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size
| d | 50 | mm | |
| D | 72 | mm | |
| B | 12 | mm | |
| d1 | 56.7 | mm | |
| d2 | 54.9 | mm | |
| D2 | 67.7 | mm | |
| r1,2 | min. | 0.6 | mm |
| r3,4 | min. | 0.3 | mm |
| a | 14.7 | mm |
Size shoulder size
| da | min. | 53.2 | mm |
| da | max. | 56.1 | mm |
| db | min. | 52 | mm |
| db | max. | 54.5 | mm |
| Da | max. | 68.8 | mm |
| Db | max. | 70 | mm |
| ra | max. | 0.6 | mm |
| rb | max. | 0.3 | mm |
data calculation
| Basic dynamic load rating | C | 12.7 | kN | |
| Basic rated static load | C0 | 8.65 | kN | |
| Fatigue load limit | Pu | 0.365 | kN | |
| 润滑脂润滑可达转速 | 26000 | r/min | ||
| 球直径 | Dw | 7.144 | mm | |
| 页数 | z | 21 | ||
| 预载荷（背对背配置，面对面配置） | ||||
| 预载荷等级 A | GA | 69 | N | |
| 轴向静刚度 | ||||
| 预载荷等级 A | 38 | N/µm | ||
| 预载荷等级 B | GB | 210 | N | |
| 预载荷等级 B | 61 | N/µm | ||
| 预载荷等级 C | GC | 410 | N | |
| 预载荷等级 C | 83 | N/µm | ||
| coefficient | f | 1.15 | ||
| coefficient | f1 | 1 | ||
| coefficient | f2A | 1 | ||
| coefficient | f2B | 1.04 | ||
| coefficient | f2C | 1.08 | ||
| coefficient | fHC | 1 | ||
| 当量轴承载荷coefficient | ||||
| coefficient | f0 | 8.4 | ||
weight
| Bearing weight | 0.13 | kg |
