| P/N | Teeth | Pitch Dia. | Bore (Stock) | (Max) | Hub (Dia) | (LTB) |
|---|---|---|---|---|---|---|
| 25B09 | 9 | 0.731 | 1/4" | 1/4" | 19/32" | 0.485 |
| 25B10 | 10 | 0.809 | 1/4" | 1/4" | 9/16" | 0.485 |
| 25B11 | 11 | 0.887 | 1/4" | 5/16" | 9/16" | 0.485 |
| 25B12 | 12 | 0.966 | 5/16" | 3/8" | 11/16" | 0.485 |
| 25B13 | 13 | 1.045 | 5/16" | 7/16" | 3/4" | 0.185 |
| 25B14 | 14 | 1.123 | 5/16" | 1/2" | 3/4" | 0.485 |
| 25B15 | 15 | 1.202 | 5/16" | 1/2" | 3/4" | 0.485 |
| 25B16 | 16 | 1.281 | 5/16" | 1/2" | 13/16" | 0.485 |
| 25B17 | 17 | 1.361 | 5/16" | 1/2" | 29/32" | 0.485 |
| 25B18 | 18 | 1.140 | 3/8" | 1/2" | 1" | 0.485 |
| 25B19 | 19 | 1.519 | 3/8" | 1/2" | 1-1/16" | 0.485 |
| 25B20 | 20 | 1.598 | 3/8" | 1/2" | 1-5/32" | 0.485 |
| 25B21 | 21 | 1.677 | 3/8" | 1/2" | 1-5/32" | 0.485 |
| 25B22 | 22 | 1.757 | 3/8" | 1/2" | 1-5/32" | 0.485 |
| 25B23 | 23 | 1.836 | 1/4" | 1/2" | 3/4" | 0.610 |
| 25B24 | 24 | 1.915 | 3/8" | 13/16" | 1-7/32" | 0.485 |
| 25B25 | 25 | 1.995 | 1/2" | 1" | 1-55/64"* | 0.700 |
| 25B26 | 26 | 2.074 | 3/8" | 13/16" | 1-7/32" | 0.485 |
| 25B27 | 27 | 2.153 | 1/2" | 1" | 2"* | 0.700 |
| 25B28 | 28 | 2.233 | 1/2" | 13/16" | 1-7/32" | 0.485 |
| 25B29 | 29 | 2.312 | 1/2" | 1" | 2" | 0.700 |
| 25B30 | 30 | 2.392 | 3/8" | 7/8" | 1-9/32" | 0.485 |
| 25B31 | 31 | 2.471 | 1/2" | 1" | 2" | 0.700 |
| 25B32 | 32 | 2.551 | 1/2" | 1" | 2" | 0.700 |
| 25B33 | 33 | 2.630 | 1/2" | 1" | 2" | 0.700 |
| 25B34 | 34 | 2.709 | 1/2" | 1" | 2" | 0.700 |
| 25B35 | 35 | 2.789 | 1/2" | 1" | 2" | 0.700 |
| 25B36 | 36 | 2.868 | 1/2" | 7/8" | 1-3/8" | 0.610 |
| 25B37 | 37 | 2.948 | 1/2" | 1" | 2" | 0.700 |
| 25B38 | 38 | 3.027 | 1/2" | 1" | 2" | 0.700 |
| 25B39 | 39 | 3.107 | 1/2" | 1" | 2" | 0.700 |
| 25B40 | 40 | 3.186 | 1/2" | 7/8" | 1-3/3" | 0.610 |
| 25B41 | 41 | 3.266 | 1/2" | 1" | 2" | 0.700 |
| 25B42 | 42 | 3.345 | 1/2" | 1" | 2" | 0.700 |
| 25B43 | 43 | 3.425 | 1/2" | 1" | 2" | 0.700 |
| 25B44 | 44 | 3.504 | 1/2" | 1" | 2" | 0.700 |
| 25B45 | 45 | 3.584 | 1/2" | 1" | 2" | 0.700 |
| 25B46 | 46 | 3.663 | 1/2" | 1" | 2" | 0.700 |
| 25B47 | 47 | 3.743 | 1/2" | 1" | 2" | 0.700 |
| 25B48 | 48 | 3.822 | 1/2" | 7/8" | 1-3/8" | 0.610 |
| 25B49 | 49 | 3.902 | 1/2" | 1-1/2" | 2" | 0.750 |
| 25B50 | 50 | 3.981 | 1/2" | 1-1/2" | 2" | 0.750 |
| 25B54 | 54 | 4.300 | 1/2" | 7/8" | 1-3/8" | 0.610 |
| 25B60 | 60 | 4.777 | 1/2" | 7/8" | 1-3/8" | 0.610 |
1/4” Pitch
Nominal Plate Thickness .110”
Power Plastics manufactures sprockets in a variety of engineering grade plastics to suit many applications. Polymer type sprockets can outperform premium steel sprockets in many harsh applications.
The most common material used for roller chain sprockets larger than #35 chain is UHMW-PE. With an excellent flexural modulus, UHMW-PE slightly deforms under load to evenly distribute the weight of the load among several teeth. This gives UHMW-PE sprockets the ability to handle good loads while increasing chain life.
Other advantages to polymer sprockets include the ability to withstand corrosive environments, reducing sounds levels and meeting FDA/USDA requirements.
Power Plastics can manufacture any type and size of sprocket. You are not limited to the specifications shown in the charts. If a larger hub is required, you need a special face thickness or any other modification, just let us know and we can easily make the change.
We manufacture our sprockets as either A, B, or C hubs. When ordering an A or Chub, just replace the “B” in the part number to either an A or C.
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