Description
The 6311/C3 deep groove ball bearing is designed as a single row bearing that combines versatility with robust performance. With optimized geometry for low friction, it ensures reduced noise and vibration, making it ideal for high-speed operation. This design supports radial and axial loads in both directions while being easy to install and maintain, making it one of the most widely used bearing types.
Measuring 55 mm in bore diameter, 120 mm in outside diameter, and 29 mm in width, the 6311/C3 is built with SKF Explorer performance class for extended reliability. The C3 internal clearance allows it to withstand higher operating temperatures and speeds without compromising performance. Its sheet metal cage provides strength while keeping the bearing lightweight, and the open design allows for application-specific lubrication.
With its balance of load capacity, speed capability, and long service life, this bearing is suitable for motors, pumps, gearboxes, and general machinery. The 6311/C3 ensures consistent performance and durability across a wide range of industrial and mechanical applications.
Specification Table
| Attribute | Details |
|---|---|
| Part Number | 6311/C3 |
| Bearing Type | Deep groove ball bearing |
| Number of Rows | 1 |
| Bore Diameter | 55 mm |
| Outside Diameter | 120 mm |
| Width | 29 mm |
| Radial Internal Clearance | C3 |
| Tolerance Class | Normal |
| Cage | Sheet metal |
| Bore Type | Cylindrical |
| Filling Slots | Without |
| Locating Feature (Outer Ring) | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Without |
| Material | Bearing steel |
| Coating | Without |
| Basic Dynamic Load Rating | 74.1 kN |
| Basic Static Load Rating | 45 kN |
| Reference Speed | 12,000 r/min |
| Limiting Speed | 8,000 r/min |
| SKF Performance Class | SKF Explorer |
| Net Weight | 1.34 kg |
| Indicative Product Carbon Footprint | 4.82 kg CO₂e |
| eClass Code | 23-05-08-01 |
| UNSPSC Code | 31171504 |
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