Cylindrical Roller Bearings NJ 304 ECP
Single row cylindrical roller bearings are designed to accommodate high radial loads in combination with high speeds. Having two integral flanges on the outer ring and one on the inner ring, NJ design bearings can accommodate axial displacement in one direction. An important feature is the separable design, which facilitates mounting and enables the bearing components to be interchanged.
- High radial load carrying capacity
- Low friction
- Long service life
- Locate the shaft axially in one direction
- Separable design
| d | 20 mm | Bore diameter |
| D | 52 mm | Outside diameter |
| B | 15 mm | Width |
| d1 | ≈ 31.2 mm | Shoulder diameter of inner ring |
| D1 | ≈ 41.85 mm | Shoulder diameter of outer ring |
| F | 27.5 mm | Raceway diameter of inner ring |
| r1,2 | min.1.1 mm | Chamfer dimension |
| r3,4 | min.0.6 mm | Chamfer dimension |
| s | max.0.9 mm | Permissible axial displacement |
| Bore diameter | 20 mm |
| Outside diameter | 52 mm |
| Width | 15 mm |
| Basic dynamic load rating | 35.5 kN |
| Basic static load rating | 26 kN |
| Reference speed | 15 000 r/min |
| Limiting speed | 18 000 r/min |
| Bearing part | Complete bearing |
| Axial displacement capability | In one direction |
| Number of rows | 1 |
| Locating feature, bearing outer ring | None |
| Bore type | Cylindrical |
| Cage | Non-metallic |
| Number of flanges, outer ring | 2 |
| Number of flanges, inner ring | 1 |
| Loose flange | None |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |