| Number of Teeth (Chordal Action) | Nom. Pitch Diameter | Nom. Outer Diameter | Nom. Hub Width | Available Bore Sizes | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| in | mm | in | mm | in | mm | Round in | Square in | Round mm | Square mm | ||
| 12 (3.41%) | 4.1 | 104 | 4.3 | 109 | 1.5 | 38 | 1.5, 2.5 | ||||
| 18 (1.52%) | 6.1 | 155 | 6.3 | 160 | 1.5, 1.0 | 38, 25 | 60 | ||||
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