China Single Row Cylindrical Roller Bearing with Nylon Cage Roller Bearing NSK NTN NACHI Koyo Timken Ball Bearing/Roller Bearing Nu314e ball bearing

Product Description

Cylindrical roller bearings without outer ring capped edge

The NU cylindrical roller bearing has double capped edges on outer ring and without capped edge on inner ring 

The N cylindrical roller bearing has double capped edges on inner ring and without capped edge on outer ring 

The NU and N cylindrical roller bearings, the shaft is allowed two-way displacement toward the bearing box, i.e. the cylindrical roller bearings can bear the change of shaft length due to thermal expansion. Thus It is suitable to serve as a non-fixed bearing. It can bear larger radial load, but cannot take axial load.

 

Cylindrical roller bearings with capped edge on both outer ring and inner

The NJ cylindrical roller bearing has double capped edge on outer ring and single capped edge on inner ring. 

The NF cylindrical roller bearing with the single capped edge on outer ring & double capped edges on inner ring 

The NJ & NF cylindrical roller bearing, the axial-displacement of the shaft or housing on one-direction can be limited. The one-direction axial positioning can be reached. It can burden smaller axial load from one-direction. 

The NUP cylindrical roller bearing with double capped edges on the outer ring & with capped edge on 1 side of the inner ring, as well as with inner ring loose rib on the other side of the inner ring. The two-way axial positioning toward the shaft can be reached. The bearing can bear two-way axial force. The NUP & N cylindrical roller bearings can be chosen for the structure. The NJ and HJ cylindrical roller bearing with separate thrust collar is similar to the NUP cylindrical roller bearing, it can be used as the fixed (positioning) bearing.

 

Cylindrical roller bearings without inner ring or without outer ring

The RNU cylindrical roller bearing has an outer ring with double capped edges but does not come with inner ring. Such bearing is the NU cylindrical roller bearings without the inner ring 

The RN cylindrical roller bearing has an inner ring with double capped edge but does not come with outer ring. 

The RNU and RN cylindrical roller bearing are used with a component having a limitation on radial dimension. The axial journal or the surface of the housing bore can be used as the raceways. The hardness and the machining precision as well as the surface quality should be same as the raceways of the inner ring and the outer ring.

Boundary dimensions(mm)  
d 70
D 150
B 34
rs min 2.1
rs1 min 2.1
Basic load ratings(kN)  
Cr 206
Cor 225
Limiting speed(rpm)  
Grease 4200
Oil 5000
Mass(Kg)  
(Refer.) 3.1

 

 

 

