Product Description
SKF CZPT L25-5A Cylindrical Roller 25x80x21mm Bearing
NO 1. OUR ADVANTAGES:
1. 14 years bearing products manufacturing and exporting experiences.
2. OEM order and non-standard bearing order can be accepted.
3. Many sizes of bearing are available. Large quantity bearing can be provided.
4. To respect customers, you can choose the loading port.
5. A certain number of free sample can be provide to support our customer’s after-sale services and warranty.
NO 2. Feature: Cylindrical roller bearing
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Single row cylindrical roller bearing feature:
Tape NU and type N allow shaft moving in axial direction within limits,applicable to use as free end.
Type NJ and type NF can carry certain extent one-way axial load.Type NUP and type NH can carry certain extent both-way axial load.
Main dimension of type E cylindrical roller bearing coordinate with standard, and through modifying interior specification to increase nominal load.
Double row cylindrical roller bearing feature:
Double row cylindrical roller bearing have cylindrical hole and tapered hole type,tapered bore bearing can get needed internal clearance by self-aligning the depth of thrusting in.
Besides,there are bearing whose outer ring with oil hole and oil tank,it’s nominal type code has a post position assistant code “W”.
The type bearing has strong fixity resisting reversal load,mainly applicable to chief shaft of machine tool,etc.
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NO 3. Types of Cylindrical roller bearing
 N series cylindrical roller bearing design The inner ring has 2 integral flanges and the outer ring is without flanges. Axial displacement of the shaft with respect to the housing can be accommodated in both directions within the bearing itself. The bearings are therefore used as non-locating bearings.
 NU series cylindrical roller bearing design The outer ring of bearings of the NU design has 2 integral flanges and the inner ring is without flanges. Axial displacement of the shaft with respect to the housing can be accommodated in both directions within the bearing itself.
 NJ series cylindrical roller bearing design The outer ring has 2 integral flanges and the inner ring 1 integral flange. The bearings are therefore suitable for the axial location of a shaft in 1 direction.
 NF series cylindrical roller bearing design The outer ring has 1 integral flange and the inner ring 2 integral flanges.
 NP series cylindrical roller bearing design The outer ring has 1 integral flange and 1 non-integral flange in the form of a loose flange ring and the inner ring 2 integral flanges.
 NUP series cylindrical roller bearing design The outer ring has 2 integral flanges and the inner ring 1 integral flange and 1 non-integral flange in the form of a loose flange ring. The bearings can be used as locating bearings, i.e. they can provide axial location for a shaft in both directions.
 RN series cylindrical roller bearing design No outer ring and the inner ring 2 integral flanges.
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NO 4. OEM all brand bearing
 NO 5. Cylindrical roller bearing
Seals Types | OPEN |
Vibration Level | Z1V1,Z2V2,Z3V3 |
Clearance | C2,C0,C3,C4,C5 |
Tolerance Codes | ABEC-1,ABEC-3,ABEC-5 |
Materral | GCr15-China/AISI52100-USA/Din100Cr6-Germany |
MOQ | 1Set at least |
Delivery Time | 5-15 days after contract |
Payment Terms | TT/PAPAL/WESTERN UNION |
Package | Tube package+outer carton+pallets;Single box+outer carton+pallets; Tube packge+middle box+outer carton+pallets;According to your requirement |
