Description
The SKF 6311-2Z/C3 deep groove ball bearing is engineered for demanding industrial applications requiring strength, durability, and efficiency. Its non-contact shields protect the internal raceways and retain grease, reducing contamination risks while allowing smooth operation.
As part of the SKF Explorer class, it features optimized internal geometry for lower noise and vibration, making it well-suited for electric motors, pumps, fans, gearboxes, conveyors, and heavy machinery.
Capable of handling both radial and axial loads, the bearing offers a dynamic load rating of 74.1 kN, a static load rating of 45 kN, and a limiting speed of 6,300 r/min. The C3 clearance provides added space for thermal expansion at higher speeds, ensuring reliable and consistent operation.
Specifications
| Attribute | Value |
|---|---|
| Part Number | 6311-2Z/C3 |
| Bearing Type | Deep groove ball bearing |
| Number of Rows | 1 |
| Bore Diameter | 55 mm |
| Outside Diameter | 120 mm |
| Width | 29 mm |
| Basic Dynamic Load Rating | 74.1 kN |
| Basic Static Load Rating | 45 kN |
| Reference Speed | 12,000 r/min |
| Limiting Speed | 6,300 r/min |
| Radial Internal Clearance | C3 |
| Bore Type | Cylindrical |
| Cage Material | Sheet metal |
| Sealing | Shield on both sides |
| Sealing Type | Non-contact |
| Lubricant | Grease |
| Relubrication Feature | Without |
| Filling Slots | Without |
| Matched Arrangement | No |
| Locating Feature, Outer Ring | Without |
| Material | Bearing steel |
| Coating | Without |
| SKF Performance Class | SKF Explorer |
| Product Net Weight | 1.39 kg |
| Indicative Carbon Footprint (Manufacture) | 4.99 kg CO2e |
| eClass Code | 23-05-08-01 |
| UNSPSC Code | 31171504 |
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