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China Auto Bearing,Gearbox Bearing,Cylindrical Roller Bearing,N312,2312,Nu312,32312,Nj312,42312,NF312,12312,Ncl312,102312,Nup312,192312,Rn312,502312,Rnu312,292312, supplier

by | Dec 2, 2022 | Uncategorized

Product Description

Cylindrical roller bearings are available in a wide range of designs, series, variants and sizes. The main design differences are the number of roller rows and the inner/outer ring flanges as well as cage designs and materials.

The bearings can meet the challenges of applications faced with heavy radial loads and high speeds. Accommodating axial displacement (except for bearings with flanges on both the inner and outer rings), they offer high stiffness, low friction and long service life. 

Cylindrical roller bearings are also available in sealed or split designs. In sealed bearings, the rollers are protected from contaminants, water and dust, while providing lubricant retention and contaminant exclusion. This provides lower friction and longer service life. Split bearings are intended primarily for bearing arrangements which are difficult to access, such as crank shafts, where they simplify maintenance and replacements. 

Features and benefits

  • High load carrying capacity
  • High stiffness
  • Accommodate axial displacement 
    Except for bearings with flanges on both the inner and outer rings.
  • Low friction
    The open flange design, 
  • Together with the roller end design and surface finish, promote lubricant film formation resulting in lower friction and higher axial load carrying capability.
  • Long service life
    The logarithmic roller profile reduces edge stresses at the roller/raceway contact  and sensitivity to misalignment and shaft deflection.
  • Enhanced operational reliability
    The surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film.
  • Separable and interchangeable
    The separable components of cylindrical roller bearings are interchangeable. This facilitates mounting and dismounting, as well as maintenance inspections.

Applications

Cylindrical roller bearings have characteristics that make them suitable for use in many types of industrial applications and essential for some. They can be used in both locating and non-locating bearing positions in bearing arrangements in for example:

  • Stationary gearboxes
  • Automotive gearboxes
  • Electric motors
  • Vibration motors
  • Wind turbines
  • Off-highway equipment
  • Pumps and compressors
  • Material handling equipment
  • Textile machinery
  • Rail vehicles
  • Rolling mills

 

Types NU, N, NNU, and NN are suitable as free-end bearings. 
Types NJ and NF can sustain limited axial loads in 1 direction.
Types NH and NUP can be used as fixed-end bearings.
NH-type cylindrical roller bearings consist of the NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars.
The inner ring loose rib of an NUP-type cylindrical roller bearing should be mounted so that the marked side is on the outside.
 

