LUOYANG MONTON BEARING SCIENCE & TECHNOLOGY CO.,LTD.
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Cylindrical roller bearing NU302N
What is a Cylindrical Roller Bearings?
Cylindrical roller bearings are of high load capacity and can operate at high speeds because they use rollers as their rolling elements. They can therefore be used in applications involving heavy radial and impact loading.
The rollers are cylindrical in shape and crowned at the end in order to reduce the stress concentrations. They are also suitable for applications that require high speed because the rollers are guided by ribs which are either on the outer or inner ring.
More information
With the absence of ribs, either the inner or outer ring will move freely so as to adjust to axial movement hence can be used as free side bearings. This enables them to absorb shaft expansion to a certain extent, relative to the housing position.
NU and NJ type cylindrical roller bearings produce high performance results when used as free side bearings because they possess the required characteristics for that purpose. NF type cylindrical roller bearing also supports the displacement of the axial to a certain extent in both directions and therefore can be used as a free side bearing.
In applications where heavy axial loads have to be supported, cylindrical roller thrust bearings are the most suitable. This is because they are designed to contain shock loads, are stiff and the axial space required is little. They only support axial loads that are acting in a single direction.
Detailed applications
Specifically, our cylindrical roller bearings can be used in industrial transmission, automotive, electric motor, generator sets, elevating machinery, machine tool spindles as well as internal-combustion engines, etc.
Advantages
These roller bearings can be separated and are easy to mount as well as dismount.
| Product name | Cylindrical roller bearing |
| OD(Outer diameter) : | 20-100mm |
| ID(Inner diameter): | 1-50mm |
| B(Thickness) : | 5-100mm |
| Net Weight : | Email us, get more detailed - Net Weight parameters |
| Material : | Bearing steel |
| Dynamic Load Rating : | Used when calculating dry sliding bearings which are to be dynamically loaded |
| Static Load Rating : | Defined as the maximum load which one bearing composite bushing |
| Max Speed : | Determined by criteria that include the form stability of the cage and other |
| limiting factors | |
| Clearance : | Defined as the total distance through which one bearing ring can be moved |
| relative to the other in the radial direction | |
| Number of Rows : | According to specific product, we can custom-made for you |
| Boundary | Mass (KG) | Bearing Numbers | Basic | Limited Speed | ||||
| Dimenssion (mm) | Load Ratings(KN) | (rpm) | ||||||
| d | D | B | approx | Type | Cr | Cor | Grease | Oil |
| 15 | 35 | 11 | 0.05 | N202 | 12.7 | 10.4 | 20000 | 22000 |
| 35 | 11 | 0.05 | NJ202 | 12.7 | 10.4 | 20000 | 22000 | |
| 35 | 11 | 0.05 | NU202 | 12.7 | 10.4 | 20000 | 22000 | |
| 17 | 40 | 12 | 0.06 | N203 | 17.6 | 14.6 | 10000 | 18000 |
| 40 | 12 | 0.06 | NJ203 | 14.5 | 12.8 | 18000 | 18000 | |
| 20 | 47 | 14 | 0.109 | N204 | 16.6 | 13.9 | 17000 | 20000 |
| 47 | 14 | 0.111 | NJ204 | 16.6 | 13.9 | 17000 | 20000 | |
| 47 | 14 | 0.111 | NU204 | 16.6 | 13.9 | 17000 | 20000 | |
| 52 | 15 | 0.149 | N304 | 23.1 | 19.2 | 14000 | 17000 | |
| 52 | 15 | 0.153 | NJ304 | 23.1 | 19.2 | 14000 | 17000 | |
| 52 | 15 | 0.153 | NU304 | 23.1 | 19.2 | 14000 | 17000 | |
| 25 | 52 | 15 | 0.134 | N205 | 18.8 | 17 | 14000 | 16000 |
| 52 | 15 | 0.137 | NJ205 | 18.8 | 17 | 14000 | 17000 | |
| 52 | 18 | 0.17 | NJ2205V | 35.3 | 29.4 | 12000 | 25000 | |
| 52 | 15 | 0.137 | NU205 | 18.8 | 17 | 14000 | 16000 | |
| 62 | 17 | 0.235 | N305 | 31.5 | 27.7 | 12000 | 14000 | |
| 62 | 17 | 0.241 | NJ305 | 31.5 | 27.7 | 12000 | 14000 | |
| 62 | 17 | 0.241 | NU305 | 31.5 | 27.7 | 12000 | 14000 | |
| 62 | 24 | 0.37 | NJ2305V | 67 | 72.7 | 7200 | 10000 | |
| 30 | 62 | 16 | 0.203 | N206 | 24.9 | 23.3 | 12000 | 14000 |
| 62 | 16 | 0.207 | NJ206 | 24.9 | 23.3 | 12000 | 14000 | |
| 62 | 16 | 0.207 | NU206 | 24.9 | 23.3 | 12000 | 14000 | |
| 72 | 19 | 0.35 | N306 | 38.5 | 35 | 10000 | 12000 | |
| 72 | 19 | 0.358 | NJ306 | 38.5 | 35 | 10000 | 12000 | |
| 72 | 19 | 0.358 | NU306 | 38.5 | 35 | 10000 | 12000 | |
| 35 | 72 | 17 | 0.289 | N207 | 35.5 | 34 | 11000 | 12000 |
| 72 | 17 | 0.295 | NJ207 | 35.5 | 34 | 11000 | 12000 | |
| 72 | 17 | 0.295 | NU207 | 35.5 | 34 | 11000 | 12000 | |
| 80 | 21 | 0.451 | N307 | 49.5 | 47 | 9000 | 11000 | |
| 80 | 21 | 0.461 | NJ307 | 49.5 | 47 | 9000 | 11000 | |
| 80 | 21 | 0.461 | NU307 | 49.5 | 47 | 9000 | 11000 | |
| 80 | 21 | 0.536 | NUP307V | 77.2 | 78.6 | 10000 | 23000 | |
| 40 | 80 | 18 | 0.37 | N208 | 43.5 | 43 | 9400 | 11000 |
| 80 | 18 | 0.387 | NJ208 | 43.5 | 43 | 9400 | 11000 | |
| 80 | 18 | 0.378 | NU208 | 43.5 | 43 | 9400 | 11000 | |
Different Characteristics for Different Cylindrical Roller Bearings:
N
The inner ring has two 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
The outer ring of bearings of the NU design has two 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
The outer ring has two integral flanges and the inner ring one integral flange. The bearings are therefore
suitable for the axial location of a shaft in one direction.
NF
The outer ring has one integral flange and the inner ring two integral flanges.
NP
The outer ring has one integral flange and one non-integral flange in the form of a loose flange ring and the inner ring two integral flanges.
NUP
The outer ring has two integral flanges and the inner ring one integral flange and one 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
No outer ring and the inner ring two integral flanges.
