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71911ACD/HCP4AL super precision angular contact ball bearing
| Designation | 71911 ACD/HCP4AL | |
| Category | ||
| Angular contact ball bearing, super-precision | ||
| Dimensions | ||
| d (Bore diameter) | 55 mm | 1.772 in |
| D (Outer diameter) | 80 mm | 3.347 in |
| B (Width) | 13 mm | 0.748 in |
| W (Weight) | 0.15 kg | 0.75 lbs |
| Technical Data | ||
| Cr (kN) Basic dynamic load rating | 18.2 | |
| C0r (kN) Basic static load rating | 13.7 | |
| Fatigue load limit (kN) | 0.43 | |
| Attainable speed for grease lubrication (r/min) | 17 000 | |
| Attainable speed for oil-air lubrication (r/min) | 28 000 | |
| Contact angle | 25 ° | |
| Ball diameter (mm) | 7.938 mm | |
| Number of balls | 23 | |
| Reference grease quantity | 2.49 cm3 | |
| Seal | No | |
| Precision | P4A | |
71911.ACD.HCP4AL angular contact ball bearing 55*80*13
| Designation | Principal dimensions | Basic load ratings | Attainable speeds | ||||
| dynamic | static | Grease lubrication | Oil-air lubrication | ||||
| d[mm] | D[mm] | B[mm] | C[kN] | C0[kN] | [r/min] | [r/min] | |
| S71911 ACB/HCP4A | 55 | 80 | 13 | 9.36 | 7.65 | 24 000 | |
| 71911 CB/P4A | 55 | 80 | 13 | 9.95 | 8.15 | 22 000 | 34 000 |
| 71911 CB/P4AL | 55 | 80 | 13 | 9.95 | 8.15 | 22 000 | 34 000 |
| S71911 CB/P4A | 55 | 80 | 13 | 9.95 | 8.15 | 22 000 | |
| 71911 CB/HCP4A | 55 | 80 | 13 | 9.95 | 8.15 | 28 000 | 43 000 |
| 71911 CB/HCP4AL | 55 | 80 | 13 | 9.95 | 8.15 | 28 000 | 43 000 |
| S71911 CB/HCP4A | 55 | 80 | 13 | 9.95 | 8.15 | 28 000 | |
| 71911 ACE/P4AH1 | 55 | 80 | 13 | 14.6 | 10.2 | 21 000 | 32 000 |
| 71911 ACE/P4AL | 55 | 80 | 13 | 14.6 | 10.2 | 21 000 | 32 000 |
| S71911 ACE/P4A | 55 | 80 | 13 | 14.6 | 10.2 | 21 000 | |
| 71911 ACE/HCP4AH1 | 55 | 80 | 13 | 14.6 | 10.2 | 25 000 | 39 000 |
| 71911 ACE/HCP4AL | 55 | 80 | 13 | 14.6 | 10.2 | 25 000 | 39 000 |
| S71911 ACE/HCP4A | 55 | 80 | 13 | 14.6 | 10.2 | 25 000 | |
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