Bearing No. Dimensions (Metric) Approx. Interchange
d F D B Wgt. lbs              
   NU-301 12 18.5 37 12 0.17 NU 301 R 312 E NU 301 NU 301
   NU-302 15 21 42 13 0.23 NU 302 R 315 E NU 302 NU 302
   NU-303 17 25.1 47 14 0.3 NU 303 R 317 E A 1303 TS NU 303 NU 303
   NU-304 20 28.5 52 15 0.37 NU 304 R 320 E A 1304 TS MUC 304 NU 304 NU 304
   NU-305 25 35 62 17 0.62 NU 305 R 325 E A 1305 TS MUC 305 NU 305 NU 305
   NU-306 30 42 72 19 0.92 NU 306 R 330 E A 1306 TS MUC 306 NU 306 NU 306
   NU-307 35 46.2 80 21 1.2 NU 307 R 335 E A 1307 TS MUC 307 NU 307 NU 307
   NU-308 40 53.5 90 23 1.67 NU 308 R 340 E A 1308 TS MUC 308 NU 308 NU 308
   NU-309 45 58.5 100 25 2.19 NU 309 R 345 E A 1309 TS MUC 309 NU 309 NU 309
   NU-310 50 65 110 27 2.89 NU 310 R 350 E A 1310 TS MUC 310 NU 310 NU 310
   NU-311 55 70.5 120 29 3.6 NU 311 R 355 E A 1311 TS MUC 311 NU 311 NU 311
   NU-312 60 77 130 31 4.61 NU 312 R 360 E A 1312 TS MUC 312 NU 312 NU 312
   NU-313 65 83.5 140 33 5.64 NU 313 R 365 E A 1313 TS MUC 313 NU 313 NU 313
   NU-314 70 90 150 35 6.86 NU 314 R 370 E A 1314 TS MUC 314 NU 314 NU 314
   NU-315 75 95.5 160 37 8.13 NU 315 R 375 E A 1315 TS MUC 315 NU 315 NU 315
   NU-316 80 103 170 39 9.84 NU 316 R 380 E A 1316 TS MUC 316 NU 316 NU 316
   NU-317 85 108 180 41 11.34 NU 317 R 385 E A 1317 TS MUC 317 NU 317 NU 317
   NU-318 90 115 190 43 13.45 NU 318 R 390 E A 1318 TS MUC 318 NU 318 NU 318
   NU-319 95 121.5 200 45 15.56 NU 319 R 395 E A 1319 TS MUC 319 NU 319 NU 319
   NU-320 100 129.5 215 47 19.34 NU 320 R 400 E A 1320 TS MUC 320 NU 320 NU 320 100 RU 03
   NU-321 105 135 225 49 22 NU 321 R 405 E A 1321 TS MUC 321 NU 321 NU 321 105 RU 03
   NU-322 110 143 240 50 26.23 NU 322 R 410 E A 1322 TS MUC 322 NU 322 NU 322 110 RU 03
   NU-324 120 154 260 55 32.78 NU 324 R 420 E A 1324 TS MUC 324 NU 324 NU 324 120 RU 03
   NU-326 130 167 280 58 41.11 NU 326 R 430 E A 1326 TS MUC 326 NU 326 NU 326 130 RU 03
   NU-328 140 180 300 62 49.45 NU 328 R 440 E MUC 328 NU 328 NU 328 140 RU 03
   NU-330 150 193 320 65 66.11 NU 330 R 450 E MUC 330 NU 330 NU 330 150 RU 03
   NU-332 160 208 340 68 79.89 NU 332 MUC 332 NU 332 NU 332 160 RU 03
   NU-334 170 220 360 72 94.78 NU 334 MUC 334 NU 334 NU 334 170 RU 03
   NU-336 180 232 380 75 108.34 NU 336 MUC 336 NU 336 NU 336 180 RU 03
   NU-338 190 245 400 78 123.34 NU 338 MUC 338 NU 338 NU 338 190 RU 03
   NU-340 200 260 420 80 140 NU 340 MUC 340 NU 340 NU 340 200 RU 03
   NU-344 220 284 460 88 190 NU 344 MUC 344 NU 344 NU 344 220 RU 03
   NU-348 240 310 500 95 242.22 NU 348 MUC 348 NU 348 NU 348 240 RU 03
   NU-352 260 336 540 102 302.22 NU 352 MUC 352 NU 352 NU 352 260 RU 03
   NU-356 280 362 580 108 368.89 NU 356 MUC 356 NU 356 NU 356 280 RU 03
   NU-360 300 388 620 109 372.577 NU 360 MUC 360 NU 360 NU 360 300 RU 03

 

US $18-20
/ Piece
|
1 Piece

(Min. Order)

###

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

###

Samples:
US$ 18/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Boundary dimensions(mm)  
d 70
D 150
B 34
rs min 2.1
rs1 min 2.1
Basic load ratings(kN)  
Cr 206
Cor 225
Limiting speed(rpm)  
Grease 4200
Oil 5000
Mass(Kg)  
(Refer.) 3.1

