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

Merchandise Description

Cylindrical roller bearings are offered in a extensive assortment of designs, series, variants and sizes. The main style distinctions are the amount of roller rows and the inner/outer ring flanges as well as cage patterns and components.

The bearings can satisfy the challenges of purposes faced with heavy radial hundreds and large speeds. Accommodating axial displacement (besides for bearings with flanges on equally the interior and outer rings), they offer you substantial stiffness, minimal friction and extended service existence. 

Cylindrical roller bearings are also accessible in sealed or split patterns. In sealed bearings, the rollers are protected from contaminants, water and dust, even though offering lubricant retention and contaminant exclusion. This supplies reduce friction and more time services lifestyle. Break up bearings are supposed primarily for bearing arrangements which are challenging to obtain, these kinds of as crank shafts, the place they simplify routine maintenance and replacements. 

Attributes and benefits

  • Large load carrying capability
  • Higher stiffness
  • Accommodate axial displacement 
    Besides for bearings with flanges on each the interior and outer rings.
  • Reduced friction
    The open up flange style, 
  • Together with the roller stop style and area finish, advertise lubricant movie formation resulting in lower friction and greater axial load carrying functionality.
  • Extended service existence
    The logarithmic roller profile lowers edge stresses at the roller/raceway speak to  and sensitivity to misalignment and shaft deflection.
  • Enhanced operational reliability
    The area finish on the speak to surfaces of the rollers and raceways supports the development of a hydrodynamic lubricant movie.
  • Separable and interchangeable
    The separable factors of cylindrical roller bearings are interchangeable. This facilitates mounting and dismounting, as well as maintenance inspections.

Programs

Cylindrical roller bearings have attributes that make them ideal for use in many varieties of industrial apps and essential for some. They can be employed in the two locating and non-finding bearing positions in bearing arrangements in for illustration:

  • Stationary gearboxes
  • Automotive gearboxes
  • Electric powered motors
  • Vibration motors
  • Wind turbines
  • Off-highway gear
  • Pumps and compressors
  • Content managing equipment
  • Textile equipment
  • Rail automobiles
  • Rolling mills

 

Sorts NU, N, NNU, and NN are appropriate as free of charge-end bearings. 
Types NJ and NF can maintain minimal axial hundreds in 1 course.
Sorts NH and NUP can be used as mounted-stop bearings.
NH-sort cylindrical roller bearings consist of the NJ-variety cylindrical roller bearings and HJ-variety L-formed thrust collars.
The internal ring unfastened rib of an NUP-variety cylindrical roller bearing need to be mounted so that the marked facet 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 fifteen 35 eleven 7.ninety eight 5.five 15000 19000 -
NU203 seventeen 40 12 9.12 seven 14000 18000 -
NU303 17 47 fourteen twelve.eight ten.eight 13000 17000 .147
NU1004 20 42 twelve 10.5 9.2 13000 17000 .09
NU204E twenty forty seven 14 25.8 24 12000 16000 .117
NU2204E 20 47 18 30.8 30 12000 16000 .149
NU3O4E twenty fifty two 15 29 twenty five.5 11000 15000 .a hundred and fifty five
NU2304E twenty 52 21 39.two 37.five 10000 14000 .216
NU1005 25 forty seven twelve 11 10.two 11000 15000 .1
NU205E 25 52 fifteen 27.five 26.8 11000 14000 .fourteen
NU2205E 25 fifty two eighteen 32.8 33.8 11000 14000 .168
NU305E twenty five sixty two 17 38.five 35.eight 9000 12000 .251
NU2305E twenty five sixty two 24 53.2 54.5 9000 12000 .355
NU1006 thirty fifty five 13 thirteen twelve.8 9500 12000 .12
NU206E thirty sixty two sixteen 36 35.5 8500 11000 .214
NU2206E thirty sixty two 20 45.5 forty eight 8500 11000 .268
NU306E 30 72 19 forty nine.two forty eight.two 8000 10000 .377
NU2306E thirty 72 27 70 75.5 8000 10000 .538
NU406 30 ninety 23 fifty seven.two 53 7000 9000 .73
NU1007 35 sixty two 14 19.5 18.eight 8500 11000 .16
NU207E 35 72 seventeen forty six.five 48 7500 9500 .311
NU2207E 35 seventy two 23 57.five sixty three 7500 9500 .414
NU307E 35 eighty 21 62 63.2 7000 9000 .501
NU2307E 35 80 31 87.5 98.2 7000 9000 .738
NU407 35 100 twenty five 70.eight 68.2 6000 7500 .ninety four
NU1008 40 sixty eight fifteen 21.2 22 7500 9500 .22
NU208E forty eighty 18 fifty one.five 53 7000 9000 .394
NU2208E forty 80 23 67.5 seventy five.two 7000 9000 .507
NU308E forty 90 23 76.8 seventy seven.eight 6300 8000 .68
NU2308E 40 ninety 33 one zero five 118 6300 8000 .974
NU408 forty one hundred ten 27 ninety.five 89.8 5600 7000 one.25
NU1009 forty five seventy five 16 23.two 23.8 6500 8500 .26
NU209E 45 eighty five 19 58.5 63.eight 6300 8000 .forty five
NU2209E forty five eighty five 23 seventy one eighty two 6300 8000 .55
NU309E 45 a hundred 25 93 ninety eight 5600 7000 .93
NU2309E forty five one hundred 36 a hundred thirty 152 5600 7000 one.34
NU400 45 120 29 102 one hundred 5000 6300 1.8
NU1571 fifty 80 16 25 27.five 6300 8000 -
NU210E 50 ninety 20 61.two 69.2 6000 7500 .505
NU2210E 50 90 23 seventy four.2 88.eight 6000 7500 .59
NU310E fifty a hundred and ten 27 105 112 5300 6700 one.two
NU2310E 50 a hundred and ten forty one hundred fifty five 185 5300 6700 1.79
NU410 fifty 130 31 120 120 4800 6000 two.3
NU1011 fifty five ninety 18 35.8 40 5600 7000 .forty five
NU211E 55 100 21 eighty.2 95.five 5300 6700 .sixty eight
NU2211E fifty five 100 25 94.eight 118 5300 6700 .81
NU311E 55 one hundred twenty 29 128 138 4800 6000 1.fifty three
NU2311E 55 one hundred twenty forty three a hundred ninety 228 4800 6000 two.28
NU411 55 one hundred forty 33 128 132 4300 5300 2.eight
NU1012 sixty ninety five eighteen 38.5 45 5300 6700 .48
NU212E sixty 110 22 89.8 102 5000 6300 .86
NU2212E sixty 110 28 122 152 5000 6300 one.twelve
NU312E 60 a hundred thirty 31 142 a hundred and fifty five 4500 5600 one.87
NU2312E 60 one hundred thirty forty six 212 260 4500 5600 2.eighty one
NU412 60 one hundred fifty 35 155 162 4000 5000 3.4