NO 6. Model:Â Cylidrical Roller Bearing Models and Size:Â Â Â Â Â Â Â Â Â Â Â Â
 MODEL |  SIZE(mm) | MODEL |  SIZE(mm) | ||||||
NEW | OLD | d | D | B | Â Â NEW | Â Â OLD | d | D | B |
N202 | 2202 | 15 | 35 | 11 | NUP205 | 92205 | 25 | 52 | 15 |
NF202 | 12202 | 15 | 35 | 11 | RN205 | 557105 | 25 | – | 15 |
NU202 | 32202 | 15 | 35 | 11 | RNU205 | 292205 | – | 52 | 15 |
NJ202 | 42202 | 15 | 35 | 11 | N2205 | 2505 | 25 | 52 | 18 |
RN202 | 557102 | 15 | – | 11 | N2205 | 2505 | 25 | 52 | 18 |
RNU202 | 292202 | – | 35 | 11 | NUP2205NV | E192505K | 25 | 52 | 18 |
N203 | 2203 | 17 | 40 | 12 | LRN605/YA | 922205 | – | 52 | 15 |
NF203 | 12203 | 17 | 40 | 12 | Â | Â | Â | Â | Â |
NU203 | 32203 | 17 | 40 | 12 | N305 | 2305 | 25 | 62 | 17 |
NJ203 | 42203 | 17 | 40 | 12 | NU305 | 32305 | 25 | 62 | 17 |
RN203 | 557103 | 17 | – | 12 | NJ305 | 42305 | 25 | 62 | 17 |
RNU203 | 292203 | – | 40 | 12 | NUP305 | 92305 | 25 | 62 | 17 |
N204 | 2204 | 20 | 47 | 14 | RN305 | 557105 | 25 | – | 17 |
NF204 | 12204 | 20 | 47 | 14 | NF305 | 12305 | 25 | 62 | 17 |
NU204 | 32204 | 20 | 47 | 14 | RNU305 | 292305 | – | 62 | 17 |
NJ204 | 42204 | 20 | 47 | 14 | NCL2305 | 102605 | 25 | 62 | 24 |
NUP204 | 92204 | 20 | 47 | 14 | Â | Â | Â | Â | Â |
RN204 | 557104 | 20 | – | 14 | N206 | 2206 | 30 | 62 | 16 |
RNU204 | 292204 | – | 47 | 14 | NF206 | 12206 | 30 | 62 | 16 |
RN-V604ENV/P6 | E392704K | – | 55 | 20 | NU206 | 32206 | 30 | 62 | 16 |
 |  |  |  |  | NJ206 | 42206 | 30 | 62 | 16 |
N304 | 2304 | 20 | 52 | 15 | NUP206 | 92206 | 30 | 62 | 16 |
NF304 | 12304 | 20 | 52 | 15 | RN206 | 557106 | 30 | – | 16 |
NU304 | 32304 | 20 | 52 | 15 | RUN206 | 292206 | – | 62 | 16 |
NJ304 | 42304 | 20 | 52 | 15 | NCL206 | 157106 | 30 | 62 | 16 |
NUP304 | 92304 | 20 | 52 | 15 | Â | Â | Â | Â | Â |
RN304 | 557104 | 20 | – | 15 | N306 | 2306 | 30 | 72 | 19 |
RNU304 | 292304 | – | 52 | 15 | NF306 | 12306 | 30 | 72 | 19 |
 |  |  |  |  | NU306 | 32306 | 30 | 72 | 19 |
N205 | 2205 | 25 | 52 | 15 | NJ306 | 42306 | 30 | 72 | 19 |
NF205 | 12205 | 25 | 52 | 15 | NUP306 | 92306 | 30 | 72 | 19 |
NU205 | 32205 | 25 | 52 | 15 | RN306 | 557106 | 30 | – | 19 |
NJ205 | 42205 | 25 | 52 | 15 | Â | Â | Â | Â | Â |
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  MODLE |   SIZE(mm) |  MODLE |   SIZE(mm) | ||||||
NEW | OLD | d | D | B | NEW | OLD | d | D | B |
RNU306 | 292306 | – | 72 | 19 | NU208 | 32208 | 40 | 80 | 18 |
NCL306 | 157106 | 30 | 72 | 19 | NJ208 | 42208 | 40 | 80 | 18 |
NCL2206*2 | 157106 | 30 | 62 | 19 | NUP208 | 92208 | 40 | 80 | 18 |
 |  |  |  |  | RN208 | 557108 | 40 | -18 |  |
N406 | 2406 | 30 | 90 | 23 | RNU208 | 292208 | – | 80 | 18 |
NJ406 | 42406 | 30 | 90 | 23 | N2208 | 2508 | 40 | 80 | 23 |
 |  |  |  |  | NF2208 | 12508 | 40 | 80 | 23 |
NU1007 | 32107 | 35 | 62 | 14 | N2208 | 2508 | 40 | 80 | 23 |
N207 | 2207 | 35 | 72 | 17 | Â | Â | Â | Â | Â |
NF207 | 12207 | 35 | 72 | 17 | N308 | 2308 | 40 | 90 | 23 |
NU207 | 32207 | 35 | 72 | 17 | NF308 | 12308 | 40 | 90 | 23 |
NJ207 | 42207 | 35 | 72 | 17 | NU308 | 32308 | 40 | 90 | 23 |
NUP207 | 92207 | 35 | 72 | 17 | NJ308 | 42308 | 40 | 90 | 23 |
RN207 | 557107 | 35 | – | Â | NUP308 | 92308 | 40 | 90 | 23 |
RNU207 | 292207 | – | 72 | 17 | RN308 | 557108 | 40 | -23 | Â |
 |  |  |  |  | RNU308 | 292308 | – | 90 | 23 |
N307 | 2307 | 35 | 80 | 21 | NJ2308 | 42608 | 40 | 90 | 33 |
NF307 | 12307 | 35 | 80 | 21 | Â | Â | Â | Â | Â |
NU307 | 32307 | 35 | 80 | 21 | N408 | 2408 | 40 | 110 | 27 |
NJ307 | 42307 | 35 | 80 | 21 | NJ408 | 42408 | 40 | 110 | 27 |
