminants with the bearing surfaces. This barrier helps to inhibit corrosion and the formation of rust on the bearing components. By keeping the surfaces clean and protected, proper lubrication aids in maintaining the integrity and longevity of cylindrical roller bearings, especially in challenging environments.
- Noise Reduction:
Proper lubrication contributes to reducing noise and vibration in cylindrical roller bearings. The lubricant film acts as a cushion, damping the vibrations and reducing the generation of noise during operation. This is particularly important in applications where noise reduction is critical, such as precision machinery or equipment operating in quiet environments.
- Contamination Control:
Proper lubrication helps in controlling and minimizing the ingress of contaminants into cylindrical roller bearings. The lubricant forms a barrier that helps prevent the entry of dirt, dust, and other particles that could lead to premature wear or damage. By maintaining cleanliness, proper lubrication enhances the overall performance and reliability of the bearing.
In summary, proper lubrication is essential for optimizing the performance and extending the lifespan of cylindrical roller bearings. It reduces friction, minimizes wear, dissipates heat, prevents corrosion, reduces noise, and controls contamination. Bearing manufacturers and operators must follow recommended lubrication practices, including selecting the appropriate lubricant type and viscosity, ensuring proper lubricant replenishment, and adhering to scheduled maintenance intervals, to maximize the benefits of lubrication and ensure the long-term reliability of cylindrical roller bearings.
What are cylindrical roller bearings, and how are they used in machinery?
Cylindrical roller bearings are a type of rolling element bearing that consists of cylindrical rollers held in place by a cage. They are designed to provide high radial load-carrying capacity and moderate thrust load-carrying capacity. Cylindrical roller bearings have a relatively high stiffness and can accommodate axial displacement between the inner and outer rings.
These bearings are commonly used in various machinery applications due to their specific characteristics and advantages:
- Radial Load Capacity:
Cylindrical roller bearings can withstand high radial loads, making them suitable for applications where the primary load is radial in nature. The cylindrical rollers distribute the load evenly along their length, reducing stress concentrations and improving load-carrying capacity. This characteristic allows cylindrical roller bearings to support heavy machinery components and handle substantial radial forces.
- Thrust Load Capacity:
While primarily designed for radial loads, cylindrical roller bearings can also accommodate moderate axial loads. The arrangement of the cylindrical rollers and their contact angle with the raceways enables these bearings to handle limited thrust loads. However, for applications with predominantly axial loads, other types of bearings, such as thrust bearings, may be more suitable.
- Design Variations:
Cylindrical roller bearings come in various design variations to meet specific application requirements. These variations include different cage designs, such as solid cages or cages made of polymer materials, which offer benefits such as reduced friction and improved lubrication. Additionally, cylindrical roller bearings can have different configurations of the inner and outer ring flanges, such as separable or integral designs, to facilitate installation and maintenance.
- High-Speed Capability:
Cylindrical roller bearings can operate at high speeds, depending on their design and internal clearance. Factors such as cage material, roller design, and lubrication play a role in determining the maximum allowable speed. Manufacturers provide speed ratings and guidelines to ensure proper selection and operation of cylindrical roller bearings within their speed limits.
- Application Versatility:
Cylindrical roller bearings find wide applications in various machinery and equipment. They are commonly used in rotating machinery, such as electric motors, gearboxes, pumps, and compressors. Cylindrical roller bearings are also utilized in industries such as automotive, aerospace, construction, and mining, where they support heavy loads and provide rotational motion in critical components.
- Alignment and Compensation:
Cylindrical roller bearings have the ability to accommodate slight misalignments between the inner and outer rings. This feature allows for easier installation and helps compensate for mounting errors or shaft deflections during operation. The axial displacement capability of cylindrical roller bearings can also assist in thermal expansion or contraction of the shaft and housing.
In summary, cylindrical roller bearings are a type of rolling element bearing that provides high radial load-carrying capacity and moderate thrust load-carrying capacity. They are used in machinery applications where heavy radial loads need to be supported. With their versatility, high-speed capability, and ability to accommodate misalignment, cylindrical roller bearings contribute to the efficient and reliable operation of various types of machinery.
editor by CX 2024-04-24