Parameters of Bearing
Model d D B Cr Cor Limiting Speed (r/min) Mass
(mm) (mm) (mm) (kN) (kN) Grease Oil (kg)
NU202 15 35 11 7.98 5.5 15000 19000 –
NU203 17 40 12 9.12 7 14000 18000 –
NU303 17 47 14 12.8 10.8 13000 17000 0.147
NU1004 20 42 12 10.5 9.2 13000 17000 0.09
NU204E 20 47 14 25.8 24 12000 16000 0.117
NU2204E 20 47 18 30.8 30 12000 16000 0.149
NU3O4E 20 52 15 29 25.5 11000 15000 0.155
NU2304E 20 52 21 39.2 37.5 10000 14000 0.216
NU1005 25 47 12 11 10.2 11000 15000 0.1
NU205E 25 52 15 27.5 26.8 11000 14000 0.14
NU2205E 25 52 18 32.8 33.8 11000 14000 0.168
NU305E 25 62 17 38.5 35.8 9000 12000 0.251
NU2305E 25 62 24 53.2 54.5 9000 12000 0.355
NU1006 30 55 13 13 12.8 9500 12000 0.12
NU206E 30 62 16 36 35.5 8500 11000 0.214
NU2206E 30 62 20 45.5 48 8500 11000 0.268
NU306E 30 72 19 49.2 48.2 8000 10000 0.377
NU2306E 30 72 27 70 75.5 8000 10000 0.538
NU406 30 90 23 57.2 53 7000 9000 0.73
NU1007 35 62 14 19.5 18.8 8500 11000 0.16
NU207E 35 72 17 46.5 48 7500 9500 0.311
NU2207E 35 72 23 57.5 63 7500 9500 0.414
NU307E 35 80 21 62 63.2 7000 9000 0.501
NU2307E 35 80 31 87.5 98.2 7000 9000 0.738
NU407 35 100 25 70.8 68.2 6000 7500 0.94
NU1008 40 68 15 21.2 22 7500 9500 0.22
NU208E 40 80 18 51.5 53 7000 9000 0.394
NU2208E 40 80 23 67.5 75.2 7000 9000 0.507
NU308E 40 90 23 76.8 77.8 6300 8000 0.68
NU2308E 40 90 33 105 118 6300 8000 0.974
NU408 40 110 27 90.5 89.8 5600 7000 1.25
NU1009 45 75 16 23.2 23.8 6500 8500 0.26
NU209E 45 85 19 58.5 63.8 6300 8000 0.45
NU2209E 45 85 23 71 82 6300 8000 0.55
NU309E 45 100 25 93 98 5600 7000 0.93
NU2309E 45 100 36 130 152 5600 7000 1.34
NU400 45 120 29 102 100 5000 6300 1.8
NU1571 50 80 16 25 27.5 6300 8000 –
NU210E 50 90 20 61.2 69.2 6000 7500 0.505
NU2210E 50 90 23 74.2 88.8 6000 7500 0.59
NU310E 50 110 27 105 112 5300 6700 1.2
NU2310E 50 110 40 155 185 5300 6700 1.79
NU410 50 130 31 120 120 4800 6000 2.3
NU1011 55 90 18 35.8 40 5600 7000 0.45
NU211E 55 100 21 80.2 95.5 5300 6700 0.68
NU2211E 55 100 25 94.8 118 5300 6700 0.81
NU311E 55 120 29 128 138 4800 6000 1.53
NU2311E 55 120 43 190 228 4800 6000 2.28
NU411 55 140 33 128 132 4300 5300 2.8
NU1012 60 95 18 38.5 45 5300 6700 0.48
NU212E 60 110 22 89.8 102 5000 6300 0.86
NU2212E 60 110 28 122 152 5000 6300 1.12
NU312E 60 130 31 142 155 4500 5600 1.87
NU2312E 60 130 46 212 260 4500 5600 2.81
NU412 60 150 35 155 162 4000 5000 3.4

SAMPLES
1. Samples quantity: 1-10 PCS are available.
2. Free samples: It depends on the Model No., material and quantity. Some of the bearings samples need client to pay samples charge and shipping cost.
3. It’s better to start your order with Trade Assurance to get full protection for your samples order.

CUSTOMIZED
The customized LOGO or drawing is acceptable for us.

MOQ
1. MOQ: 10 PCS standard bearings.
2. MOQ: 1000 PCS customized your brand bearings.

OEM POLICY
1. We can printing your brand (logo, artwork)on the shield or laser engraving your brand on the shield.
2. We can custom your packaging according to your design
3. All copyright own by clients and we promised don’t disclose any info.

 

 

 

US $0.5-60
/ Set
| 		1 Set

(Min. Order)

###

Shipping Cost:

Estimated freight per unit.

To be negotiated|


Freight Cost Calculator

###

Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Small (28-55mm)

###

Samples:
US$ 1/Set
1 Set(Min.Order)

