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71828ACD/P4 super precision angular contact ball bearing specification:
| Designation | 71828 ACD/P4 | |
| Category | ||
| Angular contact ball bearing, super-precision | ||
| Dimensions | ||
| d (Bore diameter) | 140 mm | 5.118 in |
| D (Outer diameter) | 175 mm | 7.087 in |
| B (Width) | 18 mm | 0.945 in |
| W (Weight) | 0.8 kg | 2.87 lbs |
| Technical Data | ||
| Cr (kN) Basic dynamic load rating | 42.3 | |
| C0r (kN) Basic static load rating | 58.5 | |
| Fatigue load limit | 2 | |
| Attainable speed for grease lubrication (r/min) | 6000 | |
| Attainable speed for oil-air lubrication (r/min) | 9000 | |
| Contact angle | 25 ° | |
| Ball diameter (mm) | 10.319 mm | |
| Number of balls | 35 | |
| Reference grease quantity | 9.9 cm3 | |
| Seal | No | |
| Precision | P4A | |
71828.ACD.P4 angular contact ball bearing 140*175*18 mm
| 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] | |
| 7028 ACD/P4A | 140 | 210 | 33 | 146 | 156 | 5 600 | 8 500 |
| 7028 ACD/P4AH1 | 140 | 210 | 33 | 146 | 156 | 5 600 | 8 500 |
| 7028 ACD/P4AL | 140 | 210 | 33 | 146 | 156 | 5 600 | 8 500 |
| 7028 CD/HCP4A | 140 | 210 | 33 | 153 | 166 | 7 500 | 12 000 |
| 7028 CD/HCP4AH1 | 140 | 210 | 33 | 153 | 166 | 7 500 | 12 000 |
| 7028 CD/HCP4AL | 140 | 210 | 33 | 153 | 166 | 7 500 | 12 000 |
| 7028 CD/P4A | 140 | 210 | 33 | 153 | 166 | 6 700 | 10 000 |
| 7028 CD/P4AH1 | 140 | 210 | 33 | 153 | 166 | 6 700 | 10 000 |
| 7028 CD/P4AL | 140 | 210 | 33 | 153 | 166 | 6 700 | 10 000 |
| 71828 ACD/HCP4 | 140 | 175 | 18 | 42.3 | 58.5 | 7 000 | 11 000 |
| 71828 ACD/P4 | 140 | 175 | 18 | 42.3 | 58.5 | 6 000 | 9 000 |
| 71828 CD/HCP4 | 140 | 175 | 18 | 44.9 | 62 | 8 000 | 12 000 |
| 71828 CD/P4 | 140 | 175 | 18 | 44.9 | 62 | 6 300 | 10 000 |
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