| 齿数（弦振） | 标称节圆直径 | 标称外径 | 标称轮毂宽度 | 可选用的内孔尺寸 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 英寸 | 毫米 | 英寸 | 毫米 | 英寸 | 毫米 | 圆孔 (英寸)1 | 方孔 (英寸) | 圆孔 (毫米)1 | 方孔 (毫米) | |
| 12 (3.41%) | 2.3 | 58 | 2.4 | 61 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 2.6 | 66 | 2.7 | 70 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 3.0 | 76 | 3.1 | 78 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 3.3 | 84 | 3.4 | 87 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 3.7 | 94 | 3.8 | 96 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 4.0 | 102 | 4.1 | 104 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 4.4 | 112 | 4.5 | 113 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 4.7 | 119 | 4.8 | 122 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 5.1 | 130 | 5.1 | 131 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 5.4 | 137 | 5.5 | 139 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 5.8 | 147 | 5.8 | 148 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 6.2 | 157 | 6.2 | 157 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 6.5 | 165 | 6.5 | 165 | 1.0 | 25 | 1-7/16 | – | – | – |
| 12 (3.41%) | 6.9 | 175 | 6.9 | 174 | 1.0 | 25 | 1-7/16 | – | – | – |
圆孔链轮上键的尺寸应符合 ANSI 标准 B17.1-1967 (R1989)（美制）和 DIN 6885 标准（公制）。