###

Bearing No. Dimensions (Metric) Approx. Interchange
d F D B Wgt. lbs              
   NU-301 12 18.5 37 12 0.17 NU 301 R 312 E NU 301 NU 301
   NU-302 15 21 42 13 0.23 NU 302 R 315 E NU 302 NU 302
   NU-303 17 25.1 47 14 0.3 NU 303 R 317 E A 1303 TS NU 303 NU 303
   NU-304 20 28.5 52 15 0.37 NU 304 R 320 E A 1304 TS MUC 304 NU 304 NU 304
   NU-305 25 35 62 17 0.62 NU 305 R 325 E A 1305 TS MUC 305 NU 305 NU 305
   NU-306 30 42 72 19 0.92 NU 306 R 330 E A 1306 TS MUC 306 NU 306 NU 306
   NU-307 35 46.2 80 21 1.2 NU 307 R 335 E A 1307 TS MUC 307 NU 307 NU 307
   NU-308 40 53.5 90 23 1.67 NU 308 R 340 E A 1308 TS MUC 308 NU 308 NU 308
   NU-309 45 58.5 100 25 2.19 NU 309 R 345 E A 1309 TS MUC 309 NU 309 NU 309
   NU-310 50 65 110 27 2.89 NU 310 R 350 E A 1310 TS MUC 310 NU 310 NU 310
   NU-311 55 70.5 120 29 3.6 NU 311 R 355 E A 1311 TS MUC 311 NU 311 NU 311
   NU-312 60 77 130 31 4.61 NU 312 R 360 E A 1312 TS MUC 312 NU 312 NU 312
   NU-313 65 83.5 140 33 5.64 NU 313 R 365 E A 1313 TS MUC 313 NU 313 NU 313
   NU-314 70 90 150 35 6.86 NU 314 R 370 E A 1314 TS MUC 314 NU 314 NU 314
   NU-315 75 95.5 160 37 8.13 NU 315 R 375 E A 1315 TS MUC 315 NU 315 NU 315
   NU-316 80 103 170 39 9.84 NU 316 R 380 E A 1316 TS MUC 316 NU 316 NU 316
   NU-317 85 108 180 41 11.34 NU 317 R 385 E A 1317 TS MUC 317 NU 317 NU 317
   NU-318 90 115 190 43 13.45 NU 318 R 390 E A 1318 TS MUC 318 NU 318 NU 318
   NU-319 95 121.5 200 45 15.56 NU 319 R 395 E A 1319 TS MUC 319 NU 319 NU 319
   NU-320 100 129.5 215 47 19.34 NU 320 R 400 E A 1320 TS MUC 320 NU 320 NU 320 100 RU 03
   NU-321 105 135 225 49 22 NU 321 R 405 E A 1321 TS MUC 321 NU 321 NU 321 105 RU 03
   NU-322 110 143 240 50 26.23 NU 322 R 410 E A 1322 TS MUC 322 NU 322 NU 322 110 RU 03
   NU-324 120 154 260 55 32.78 NU 324 R 420 E A 1324 TS MUC 324 NU 324 NU 324 120 RU 03
   NU-326 130 167 280 58 41.11 NU 326 R 430 E A 1326 TS MUC 326 NU 326 NU 326 130 RU 03
   NU-328 140 180 300 62 49.45 NU 328 R 440 E MUC 328 NU 328 NU 328 140 RU 03
   NU-330 150 193 320 65 66.11 NU 330 R 450 E MUC 330 NU 330 NU 330 150 RU 03
   NU-332 160 208 340 68 79.89 NU 332 MUC 332 NU 332 NU 332 160 RU 03
   NU-334 170 220 360 72 94.78 NU 334 MUC 334 NU 334 NU 334 170 RU 03
   NU-336 180 232 380 75 108.34 NU 336 MUC 336 NU 336 NU 336 180 RU 03
   NU-338 190 245 400 78 123.34 NU 338 MUC 338 NU 338 NU 338 190 RU 03
   NU-340 200 260 420 80 140 NU 340 MUC 340 NU 340 NU 340 200 RU 03
   NU-344 220 284 460 88 190 NU 344 MUC 344 NU 344 NU 344 220 RU 03
   NU-348 240 310 500 95 242.22 NU 348 MUC 348 NU 348 NU 348 240 RU 03
   NU-352 260 336 540 102 302.22 NU 352 MUC 352 NU 352 NU 352 260 RU 03
   NU-356 280 362 580 108 368.89 NU 356 MUC 356 NU 356 NU 356 280 RU 03
   NU-360 300 388 620 109 372.577 NU 360 MUC 360 NU 360 NU 360 300 RU 03
US $18-20
/ Piece
|
1 Piece

(Min. Order)

###

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

###

Samples:
US$ 18/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Boundary dimensions(mm)  
d 70
D 150
B 34
rs min 2.1
rs1 min 2.1
Basic load ratings(kN)  
Cr 206
Cor 225
Limiting speed(rpm)  
Grease 4200
Oil 5000
Mass(Kg)  
(Refer.) 3.1

