NJ311 NJ312 NJ313 NJ314 NJ315 Cylindrical Roller Bearing 70x160x37mm N310 ECP ECJ ECM Weight 3.35 kgs
1. Cylindrical roller bearings Description :
The cylindrical rollers are in linear contact with the raceways. They have a high radial load capacity and are suitable for high speeds.There are different types designated as NU, NJ, NUP, N, NF (for single-row bearings), NNU, and NN (for double-row bearings depending on the design or absence of side ribs).
2. Types of Cylindrical roller bearings :
N Series - Bearings of N design are single row cylindrical roller bearing and have two fixed ribs on the inner ring that retain the rollers and cage and one smooth outer ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, N Series rolling bearings are used in non-locating bearing units. Also, the N Series bearings have virtually no thrust capacity.
NU Series - Are single row cylindrical roller bearings and have two fixed ribs on the outer ring and one smooth inner ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, NU Series rolling bearings are used in non-locating bearing units. Also, the NU Series bearings have no virtually thrust capacity.
NJ Series - Are single row cylindrical roller bearings and have two fixed ribs on the outer ring and a fixed rib on the inner ring which can guide the shaft in a single direction (axially).
NUP Series - Are single row cylindrical roller bearings and have two fixed ribs on the outer ring and, on the inner ring, a fixed rib and a support washer. This way they can be used as locating bearings, guiding the shaft axially in both directions.
RNU Series - Are single row cylindrical roller bearings and have two fixed ribs on the outer ring and has no inner ring. Instead, it uses the shaft as the opposing raceway.
NF Series - Also able to carry incidental thrust loads, this bearing type features two integral ribs on the inner ring and a single rib on the outer ring.
NN Series - Bearings of NN design are double row cylindrical roller bearing and have three fixed ribs on the inner ring that retain the rollers and cage and one smooth outer ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, N Series rolling bearings are used in non-locating bearing units. Also, the NN Series bearings have no virtually thrust capacity.
NNU Series - Are double row cylindrical roller bearings and have three fixed ribs on the outer ring and one smooth inner ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, NU Series rolling bearings are used in non-locating bearing units. Also, the NNU Series bearings have no virtually thrust capacity.
3. Model list of Cylindrical Roller Bearing :
| Bearing Model | Inner dia (mm) | Outer dia (mm) | Thickness (mm) | Weight (Kg) |
| NJ303 | 17 | 47 | 14 | 0.12 |
| NJ304 | 20 | 52 | 15 | 0.17 |
| NJ305 | 25 | 62 | 17 | 0.29 |
| NJ306 | 30 | 72 | 19 | 0.41 |
| NJ307 | 35 | 80 | 21 | 0.55 |
| NJ308 | 40 | 90 | 23 | 0.75 |
| NJ309 | 45 | 100 | 25 | 1.05 |
| NJ310 | 50 | 110 | 27 | 1.15 |
| NJ311 | 55 | 120 | 29 | 1.50 |
| NJ312 | 60 | 130 | 31 | 1.90 |
| NJ313 | 65 | 140 | 33 | 2.30 |
| NJ314 | 70 | 150 | 35 | 2.80 |
| NJ315 | 75 | 160 | 37 | 3.35 |
| NJ316 | 80 | 170 | 39 | 4.00 |
| NJ317 | 85 | 180 | 41 | 4.80 |
| NJ318 | 90 | 190 | 43 | 5.55 |
| NJ319 | 95 | 200 | 45 | 6.45 |
| NJ320 | 100 | 215 | 47 | 7.65 |
| NJ321 | 105 | 225 | 49 | 9.00 |
| NJ322 | 110 | 240 | 50 | 11.1 |
| NJ324 | 20 | 260 | 55 | 13.5 |
| NJ326 | 130 | 280 | 58 | 18.4 |
| NJ328 | 140 | 300 | 62 | 23.0 |
| NJ330 | 150 | 320 | 65 | 28.0 |
| NJ332 | 160 | 340 | 68 | 33.5 |
| NJ334 | 170 | 360 | 72 | 38.6 |
| NJ336 | 180 | 380 | 75 | 44.6 |
| NJ340 | 200 | 420 | 80 | 58.1 |
4. Application of Roller Bearing :
Cylindrical roller bearing can be used in many areas.
- Casting cements,rolling mills,conveyors in iron and steel industry
- Crushing machines in the cement industry
- Roling dryers,pulpers,squeezers,press masters,water extractors,pumps in paper-making industry
- Gear boxes in shipbuilding industry
- Spinning machines,coal pulverizers,air blowers,rolling machines,generators,elevators,machine tools,vibrating screens,main spindles for wind turbines,etc.
5. Package and shipping for Roller Bearing :
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N310 ECP ECJ ECM Cylindrical Roller Bearing NJ311 NJ312 NJ313 NJ314 NJ315 Images
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