Spherical Roller Bearings 21306 CC (Double Row)
Spherical roller bearings can accommodate heavy loads in both directions. They are self-aligning and accommodate misalignment and shaft deflections, with virtually no increase in friction or temperature. They can be used in a modular system, including housings, sleeves and nuts.
- Accommodate misalignment
- High load carrying capacity
- Low friction and long service life
- Increased wear resistance
| d | 30 mm | Bore diameter |
| tΔdmp | -0.01 – 0 mm | Deviation limits of mid-range bore diameter |
| D | 72 mm | Outside diameter |
| tΔDmp | -0.013 – 0 mm | Deviation limits of mid-range outside diameter |
| B | 19 mm | Width |
| tΔBs | -0.06 – 0 mm | Deviation limits of ring width |
| d2 | ≈43.3 mm | Shoulder diameter of inner ring |
| D1 | ≈58.8 mm | Shoulder/recess diameter of outer ring |
| r1,2 | min.1.1 mm | Chamfer dimension |
| Normal | ISO tolerance class for dimensions |
| Bore diameter | 30 mm |
| Outside diameter | 72 mm |
| Width | 19 mm |
| Basic dynamic load rating | 65.7 kN |
| Basic static load rating | 61 kN |
| Reference speed | 9 500 r/min |
| Limiting speed | 13 000 r/min |
| Number of rows | 2 |
| Locating feature, bearing outer ring | Without |
| Bore type | Cylindrical |
| Cage | Sheet metal |
| Radial internal clearance | CN |
| Tolerance class for dimensions | Normal |
| Tolerance class for run-out | P5 |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |