| Bearing number | 71821 ACD/P4 |
| Size (mm) | 105x130x13 |
| Bore Diameter (mm) | 105 |
| Outer Diameter (mm) | 130 |
| Width (mm) | 13 |
| d | 105 mm |
| D | 130 mm |
| B | 13 mm |
| C | 13 mm |
| d1 | 113.2 mm |
| d2 | 113.2 mm |
| r1 min. | 1 mm |
| r2 min. | 1 mm |
| r3 min. | 0,3 mm |
| r4 min. | 0,3 mm |
| D1 | 122 mm |
| D2 | – mm |
| da min. | 109.6 mm |
| Da max. | 125.4 mm |
| db min | 109,6 mm |
| ra max. | 1 mm |
| rb max. | 0.3 mm |
| dh | 114,6 mm |
| Db max | 128 mm |
| Weight | 0,32 Kg |
| Basic dynamic load rating (C) | 21,6 kN |
| Basic static load rating (C0) | 28,5 kN |
| (Grease) Lubrication Speed | 8 000 r/min |
| (Oil) Lubrication Speed | 12 000 r/min |
| Fatigue load limit (Pu) | 1,1 |
| r1,2 min. | 1 mm |
| r3,4 min. | 0.3 mm |
| a | 34 mm |
| db min. | 109.6 mm |
| Db max. | 128 mm |
| dn | 114.6 mm |
| Basic dynamic load rating C | 21.6 kN |
| Basic static load rating C0 | 28.5 kN |
| Fatigue load limit Pu | 1.1 kN |
| Attainable speed for grease lubrication | 8000 r/min |
| Attainable speed for oil-air lubrication | 12000 r/min |
| Ball diameter Dw | 7.144 mm |
| Number of balls z | 35 |
| Reference grease quantity Gref | 4 cm³ |
| Preload class A GA | 200 N |
| Static axial stiffness, preload class A | 220 N/µm |
| Preload class B GB | 600 N |
| Static axial stiffness, preload class B | 353 N/µm |
| Preload class C GC | 1200 N |
| Static axial stiffness, preload class C | 488 N/µm |
| Calculation factor f | 1.44 |
| Calculation factor f1 | 0.97 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.08 |
| Calculation factor f2C | 1.15 |
| Calculation factor fHC | 1 |
| Calculation factor e | 0.68 |
| Calculation factor (single, tandem) Y2 | 0.87 |
| Calculation factor (single, tandem) Y0 | 0.38 |
| Calculation factor (single, tandem) X2 | 0.41 |
| Calculation factor (back-to-back, face-to-face) Y1 | 0.92 |
| Calculation factor (back-to-back, face-to-face) Y2 | 1.41 |
| Calculation factor (back-to-back, face-to-face) Y0 | 0.76 |
| Calculation factor (back-to-back, face-to-face) X2 | 0.67 |
| Mass bearing | 0.32 kg |
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