###

Bearing No. Dimensions (Metric) Approx. Interchange
d F D B Wgt. lbs              
   NU-301 12 18.5 37 12 0.17 NU 301 R 312 E NU 301 NU 301
   NU-302 15 21 42 13 0.23 NU 302 R 315 E NU 302 NU 302
   NU-303 17 25.1 47 14 0.3 NU 303 R 317 E A 1303 TS NU 303 NU 303
   NU-304 20 28.5 52 15 0.37 NU 304 R 320 E A 1304 TS MUC 304 NU 304 NU 304
   NU-305 25 35 62 17 0.62 NU 305 R 325 E A 1305 TS MUC 305 NU 305 NU 305
   NU-306 30 42 72 19 0.92 NU 306 R 330 E A 1306 TS MUC 306 NU 306 NU 306
   NU-307 35 46.2 80 21 1.2 NU 307 R 335 E A 1307 TS MUC 307 NU 307 NU 307
   NU-308 40 53.5 90 23 1.67 NU 308 R 340 E A 1308 TS MUC 308 NU 308 NU 308
   NU-309 45 58.5 100 25 2.19 NU 309 R 345 E A 1309 TS MUC 309 NU 309 NU 309
   NU-310 50 65 110 27 2.89 NU 310 R 350 E A 1310 TS MUC 310 NU 310 NU 310
   NU-311 55 70.5 120 29 3.6 NU 311 R 355 E A 1311 TS MUC 311 NU 311 NU 311
   NU-312 60 77 130 31 4.61 NU 312 R 360 E A 1312 TS MUC 312 NU 312 NU 312
   NU-313 65 83.5 140 33 5.64 NU 313 R 365 E A 1313 TS MUC 313 NU 313 NU 313
   NU-314 70 90 150 35 6.86 NU 314 R 370 E A 1314 TS MUC 314 NU 314 NU 314
   NU-315 75 95.5 160 37 8.13 NU 315 R 375 E A 1315 TS MUC 315 NU 315 NU 315
   NU-316 80 103 170 39 9.84 NU 316 R 380 E A 1316 TS MUC 316 NU 316 NU 316
   NU-317 85 108 180 41 11.34 NU 317 R 385 E A 1317 TS MUC 317 NU 317 NU 317
   NU-318 90 115 190 43 13.45 NU 318 R 390 E A 1318 TS MUC 318 NU 318 NU 318
   NU-319 95 121.5 200 45 15.56 NU 319 R 395 E A 1319 TS MUC 319 NU 319 NU 319
   NU-320 100 129.5 215 47 19.34 NU 320 R 400 E A 1320 TS MUC 320 NU 320 NU 320 100 RU 03
   NU-321 105 135 225 49 22 NU 321 R 405 E A 1321 TS MUC 321 NU 321 NU 321 105 RU 03
   NU-322 110 143 240 50 26.23 NU 322 R 410 E A 1322 TS MUC 322 NU 322 NU 322 110 RU 03
   NU-324 120 154 260 55 32.78 NU 324 R 420 E A 1324 TS MUC 324 NU 324 NU 324 120 RU 03
   NU-326 130 167 280 58 41.11 NU 326 R 430 E A 1326 TS MUC 326 NU 326 NU 326 130 RU 03
   NU-328 140 180 300 62 49.45 NU 328 R 440 E MUC 328 NU 328 NU 328 140 RU 03
   NU-330 150 193 320 65 66.11 NU 330 R 450 E MUC 330 NU 330 NU 330 150 RU 03
   NU-332 160 208 340 68 79.89 NU 332 MUC 332 NU 332 NU 332 160 RU 03
   NU-334 170 220 360 72 94.78 NU 334 MUC 334 NU 334 NU 334 170 RU 03
   NU-336 180 232 380 75 108.34 NU 336 MUC 336 NU 336 NU 336 180 RU 03
   NU-338 190 245 400 78 123.34 NU 338 MUC 338 NU 338 NU 338 190 RU 03
   NU-340 200 260 420 80 140 NU 340 MUC 340 NU 340 NU 340 200 RU 03
   NU-344 220 284 460 88 190 NU 344 MUC 344 NU 344 NU 344 220 RU 03
   NU-348 240 310 500 95 242.22 NU 348 MUC 348 NU 348 NU 348 240 RU 03
   NU-352 260 336 540 102 302.22 NU 352 MUC 352 NU 352 NU 352 260 RU 03
   NU-356 280 362 580 108 368.89 NU 356 MUC 356 NU 356 NU 356 280 RU 03
   NU-360 300 388 620 109 372.577 NU 360 MUC 360 NU 360 NU 360 300 RU 03

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 Single Row Cylindrical Roller Bearing with Nylon Cage Roller Bearing NSK NTN NACHI Koyo Timken Ball Bearing/Roller Bearing Nu314e     ball bearingChina Single Row Cylindrical Roller Bearing with Nylon Cage Roller Bearing NSK NTN NACHI Koyo Timken Ball Bearing/Roller Bearing Nu314e     ball bearing
editor by czh 2022-11-26

Thrust Ball Bearing

As one of the leading thrust ball bearing manufacturers, suppliers, and exporters of mechanical products, We offer thrust ball bearing and many other products.

Please get in touch with us for details.

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