| TEETH | CODE.NO | Pitch Diameter inches (mm) |
Out Diameter inches (mm) |
Hub Diameter inches (mm) |
Round Bore inches (mm) |
Square Bore inches (mm) |
|---|---|---|---|---|---|---|
| 6 | 1636 | 2.1 (53) |
2.2 (56) |
0.75 (19) |
1.0 (25) |
|
| 8 | 1637 | 2.9 (73) |
3.0 (76) |
0.75 (19) |
1.0 (25) |
|
| 10 | 1638 | 3.5 (89) |
3.6 (91) |
0.75 (19) |
1.5 (40) |
|
| 12 | 1639 | 4.1 (104) |
4.3 (109) |
1.5 (38) |
1/1.5 (25/40) |
1.5 (40) |
| 18 | 1640 | 6.1 (155) |
2.1 (160) |
1.5 (38) |
1.97/2.16 (50/55) |
1.5/2.5 (40/60) |