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B7212-E-T-P4S-UL
Spindle bearing
Spindle bearing B72..-E, adjusted, in pairs or sets, contact angle α = 25°, restricted tolerances
Replaces
B7212E.T.P4S.UL, B7212E.TPA.P4.UL
Product information
Main Dimensions & Performance Data
| d | 60 mm | Bore diameter |
| D | 110 mm | Outside diameter |
| B | 22 mm | Width |
| Cr | 53,000 N | Basic dynamic load rating, radial |
| C0r | 29,500 N | Basic static load rating, radial |
| Cur | 3,150 N | Fatigue load limit, radial |
| nG Grease | 12,000 1/min | Limiting speed for grease lubrication |
| nG Oil | 19,000 1/min | Limiting speed for oil lubrication |
| ≈m | 0.779 kg | Weight |
Mounting dimensions
| da | 69.5 mm | Diameter shaft shoulder |
| da | h12 | Diameter shaft shoulder clearance |
| Da | 101.5 mm | Shoulder diameter outer ring |
| Da | H12 | Shoulder diameter outer ring clearance |
| ra max | 1.5 mm | Maximum recess radius |
| ra1 max | 0.6 mm | Maximum recess radius |
| Etk min | 77 mm | Minimum diameter injection pitch |
| Etk max | 81.9 mm | Maximum diameter injection pitch |
| Etk1 min | 77 mm | Minimum diameter injection pitch |
| Etk1 max | 81.9 mm | Maximum diameter injection pitch |
| a | 30.9 mm | Distance between the apexes of the pressure cones |
Dimensions
| rmin | 1.5 mm | Minimum chamfer dimension |
| r1 min | 1.5 mm | Minimum chamfer dimension |
| α | 25 ° | Contact angle |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 100 °C | Operating temperature max. |
Additional information
| FV L | 463 N | Preload force light |
| FV M | 1,586 N | Preload force medium |
| FV H | 3,304 N | Preload force heavy |
| KaE L | 1,351 N | Lift-off force light |
| KaE M | 4,794 N | Lift-off force medium |
| KaE H | 10,334 N | Lift-off force heavy |
| ca L | 165 N/µm | Axial rigidity light |
| ca M | 264 N/µm | Axial rigidity medium |
| ca H | 358 N/µm | Axial rigidity heavy |