NUP307 | 92307 | 35 | 80 | 21 | Â | Â | Â | Â | Â |
RN307 | 557107 | 35 | – | 21 | N209 | 2209 | 45 | 85 | 19 |
RNU307 | 292307 | – | 80 | 21 | NF209 | 12209 | 45 | 85 | 19 |
NCL307 | 157107 | 35 | 80 | 21 | NU209 | 32209 | 45 | 85 | 19 |
NU2307 | 32607 | 35 | 80 | 31 | NJ209 | 42209 | 45 | 85 | 19 |
NJ2307 | 42607 | 35 | 80 | 31 | NUP209 | 92209 | 45 | 85 | 19 |
NUP2307 | 92607 | 35 | 80 | 31 | RN209 | 557109 | 45 | -19 | Â |
 |  |  |  |  | RUN209 | 292209 | – | 85 | 19 |
N407 | 2407 | 35 | 100 | 25 | NU2209 | 32509 | 45 | 85 | 23 |
NJ407 | 42407 | 35 | 100 | 25 | Â | Â | Â | Â | Â |
 |  |  |  |  | N309 | 2309 | 45 | 100 | 25 |
N208 | 2208 | 40 | 80 | 18 | NF309 | 12309 | 45 | 100 | 25 |
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NO 7. Our Roller Bearing Factory:
NO 8. Our Roller Bearing Warehouse:
Why Choose Us:
- We are an industrial and trading company.We have our own brand:Â SFNBÂ .If you interested in our product,I can take you to visit our factory.
- Our factory have advanced testing equipment,before the every product leave the factory,we will be testing.We can send samples to you,you can test the quality,and if you accept the sample quality,we can promise: the follow-up orders’ quality will be the same as samples.
- About ordinary standard type of bearing ,We have rich inventory,not have MOQ,if your need a product is Non-standard size,need customize,we will according the product size to determine the MOQ.
- Our company can accept OEM,you can send sample to me,we can manufacturing products the same as sample.Meanwhile,we also can accept some well-known brands of OEM,
- If the amount of money is less,you can pay it by Paypal .Of course you can payment by TT or Western Union etc.
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Rolling Body: | Roller Bearings |
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The Number of Rows: | Single |
Outer Dimension: | Small and Medium-Sized (60-115mm) |
Material: | Bearing Steel |
Spherical: | Non-Aligning Bearings |
Load Direction: | Radial Bearing |
Customization: |
Available
| Customized Request |
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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.
Can you provide examples of industries or equipment that frequently use cylindrical roller bearings?
Cylindrical roller bearings are widely used in various industries and equipment where rotational motion is involved. Their design and characteristics make them suitable for numerous applications that require high radial load capacity, moderate axial load capacity, and the ability to accommodate misalignment. Let’s explore some examples of industries and equipment that frequently utilize cylindrical roller bearings:
- Automotive Industry:
The automotive industry extensively uses cylindrical roller bearings in various components such as wheel hubs, transmissions, engines, steering systems, and differentials. These bearings provide support for rotating shafts and help withstand radial loads encountered during vehicle operation. They contribute to the smooth and efficient functioning of critical automotive systems.
- Mining and Construction:
In the mining and construction sectors, cylindrical roller bearings are crucial for heavy-duty applications. They are commonly found in equipment such as conveyor systems, crushers, pulverizers, excavators, and loaders. These bearings are designed to handle high radial loads and provide reliable performance in demanding environments characterized by dust, dirt, and heavy vibrations.