|

Order Sample

###

Customization:
Available

|

Customized Request

###

Parameters of Bearing
Model d D B Cr Cor Limiting Speed (r/min) Mass
(mm) (mm) (mm) (kN) (kN) Grease Oil (kg)
NU202 15 35 11 7.98 5.5 15000 19000 –
NU203 17 40 12 9.12 7 14000 18000 –
NU303 17 47 14 12.8 10.8 13000 17000 0.147
NU1004 20 42 12 10.5 9.2 13000 17000 0.09
NU204E 20 47 14 25.8 24 12000 16000 0.117
NU2204E 20 47 18 30.8 30 12000 16000 0.149
NU3O4E 20 52 15 29 25.5 11000 15000 0.155
NU2304E 20 52 21 39.2 37.5 10000 14000 0.216
NU1005 25 47 12 11 10.2 11000 15000 0.1
NU205E 25 52 15 27.5 26.8 11000 14000 0.14
NU2205E 25 52 18 32.8 33.8 11000 14000 0.168
NU305E 25 62 17 38.5 35.8 9000 12000 0.251
NU2305E 25 62 24 53.2 54.5 9000 12000 0.355
NU1006 30 55 13 13 12.8 9500 12000 0.12
NU206E 30 62 16 36 35.5 8500 11000 0.214
NU2206E 30 62 20 45.5 48 8500 11000 0.268
NU306E 30 72 19 49.2 48.2 8000 10000 0.377
NU2306E 30 72 27 70 75.5 8000 10000 0.538
NU406 30 90 23 57.2 53 7000 9000 0.73
NU1007 35 62 14 19.5 18.8 8500 11000 0.16
NU207E 35 72 17 46.5 48 7500 9500 0.311
NU2207E 35 72 23 57.5 63 7500 9500 0.414
NU307E 35 80 21 62 63.2 7000 9000 0.501
NU2307E 35 80 31 87.5 98.2 7000 9000 0.738
NU407 35 100 25 70.8 68.2 6000 7500 0.94
NU1008 40 68 15 21.2 22 7500 9500 0.22
NU208E 40 80 18 51.5 53 7000 9000 0.394
NU2208E 40 80 23 67.5 75.2 7000 9000 0.507
NU308E 40 90 23 76.8 77.8 6300 8000 0.68
NU2308E 40 90 33 105 118 6300 8000 0.974
NU408 40 110 27 90.5 89.8 5600 7000 1.25
NU1009 45 75 16 23.2 23.8 6500 8500 0.26
NU209E 45 85 19 58.5 63.8 6300 8000 0.45
NU2209E 45 85 23 71 82 6300 8000 0.55
NU309E 45 100 25 93 98 5600 7000 0.93
NU2309E 45 100 36 130 152 5600 7000 1.34
NU400 45 120 29 102 100 5000 6300 1.8
NU1010 50 80 16 25 27.5 6300 8000 –
NU210E 50 90 20 61.2 69.2 6000 7500 0.505
NU2210E 50 90 23 74.2 88.8 6000 7500 0.59
NU310E 50 110 27 105 112 5300 6700 1.2
NU2310E 50 110 40 155 185 5300 6700 1.79
NU410 50 130 31 120 120 4800 6000 2.3
NU1011 55 90 18 35.8 40 5600 7000 0.45
NU211E 55 100 21 80.2 95.5 5300 6700 0.68
NU2211E 55 100 25 94.8 118 5300 6700 0.81
NU311E 55 120 29 128 138 4800 6000 1.53
NU2311E 55 120 43 190 228 4800 6000 2.28
NU411 55 140 33 128 132 4300 5300 2.8
NU1012 60 95 18 38.5 45 5300 6700 0.48
NU212E 60 110 22 89.8 102 5000 6300 0.86
NU2212E 60 110 28 122 152 5000 6300 1.12
NU312E 60 130 31 142 155 4500 5600 1.87
NU2312E 60 130 46 212 260 4500 5600 2.81
NU412 60 150 35 155 162 4000 5000 3.4
US $0.5-60
/ Set
| 		1 Set

(Min. Order)

###

Shipping Cost:

Estimated freight per unit.

