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The NN 30 Series double row cylindrical roller bearings provide a good balance between load capacity, stiffness, and speed. These bearings have three flanges on the inner ring and no flanges on the outer ring. This allows the bearings to handle axial movement of the shaft in both directions. The separable design makes it easier to install and remove the bearings, especially when both rings need to have an interference fit to handle the loads. The tapered bore also helps with setting the right amount of clearance or preload when putting the bearings in.
| Inner Diameter | 45 mm | Number of Rows | Double Row | |
| Outer Diameter | 75 mm | Cage Material | Non-Metallic | |
| Width | 23 mm | Bearing Material | Steel | |
| Dynamic Load Rating | 50.1 kN | Seal Type | None On Both Sides | |
| Static Load Rating | 65.5 kN | Clearance | NSTD | |
| Fatigue Load Limit | 7.65 kN | Precision | Class SP | |
| Reference Speed | 12 000 rpm | Min Temperature | -40 °C | |
| Limiting Speed | 14 000 rpm | Max Temperature | +120 °C | |
| Rolling Element | Roller | Size Standard | Metric System | |
| Bore Type | Tapered 1:12 | Mass | 0.375 kg |
FEATURES AND BENEFITS
Able to handle very heavy radial loads, suitable for applications with significant load demands.
Specifications
Inner Diameter (ID): 45
Outer Diameter (OD): 75
Width (W): 23
Overall Size (IDxODxW): 45x75x23
Dynamic Load Rating: 50.1 kN
Static Load Rating: 65.5 kN
Bearing Material: Steel
Reference Speed: 12 000 rpm
Limiting Speed: 14 000 rpm
Cage Material: Non-Metallic
Seal Type: None On Both Sides
Clearance: NSTD
Precision: Class SP
Operating Temperature: -40 °C to +120 °C
Mass: 0.375 kg
