| Number of Teeth (Chordal Action) | Nom. Pitch Diameter | Nom. Outer Diameter | Nom. Hub Width | Available Bore Sizes | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| in | mm | in | mm | in | mm | Round in1 | Square in | Round mm 1 | Square mm | |
| 10 (4.89%) | 1.6 | 41 | 1.8 | 46 | 0.65 | 17 | 5/8 | |||
| 12 (3.41%) | 1.9 | 48 | 2.1 | 53 | 0.65 | 17 | 1 | 1.0 | 25 | |
| 14 (2.51%) | 2.3 | 58 | 2.4 | 61 | 0.75 | 19 | 3/4, 1, 1-3/16, 1-1/4 | 1.0 | 25 | |
| 17 (1.70%) | 2.7 | 69 | 2.9 | 73 | 0.75 | 19 | 3/4, 1, 1-3/16, 1-1/4, 1-3/8 | 25 | ||
| 19 (1.36%) | 3.1 | 79 | 3.2 | 82 | 0.75 | 19 | 1, 1-3/8 | |||
| 24 (0.86%) | 3.8 | 97 | 4.0 | 101 | 0.75 | 19 | 1 | 1.5 | 25 | 40 |
| 36 (0.38%) | 5.7 | 145 | 5.9 | 150 | 0.75 | 19 | 1 | 1.5, 2 | 40 | |
U.S. key sizes on round bore sprockets are based on ANSI standard B17.1-1967 (R1989) and metric key sizes are based on DIN standard 6885.
