Product Description

SKF CZPT CZPT CZPT rolling bearings NJ414 cylindrical roller bearing


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

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.


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.

NO 4. OEM all brand bearing

 NO 5. Cylindrical roller bearing Specification: 

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
Package Tube package+outer carton+pallets;Single box+outer carton+pallets;
Tube packge+middle box+outer carton+pallets;According to your requirement

NO 6. Cylidrical Roller Bearing Models and Size:                    

NEW OLD d D B     NEW     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          
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          
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          
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          


  MODLE    SIZE(mm)  MODLE    SIZE(mm)
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          
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   NUP308 92308 40 90 23
RNU207 292207 72 17 RN308 557108 40 -23  
          RNU308 292308 90 23
N307 2307 35 80 21 NJ2308 42608 40 90 33
NF307 12307 35 80 21          
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          
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  
          RUN209 292209 85 19
N407 2407 35 100 25 NU2209 32509 45 85 23
NJ407 42407 35 100 25          
          N309 2309 45 100 25
N208 2208 40 80 18 NF309 12309 45 100 25
NF208 12208 40 80 18          


NO 7. Our Roller Bearing Factory:

NO 8. Our Roller Bearing Warehouse:

NO 9. Our Roller Bearing Packaging Box:

Why Choose Us:

  • We are an industrial and trading company.We have our own brand: SFNB .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
The Number of Rows: Single
Outer Dimension: Medium and Large(120-190mm)
Material: Bearing Steel
Spherical: Non-Aligning Bearings
Load Direction: Radial Bearing


Customized Request

tapered roller bearing

Can you Explain the Concept of Bearing Clearance in Tapered Roller Bearings?

Bearing clearance, also known as internal clearance, refers to the space or gap between the various components of a tapered roller bearing when it is not under load. This clearance exists to accommodate the thermal expansion of the bearing components, ensure proper lubrication, and prevent excessive interference during operation. Here’s how bearing clearance works in tapered roller bearings:

  • Thermal Expansion:

As tapered roller bearings operate, they generate heat due to friction and loading. This heat causes the bearing components, including the inner and outer rings, rollers, and cage, to expand. Bearing clearance provides the necessary space for these components to expand without causing binding or excessive load on the rolling elements.

  • Lubrication Film:

The lubricant within the bearing forms a thin film between the rolling elements and raceways. Bearing clearance ensures that the rolling elements can move smoothly within this lubrication film, reducing friction and wear.

  • Operating Conditions:

Bearing clearance affects the behavior of the bearing under different operating conditions. Excessive clearance can lead to vibration, noise, and reduced load-carrying capacity, while insufficient clearance may result in increased friction, heat generation, and premature failure.

  • Types of Clearance:

Tapered roller bearings can have various types of clearance, including radial clearance (between the rollers and raceways) and axial clearance (along the bearing axis). The choice of clearance depends on the application’s requirements and the desired balance between load capacity and internal stress.

  • Preload vs. Clearance:

Preload, which is the application of a controlled axial force, eliminates internal clearance and optimizes the distribution of load between rolling elements. In contrast, bearing clearance provides the necessary space for thermal expansion and lubrication, albeit at the cost of increased play.

  • Application-Specific Considerations:

The optimal bearing clearance varies depending on factors such as the application’s operating temperature, speed, and load magnitude. Engineers carefully select the appropriate clearance to ensure optimal bearing performance.

  • Measuring Clearance:

Bearing clearance can be measured using specialized instruments or techniques that assess the gap between components when the bearing is not under load.

Proper bearing clearance is crucial to maintaining optimal performance, minimizing wear, and preventing premature failure in tapered roller bearings. It is a critical factor that engineers consider when selecting and designing bearings for specific applications.

cylindrical roller bearing

Are there different cage materials commonly used in cylindrical roller bearings?

Yes, there are different cage materials commonly used in cylindrical roller bearings. The cage, also known as a retainer or separator, is a critical component that holds the cylindrical rollers in position and maintains their proper spacing. The choice of cage material depends on various factors such as application requirements, operating conditions, and the desired balance between strength, durability, and cost. Let’s explore some of the commonly used cage materials in cylindrical roller bearings:

  • Steel:

Steel cages are widely used in cylindrical roller bearings due to their excellent strength, durability, and wear resistance. Steel cages can withstand high operating temperatures and are suitable for applications with heavy loads and high-speed operation. The steel cages are typically made from low carbon steel, and in some cases, high-strength brass-coated steel or other alloyed steels are used for enhanced performance in demanding environments.

  • Brass:

Brass cages offer good strength, high corrosion resistance, and excellent heat dissipation properties. They are commonly used in cylindrical roller bearings for applications that require resistance to harsh operating conditions, such as high temperatures or corrosive environments. Brass cages are particularly suitable for slow to moderate speed applications where their excellent thermal conductivity can help dissipate heat effectively.

  • Polyamide (Nylon):

Polyamide cages, often referred to as nylon cages, are lightweight, corrosion-resistant, and have good wear properties. They offer low friction and allow for smooth rolling motion of the cylindrical rollers. Polyamide cages are commonly used in applications where reducing weight and inertia are important considerations, such as automotive and aerospace industries. They are also suitable for applications with moderate speeds and operating temperatures.

  • Phenolic Resin:

Phenolic resin cages are known for their high strength, low friction, and excellent dimensional stability. These cages provide good resistance to wear, chemicals, and heat. Phenolic resin cages are commonly used in high-speed cylindrical roller bearings where low cage weight and inertia are crucial for reducing friction and maintaining stable operation at high rotational speeds.

  • Other Materials:

In addition to the above-mentioned materials, other cage materials such as aluminum alloys, stainless steel, and engineered plastics may be used in specific applications. Aluminum alloy cages offer lightweight properties and good corrosion resistance, making them suitable for certain industries. Stainless steel cages provide high corrosion resistance and are used when the bearing operates in aggressive environments. Engineered plastics, such as PEEK (polyether ether ketone) or PTFE (polytetrafluoroethylene), are used for their self-lubricating properties, chemical resistance, and low friction characteristics.

The choice of cage material depends on factors such as load, speed, temperature, lubrication, and environmental conditions. Bearing manufacturers carefully select the appropriate cage material to ensure optimal performance, longevity, and reliability of the cylindrical roller bearing in a specific application.

cylindrical roller bearing

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.

China Standard CZPT CZPT CZPT CZPT Rolling Bearings Nj414 Cylindrical Roller Bearing   bearing blockChina Standard CZPT CZPT CZPT CZPT Rolling Bearings Nj414 Cylindrical Roller Bearing   bearing block
editor by CX 2024-04-12