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.
SPECIFICATIONS
| Inner Diameter | 40 mm | Number of Rows | Double Row | |
| Outer Diameter | 68 mm | Cage Material | Machined Metal | |
| Width | 21 mm | Bearing Material | Steel | |
| Dynamic Load Rating | 42.9 kN | Seal Type | None On Both Sides | |
| Static Load Rating | 56 kN | Clearance | C1 | |
| Fatigue Load Limit | 6.5 kN | Precision | Class SP | |
| Reference Speed | 13 000 rpm | Min Temperature | -40 °C | |
| Limiting Speed | 15 000 rpm | Max Temperature | +120 °C | |
| Rolling Element | Roller | Size Standard | Metric System | |
| Bore Type | Tapered 1:12 | Mass | 0.278 kg |
FEATURES AND BENEFITS
- High rigidity and high running accuracy.
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Able to handle very heavy radial loads, suitable for applications with significant load demands.
- Accommodate axial displacement in both directions to minimize noise, vibration and heat generation.
Yes, miniature ball bearings are designed to handle high rotational speeds, making them ideal for devices and equipment that require rapid movement.
US 19019 
GB 12325 
CA 10536 
AU 6853 
IE 2311 
BR 1157 
NZ 1095 
MY 1025 
