Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | 311 | |
| Bore diameter | d | 55 mm |
| Outside diameter | D | 120 mm |
| Width | B | 29 mm |
| Basic dynamic load rating | C | 76.5 kN |
| Basic static load rating | C0 | 47.5 kN |
| Mass | ≈m | 1.27 kg |
| Minimum operating temperature | Tmin | -20 °C |
| Maximum operating temperature | Tmax | 120 °C |
Manufacturer Identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 357189 | |
| Brand | INA | |
| Base Type | 311 | |
| Old Designation | ["311 KDDB"] | |
| X Life Marking | n.r. |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Plummer block housing unit 3..-KDD-B, RIBB sheet metal PB | |
| Short Description | Self-aligning deep groove ball bearings |
Technical Data12 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 55 mm | |
| Outside Diameter (Dsp) | 120 mm | |
| Width, Inner Ring (B) | 29 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 76,500 N | |
| Basic Static Load Rating, Radial (C0R) | 47,500 N | |
| Operating Temperature Min. (Tmin) | -20 °C | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Width, Outer Ring (C) | 29 mm | |
| Sealing Total Width (C2) | 27.6 mm | |
| Outside Diameter Seal (D1) | 96.7 mm | |
| Shoulder Diameter Inner Ring (D1) | 73.8 mm | |
| Minimum Chamfer Dimension (Rmin) | 2 mm |