SAMPLES
1. Samples amount: 1-ten PCS are available.
2. Cost-free samples: It depends on the Model No., material and quantity. Some of the bearings samples need shopper to spend samples cost and delivery value.
three. It is much better to start your order with Trade Assurance to get full defense for your samples get.

Customized
The tailored Emblem or drawing is satisfactory for us.

MOQ
one. MOQ: ten PCS normal bearings.
two. MOQ: one thousand PCS tailored your brand bearings.

OEM Coverage
1. We can printing your model (brand, artwork)on the protect or laser engraving your manufacturer on the protect.
two. We can custom your packaging according to your design and style
three. All copyright own by clientele and we promised don't disclose any details.

 

 

 

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

How to Replace a Bearing

If you want to select a bearing for a specific application, you should know a few basics. This article will give you an overview of ball, angular contact, and sliding-contact bearings. You can choose a bearing according to the application based on the characteristics of its material and preload. If you are not sure how to choose a bearing, try experimenting with it. The next step is to understand the Z-axis, which is the axes along which the bearing moves.

Z axis

When it comes to replacing your Z axis bearing, there are several things you must know. First, you need to make sure that the bearings are seated correctly. Then, you should check the tension and rotation of each one. To ensure that both bearings are equally tensioned, you should flex the Core to the desired angle. This will keep the Z axis perpendicular to the work surface. To do this, first remove the Z axis bearing from its housing and insert it into the Z axis motor plate. Next, insert the flanged bearing into the Z axis motor plate and secure it with two M5x8mm button head cap screws.
Make sure that the bearing plate and the Z Coupler part are flush and have equal spacing. The spacing between the two parts is important, as too much spacing will cause the leadscrew to become tight. The screws should be very loose, with the exception of the ones that engage the nylocks. After installing the bearing, the next step is to start the Z axis. Once this is done, you'll be able to move it around with a stepper.

Angular contact

bearing
Ball bearings are made with angular contacts that result in an angle between the bearing's races. While the axial load moves in one direction through the bearing, the radial load follows a curved path, tending to separate the races axially. In order to minimize this frictional effect, angular contact bearings are designed with the same contact angle on the inner and outer races. The contact angle must be chosen to match the relative proportions of the axial and radial loads. Generally, a larger contact angle supports a higher axial load, while reducing radial load.
Ball bearings are the most common type of angular contact bearings. Angular contact ball bearings are used in many applications, but their primary purpose is in the spindle of a machine tool. These bearings are suitable for high-speed, precision rotation. Their radial load capacity is proportional to the angular contact angle, so larger contact angles tend to enlarge with speed. Angular contact ball bearings are available in single and double-row configurations.
Angular contact ball bearings are a great choice for applications that involve axial loads and complex shapes. These bearings have raceways on the inner and outer rings and mutual displacement along the axial axis. Their axial load bearing capacity increases as the contact Angle a rises. Angular contact ball bearings can withstand loads up to five times their initial weight! For those who are new to bearings, there are many resources online dedicated to the subject.
Despite their complexity, angular contact ball bearings are highly versatile and can be used in a wide range of applications. Their angular contact enables them to withstand moderate radial and thrust loads. Unlike some other bearings, angular contact ball bearings can be positioned in tandem to reduce friction. They also feature a preload mechanism that removes excess play while the bearing is in use.
Angular contact ball bearings are made with different lubricants and cage materials. Standard cages for angular contact ball bearings correspond to Table 1. Some are machined synthetic resins while others are molded polyamide. These cage materials are used to further enhance the bearing's axial load capacity. Further, angular contact ball bearings can withstand high speeds and radial loads. Compared to radial contact ball bearings, angular contact ball bearings offer the greatest flexibility.