To be negotiated|


Freight Cost Calculator

###

Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Small (28-55mm)

###

Samples:
US$ 1/Set
1 Set(Min.Order)

|

Order Sample

###

Customization:
Available

|

Customized Request

###

Parameters of Bearing
Model d D B Cr Cor Limiting Speed (r/min) Mass
(mm) (mm) (mm) (kN) (kN) Grease Oil (kg)
NU202 15 35 11 7.98 5.5 15000 19000 –
NU203 17 40 12 9.12 7 14000 18000 –
NU303 17 47 14 12.8 10.8 13000 17000 0.147
NU1004 20 42 12 10.5 9.2 13000 17000 0.09
NU204E 20 47 14 25.8 24 12000 16000 0.117
NU2204E 20 47 18 30.8 30 12000 16000 0.149
NU3O4E 20 52 15 29 25.5 11000 15000 0.155
NU2304E 20 52 21 39.2 37.5 10000 14000 0.216
NU1005 25 47 12 11 10.2 11000 15000 0.1
NU205E 25 52 15 27.5 26.8 11000 14000 0.14
NU2205E 25 52 18 32.8 33.8 11000 14000 0.168
NU305E 25 62 17 38.5 35.8 9000 12000 0.251
NU2305E 25 62 24 53.2 54.5 9000 12000 0.355
NU1006 30 55 13 13 12.8 9500 12000 0.12
NU206E 30 62 16 36 35.5 8500 11000 0.214
NU2206E 30 62 20 45.5 48 8500 11000 0.268
NU306E 30 72 19 49.2 48.2 8000 10000 0.377
NU2306E 30 72 27 70 75.5 8000 10000 0.538
NU406 30 90 23 57.2 53 7000 9000 0.73
NU1007 35 62 14 19.5 18.8 8500 11000 0.16
NU207E 35 72 17 46.5 48 7500 9500 0.311
NU2207E 35 72 23 57.5 63 7500 9500 0.414
NU307E 35 80 21 62 63.2 7000 9000 0.501
NU2307E 35 80 31 87.5 98.2 7000 9000 0.738
NU407 35 100 25 70.8 68.2 6000 7500 0.94
NU1008 40 68 15 21.2 22 7500 9500 0.22
NU208E 40 80 18 51.5 53 7000 9000 0.394
NU2208E 40 80 23 67.5 75.2 7000 9000 0.507
NU308E 40 90 23 76.8 77.8 6300 8000 0.68
NU2308E 40 90 33 105 118 6300 8000 0.974
NU408 40 110 27 90.5 89.8 5600 7000 1.25
NU1009 45 75 16 23.2 23.8 6500 8500 0.26
NU209E 45 85 19 58.5 63.8 6300 8000 0.45
NU2209E 45 85 23 71 82 6300 8000 0.55
NU309E 45 100 25 93 98 5600 7000 0.93
NU2309E 45 100 36 130 152 5600 7000 1.34
NU400 45 120 29 102 100 5000 6300 1.8
NU1010 50 80 16 25 27.5 6300 8000 –
NU210E 50 90 20 61.2 69.2 6000 7500 0.505
NU2210E 50 90 23 74.2 88.8 6000 7500 0.59
NU310E 50 110 27 105 112 5300 6700 1.2
NU2310E 50 110 40 155 185 5300 6700 1.79
NU410 50 130 31 120 120 4800 6000 2.3
NU1011 55 90 18 35.8 40 5600 7000 0.45
NU211E 55 100 21 80.2 95.5 5300 6700 0.68
NU2211E 55 100 25 94.8 118 5300 6700 0.81
NU311E 55 120 29 128 138 4800 6000 1.53
NU2311E 55 120 43 190 228 4800 6000 2.28
NU411 55 140 33 128 132 4300 5300 2.8
NU1012 60 95 18 38.5 45 5300 6700 0.48
NU212E 60 110 22 89.8 102 5000 6300 0.86
NU2212E 60 110 28 122 152 5000 6300 1.12
NU312E 60 130 31 142 155 4500 5600 1.87
NU2312E 60 130 46 212 260 4500 5600 2.81
NU412 60 150 35 155 162 4000 5000 3.4

Understanding the Different Types of Bearings

When you are looking for a bearing, you have many options to choose from. This article will explain the various types, functions, and working principles of different types of bearings. Once you understand the basic components, you can make an informed decision about which one to buy. Here’s an overview of some of the most common types. Learn more about each type below! Read on to learn about the differences between these different types of bearings! Posted in Articles

