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Cylindrical Roller Bearings
Cylindrical Roller Bearingscan accommodate radial loads and operate at high speeds. Applications of cylindrical roller bearings are mostly found in middle-sized and large-sized motors, electricity generators internal combustion engines, gas turbines, machine tool spindles, deceleration devices, unloading and lifting machines and other industrial machines.
The Meaning of Suffix
| 1. Basic Design | 2. Internal Design | 5. Variations | |||
| N | Two integral flanges on inner | EC | Increased capacity plus | BV | V + surface treated rollers |
| ring, flangeless outer ring | improved roller end to flange | 2LS | Two land riding contact seals | ||
| NCF | Full complement, two flanges | contact | V | Full complement bearing | |
| on inner ring, one flange on | 3. Cage Designations | without cage | |||
| outer ring, with snap ring | J | Pressed steel cage, rolling | 6. Special Fea | tures | |
| NJ | One integral flange on inner | element centred | VA 301 | Special bearing specifications | |
| ring,two flanges on outer ring | M | Machined brass cage, rolling | for traction motors | ||
| NJG | Full complement with one | element centred | VA 3091 | VA 301 + VL 0241 | |
| flange on inner ring and two | MA | Machined brass cage, flange | VL 0241 | Aluminum oxide coating on | |
| flanges on outer | outer ring centred | inner ring for electrical | |||
| NNC | Double row CRB with one | ML | One piece form turned, window | insulation | |
| outer ring integral flange | type brass cage, ring centred | VQ 015 | Inner ring with crowned | ||
| and one flange ring | M2 | Solid brass drilled cage, roller | raceway for increased | ||
| NNCF | Two-row, full complement, three | guided | permissible misalignment | ||
| flanges on inner ring, one flange | P | Injection moulded cage of | W23B | Special features for traction | |
| on outer ring with snap ring | fiberglass reinforced | motor bearings | |||
| NNCL | Double row CRB with no outer | polyamide. | |||
| ring integral flanges, one | PH | PEEK, hi-temp polyether ether | |||
| centrally located snap ring | keytone cage | ||||
| NNF | Two-row, full complement | 4. Radial Internal Clearance | |||
| NU | Two integral flanges on outer | C1 | Clearance < C2 | ||
| ring, flangeless inner ring | C2 | Clearance < Normal | |||
| NUP | Two integral flanges on outer | C0,CN | Normal clearance (no symbol | ||
| ring, one integral flange on inner | shown) | ||||
| ring and one loose flange on | C3 | Clearance >Normal | |||
| inner ring | C4 | Clearance >C3 | |||
| RN | N type without outer ring | ||||
| RNU | NU type without inner ring | ||||
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