| 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 |