Functions

bearing
Bearings serve as an integral part of a mechanical device. These devices help transfer torque from one part of a structure to another. These mechanisms increase the efficiency of a shaft by increasing its life. However, the functions of bearings depend on the application of the structure. Among other functions, bearings provide support to shafts. Anti-friction bearings come in two types: ball and roller bearings. These components have line and point contact, which is the most common type. Archimedes’s principle states that the force is equal to the weight of the fluid that is being displaced. Bearings can transfer lateral loads to a substructure.
A bearing has two primary functions. The first is to prevent direct metal-to-metal contact. A bearing prevents friction, heat generation, and wear and tear of components. A bearing also reduces energy consumption. Its other purpose is to guide and support a rotating body. In addition to these functions, bearings can also reduce wear and tear on a machine. As a result, they are among the most widely used machines in the world.
Seals are a major component of a bearing. They prevent foreign materials from entering and lubricating the moving parts. The design of seal lips determines their effectiveness. Fuel economy regulations and CO2 emissions regulations are pushing the demand for low-friction bearings. However, high-performance seals do not always provide high-performance. As a result, current estimations of the friction in bearings depend on trial and error methods.
Another important function of bearings is that they transfer the load of a rotating component to its housing. This load can be axial or radial. Bearings also limit movement to predefined directions. Some types of rolling element bearings have balls or cylinders inside. These bearings are less frictional than sliding ones, thus they allow parts to move freely during rotation. These parts can then be used for various applications. So, bearings are an integral part of machines.

Types

The most common type of bearing is a plain bearing. It uses surfaces in rubbing contact to transmit movement from one part to another. These bearings may be discrete or may consist of a hole in a metal sleeve or a planar surface bearing another part. Some plain bearings are flanged, while others are made of a sleeve with a flange at one end. These bearings often give acceptable accuracy and life, but they are expensive and cannot be used in large scale applications.
Radial bearings are used when there is a need for high-speed or corrosive parts. This type of bearing also serves as a support in an intermediate situation. Its two components are called the base and the cover. The base and cover are connected and are arranged parallel to the main axis. This type of bearing is used in steady-state and axial motion applications. The radial bearings are also used when the shafts are long.
Angular contact bearings are another type of bearing. These are easy to install and require minimal maintenance. Their races are displaced along the axis. They are also better at handling axial loads and transferring them to the housing. These types of bearings are commonly used in pumps, automobiles, and high-speed applications. If you are looking for an affordable, reliable bearing, look no further than the angular contact bearing.
Another type of bearing is a self-lubricating bushing. These are lightweight and wear-resistant. Unlike the other types of bearing, they do not require any lubrication or maintenance. In fact, some are completely maintenance-free. But if you’re worried about maintenance, this type of bearing may be a good choice. There are many benefits of using self-lubricating bushings. It is also a good option for applications where your machine is exposed to extreme temperatures.

Working principle

bearing
A bearing has two primary functions: support and load transfer. In engineering applications, the bearing tends to push the load in the direction of the shaft. A radial load pushes the bearing downward and a thrust load pushes it sideways. Both types of load transfer are important in a variety of applications. The working principle of each type is described below. Listed below are the main uses for each type of bearing.
A plain bearing uses a PTFE liner on the interface of two moving parts. The PTFE liner acts as a lubricant and may be filtered to alter its friction. The journal bearing uses the motion of the journal to force fluid into the gap between two moving parts. This results in a small amount of play in the bearing. This play is acceptable for most applications. A ball bearing may have a maximum play of 2 mm for a ten-millimeter shaft.
The primary function of a bearing is to assist in rotation and to reduce mechanical friction between the two objects. A bearing may be installed as a separate device or as an integral part of a machine. For more complex applications, bearings are very precise components requiring the highest standards of technology. For this reason, it is important to understand the working principle of bearings. The next time you need to lift or slide a heavy object, consider a bearing.
Ball bearings are a common type of ball bearing and can be found in industrial machinery and automobiles. Their unique structure helps them support less weight. This is because they are comprised of two rings – an inner race and an outer race. The balls themselves have a small area of contact and transfer axial loads in one direction. A cage surrounds the balls and prevents them from colliding. This makes ball bearings a popular choice for many applications.

