ARA系列外形尺寸图表：
A1 | A2 | B | C | D(H7) | F | G | H | K | M | N | O | W | Z | φSh7 | Q | 平键 | |
ARA1 | 184 | 108 | 155.5 | 120.5 | φ42 | 70 | 54 | 56 | 60 | 8 | 3 | 40 | 24 | φ6.8 | φ15 | 38 | 5×5 |
ARA2 | 252 | 152 | 226 | 177 | φ42 | 98 | 76 | 72 | 76 | 12 | 5 | 54 | 38 | φ9 | φ20 | 50 | 6×6 |
ARA4 | 280 | 160 | 265 | 210 | φ62 | 110 | 80 | 110 | 110 | 10.5 | 5 | 80 | 40 | φ10.8 | φ24 | 60 | 8×7 |
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