Description
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Extended 7021ACD/HCP4AL super precision angular contact ball bearings
| Designation | 7021-ACD/HCP4AL | |
| Category | ||
| Angular contact ball bearing, super-precision | ||
| Dimensions | ||
| d (Bore diameter) | 105 mm | 4.134 in |
| D (Outer diameter) | 160 mm | 6.299 in |
| B (Width) | 26 mm | 1.024 in |
| W (Weight) | 1.32 kg | 2.9 lbs |
| Technical Data | ||
| Cr (kN) Basic dynamic load rating | 90.4 | |
| C0r (kN) Basic static load rating | 93 | |
| Fatigue load limit | 2.5 | |
| Attainable speed for grease lubrication (r/min) | 9000 | |
| Attainable speed for oil-air lubrication (r/min) | 14000 | |
| Contact angle | 25 ° | |
| Ball diameter (mm) | 17.462 mm | |
| Number of balls | 21 | |
| Reference grease quantity | 20.4 cm3 | |
| Seal | No | |
| Precision | P4A | |
Extended 7021.ACD.HCP4AL angular contact ball bearings 105*160*26
| 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] | |
| 7021 ACD/HCP4A | 105 | 160 | 26 | 90.4 | 93 | 9 000 | 14 000 |
| 7021 ACD/HCP4AH1 | 105 | 160 | 26 | 90.4 | 93 | 9 000 | 14 000 |
| 7021 ACD/HCP4AL | 105 | 160 | 26 | 90.4 | 93 | 9 000 | 14 000 |
| 7021 ACD/P4A | 105 | 160 | 26 | 90.4 | 93 | 7 500 | 12 000 |
| 7021 ACD/P4AH1 | 105 | 160 | 26 | 90.4 | 93 | 7 500 | 12 000 |
| 7021 ACD/P4AL | 105 | 160 | 26 | 90.4 | 93 | 7 500 | 12 000 |
| 7021 CD/HCP4A | 105 | 160 | 26 | 95.6 | 96.5 | 10 000 | 15 000 |
| 7021 CD/HCP4AH1 | 105 | 160 | 26 | 95.6 | 96.5 | 10 000 | 15 000 |
| 7021 CD/HCP4AL | 105 | 160 | 26 | 95.6 | 96.5 | 10 000 | 15 000 |
| 7021 CD/P4A | 105 | 160 | 26 | 95.6 | 96.5 | 8 000 | 13 000 |
| 7021 CD/P4AH1 | 105 | 160 | 26 | 95.6 | 96.5 | 8 000 | 13 000 |
| 7021 CD/P4AL | 105 | 160 | 26 | 95.6 | 96.5 | 8 000 | 13 000 |
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