Ball bearings

bearing
Ball bearings are circular structures with two separate rings. The smaller ring is mounted on a shaft. The inner ring has a groove on the outer diameter that acts as a path for the balls. Both the inner and outer ring surfaces are finished with very high precision and tolerance. The outer ring is the circular structure with the rolling elements. These elements can take many forms. The inner and outer races are generally made of steel or ceramic.
Silicon nitride ceramic balls have good corrosion resistance and lightweight, but are more expensive than aluminum oxide balls. They also exhibit an insulating effect and are self-lubricating. Silicon nitride is also suitable for high-temperature environments. However, this type of material has the disadvantage of wearing out rapidly and is prone to cracking and shattering, as is the case with bearing steel and glass. It's also less resistant to heat than aluminum oxide, so it's best to buy aluminum nitride or ceramic ball bearings for applications that are subjected to extremely high temperatures.
Another type of ball bearings is the thrust bearing. It has a special design that accommodates forces in both axial and radial directions. It is also called a bidirectional bearing because its races are side-by-side. Axial ball bearings use a side-by-side design, and axial balls are used when the loads are transmitted through the wheel. However, they have poor axial support and are prone to separating during heavy radial loads.
The basic idea behind ball bearings is to reduce friction. By reducing friction, you'll be able to transfer more energy, have less erosion, and improve the life of your machine. With today's advances in technology, ball bearings can perform better than ever before. From iron to steel to plastics, the materials used in bearings have improved dramatically. Bearings may also incorporate an electromagnetic field. So, it's best to select the right one for your machine.
The life expectancy of ball bearings depends on many factors, including the operating speed, lubrication, and temperature. A single million-rpm ball bearing can handle between one and five million rotations. As long as its surface contact area is as small as possible, it's likely to be serviceable for at least one million rotations. However, the average lifespan of ball bearings depends on the application and operating conditions. Fortunately, most bearings can handle a million or more rotations before they start showing signs of fatigue.

Sliding-contact bearings

bearing
The basic principle behind sliding-contact bearings is that two surfaces move in contact with one another. This type of bearing works best in situations where the surfaces are made of dissimilar materials. For instance, a steel shaft shouldn't run in a bronze-lined bore, or vice versa. Instead, one element should be harder than the other, since wear would concentrate in that area. In addition, abrasive particles tend to force themselves into the softer surface, causing a groove to wear in that part.
Sliding-contact bearings have low coefficients of friction and are commonly used in low-speed applications. Unlike ball and roller bearings, sliding contact bearings have to be lubricated on both sides of the contacting surfaces to minimize wear and tear. Sliding-contact bearings generally are made of ceramics, brass, and polymers. Because of their lower friction, they are less accurate than rolling-element bearings.
Sliding-contact bearings are also known as plain or sleeve bearings. They have a sliding motion between their two surfaces, which is reduced by lubrication. This type of bearing is often used in rotary applications and as guide mechanisms. In addition to providing sliding action, sliding-contact bearings are self-lubricating and have high load-carrying capacities. They are typically available in two different types: plain bearings and thrust bearings.
Sliding-contact linear bearing systems consist of a moving structure (called the carriage or slide) and the surfaces on which the two elements slide. The surfaces on which the bearing and journal move are called rails, ways, or guides. A bore hole is a complex geometry, and a minimum oil film thickness h0 is usually used at the line of centers. It is possible to have a sliding-contact bearing in a pillow block.
Because these bearings are porous, they can absorb 15 to 30% of the lubrication oil. This material is commonly used in automobile and machine tools. Many non-metallic materials are used as bearings. One example is rubber, which offers excellent shock absorbency and embeddability. While rubber has poor strength and thermal conductivity, it is commonly used in deep-well pumps and centrifugal pumps. This material has high impact strength, but is not as rigid as steel.

China Auto Bearing,Gearbox Bearing,Cylindrical Roller Bearing,N312,2312,Nu312,32312,Nj312,42312,NF312,12312,Ncl312,102312,Nup312,192312,Rn312,502312,Rnu312,292312, drive shaft bearingChina Auto Bearing,Gearbox Bearing,Cylindrical Roller Bearing,N312,2312,Nu312,32312,Nj312,42312,NF312,12312,Ncl312,102312,Nup312,192312,Rn312,502312,Rnu312,292312, drive shaft bearing
editor by czh 2022-12-30