Sealing system

A bearing’s seals are vital for the operation of rolling and rotating components. These systems enable rotation and linear movement while limiting friction and dispersing stress. Without the proper seals, these components could face catastrophic failure. In addition to protecting the bearing from external forces, seals help retain lubricant inside the system and prevent harmful particles from entering the gap. A seal’s lubrication helps prevent the onset of mechanical damage and prolongs the life of the bearing.
A bearing seal is made up of two parts: the inner sealing element and the outer sealing element. A passageway runs through the bearing assembly to the outer seal element. A hydraulic press or pneumatic jack is recommended for installing the seal. These tools are effective in reducing deformation and improving seal installation quality. When fitting the seal, ensure that the tool does not hit the seal directly. A proper adopter will distribute the load uniformly across the seal.
The seal’s efficiency depends on its gap. A four-inch shaft seal can flow 0.5 standard cubic feet per minute. A seal’s efficiency is highly dependent on the gap size. The gap size is a cube of the flow through the system. A smaller gap size allows high flow and pressure but less leakage. If both surfaces of the seal have similar pressures and flow rates, the seal is efficient. However, a small gap reduces the pressures and reduces wear.
Mechanical seals have numerous advantages, including their ability to protect against contaminants and splashing liquids. Labyrinth seals are the first line of defense against leaks. They operate without friction. Their high level of sealing efficiency helps ensure that the bearing remains operational for long. This type of seal is made from metal plates and is designed for a wide temperature range and misalignment. Its advantages include being easy to install and offering 100% sealing efficiency.

Maintenance

bearing
Bearing maintenance is critical to ensuring that your bearings keep operating at their peak performance. Proper maintenance will improve bearing life, reduce downtime and increase productivity while reducing costs. Here is an 8-point checklist to optimize your bearings and make them last longer. To optimize their performance, you should follow these steps regularly. In case a bearing does not last long, you should replace it as soon as possible. Listed below are some tips to ensure proper maintenance.
The first step is to determine how often your bearings require lubrication. Some manufacturers recommend that you lubricate them weekly, but this can do more harm than good. Instead, use ultrasound to measure the level of friction and trend its levels. This way, you will know exactly when to grease your bearings. It’s also important to check how often they should be inspected and calibrated. A professional can provide guidance on proper maintenance.
Next, inspect your bearings for cracks and scratches. You should never install a bearing that has been dropped or scratched. Even a small crack will affect the performance of the bearing and could lead to its premature failure. A proper alignment is essential for the bearing to function properly. Make sure you have the correct tools to perform this task. These tools can help you reduce manual work and promote safe bearing maintenance. You should also ensure that the shaft and housing are clean and undamaged.
Proper maintenance can prolong bearing service life. Proper lubrication, mounting, inspection, basic condition monitoring, and dismounting can extend their life. Proper maintenance extends their lifespan and improves plant productivity. While bearings are essential for machinery, you should make sure you follow the proper safety procedures every time you work with them. These tips will also help prevent accidents and maintain your machine’s efficiency. Once you’ve followed these guidelines, you can safely inspect your bearings and ensure that they’re operating at their optimum capacity.

China Auto Bearing,Gearbox Bearing,Cylindrical Roller Bearing,N312,2312,Nu312,32312,Nj312,42312,NF312,12312,Ncl312,102312,Nup312,192312,Rn312,502312,Rnu312,292312, supplierChina Auto Bearing,Gearbox Bearing,Cylindrical Roller Bearing,N312,2312,Nu312,32312,Nj312,42312,NF312,12312,Ncl312,102312,Nup312,192312,Rn312,502312,Rnu312,292312, supplier
editor by czh 2022-12-02