- Power Generation:
Cylindrical roller bearings are extensively used in power generation equipment, including turbines, generators, and electric motors. They play a vital role in supporting rotating shafts and providing smooth operation under high-speed and high-temperature conditions. These bearings are designed to handle significant radial loads, ensuring reliable and efficient power generation.
- Steel and Metal Processing:
The steel and metal processing industry relies on cylindrical roller bearings in various applications, including rolling mills, continuous casting machines, and metal cutting equipment. These bearings are capable of withstanding heavy loads, high temperatures, and harsh operating conditions encountered in metal processing operations.
- Pulp and Paper:
In the pulp and paper industry, cylindrical roller bearings are found in paper machines, rollers, and rotary kilns. They provide support for rotating drums, rolls, and shafts, ensuring smooth and reliable operation during the paper production process. These bearings are designed to withstand the high loads and continuous operation associated with paper manufacturing.
- Machine Tools:
Cylindrical roller bearings are widely used in machine tools such as lathes, milling machines, grinders, and machining centers. They provide precise support for rotating spindles and shafts, enabling accurate and efficient metal cutting operations. These bearings contribute to the precision and reliability required in the machining industry.
- Textile Machinery:
The textile industry utilizes cylindrical roller bearings in various textile machinery, including spinning frames, looms, and winding machines. These bearings support rotating components and help maintain the tension and smooth movement of yarns and fibers during the textile production process. They are designed to withstand high speeds and provide reliable performance in textile manufacturing operations.
These are just a few examples of industries and equipment that frequently rely on cylindrical roller bearings. Their versatility, load-carrying capacity, and ability to operate in diverse environments make them suitable for a wide range of applications across numerous sectors.
How do cylindrical roller bearings differ from other types of roller bearings?
Cylindrical roller bearings possess distinct characteristics that set them apart from other types of roller bearings. Let’s examine the key differences between cylindrical roller bearings and other common roller bearing types:
- Design and Structure:
Cylindrical roller bearings feature cylindrical rollers that have a high length-to-diameter ratio. This design allows them to accommodate high radial loads and moderate thrust loads. In contrast, other types of roller bearings, such as spherical roller bearings or tapered roller bearings, have different roller shapes and configurations tailored for specific load and application requirements.
- Load Capacity:
Cylindrical roller bearings excel in handling radial loads. Their cylindrical roller arrangement and large contact area with the raceways enable them to distribute loads evenly along the rollers’ length. This characteristic makes cylindrical roller bearings suitable for applications where the primary load is radial. In comparison, other roller bearing types may be better suited for applications with different load orientations or combinations of radial and axial loads.
- Thrust Load Capability:
While cylindrical roller bearings can accommodate moderate axial loads, they are primarily designed for radial load-carrying capacity. On the other hand, thrust roller bearings, such as spherical roller thrust bearings or tapered roller thrust bearings, are specifically designed to handle predominantly axial loads. These thrust bearings have different roller arrangements and structures optimized for axial load resistance.
- Internal Clearance:
Cylindrical roller bearings offer a range of internal clearances, which is the space between the rolling elements and raceways when no external load is applied. The internal clearance affects factors such as running accuracy, thermal expansion, and the ability to accommodate misalignment or axial displacement. In contrast, other roller bearing types may have different clearance options or incorporate specific features, such as preloading, to optimize performance in their respective applications.
- Application Diversity:
Cylindrical roller bearings find extensive use in various machinery applications, including electric motors, gearboxes, pumps, and compressors. However, other roller bearing types have their own advantages and are commonly employed in specific industries or applications. For instance, needle roller bearings are suitable for applications with limited radial space, while crossed roller bearings are commonly used in precision machinery that requires high positioning accuracy.
- Operating Speed:
Cylindrical roller bearings can operate at high speeds, depending on their design and internal clearance. Manufacturers provide speed ratings and guidelines to ensure proper selection and operation within the bearing’s speed limits. Other roller bearing types may have different speed capabilities based on their specific design features, such as the shape of the rollers, cage design, or lubrication requirements.
Understanding the differences between cylindrical roller bearings and other types of roller bearings is crucial for selecting the appropriate bearing for a given application. Factors such as load requirements, load orientation, speed, space limitations, and environmental conditions should be carefully considered to ensure optimal bearing performance and longevity.
editor by CX 2024-04-26