Our 20-tooth HPE sprocket is a modular Engineer-Class Sprocket designed to work with 78-series chains (including 81X) and to use an R1 bushing, providing a broad range of bore sizes with in-stock components. HPE sprockets save users time and money while providing a high-quality 1045-steel sprocket that outlasts other sprockets, even in the most demanding applications. This sprocket is available exclusively through authorized distributors of PEAK Industrial Group. For additional information or to locate your nearest distributor, contact our customer service team, and we will gladly assist you!
| Part # | 78-R1-20H |
|---|---|
| Bushing Type | R1 |
| Tooth Count | 20 |
| Outside Diameter (D) | 17.750" |
| Pitch Diameter (P) | 16.680" |
| Root Diameter (G) | 15.805" |
| Dimension (S) | 3.875" |
| Dimension (L) | 4.000" |
| Plate Thickness (T) | 0.875" |
| Dub Diameter (H) | 5.375" |
| Sprocket Width (W) | 2.000" |
| Dimension (V) | 1.125" |
| Bolt Circle (C) | 4.625" |
| Keyway Width (K) | 0.750" |
The chart below shows the standard bore sizes for R1 bushings.
| Bore (Inch) | Bore (Inch) | Bore (Metric) | Bore (Metric) |
|---|---|---|---|
| 1.125" | 2.500" | 28mm | 80mm |
| 1.188" | 2.625" | 30mm | 85mm |
| 1.250" | 2.688" | 32mm | 90mm |
| 1.375" | 2.750" | 35mm | 95mm |
| 1.438" | 2.875" | 36mm | — |
| 1.500" | 2.938" | 38mm | — |
| 1.625" | 3.000" | 39mm | — |
| 1.688" | 3.125" | 40mm | — |
| 1.750" | 3.188" | 42mm | — |
| 1.875" | 3.250" | 45mm | — |
| 1.938" | 3.375" | 48mm | — |
| 2.000" | 3.438" | 50mm | — |
| 2.125" | 3.500" | 55mm | — |
| 2.188" | 3.625" | 60mm | — |
| 2.250" | 3.688" | 65mm | — |
| 2.375" | 3.750" | 70mm | — |
| 2.438" | — | 75mm | — |
Our HPE Sprockets are utilized in a broad range of applications, designed and created to get useres back up and running in a timley and budeget freiendly manner. HPE Sprockets are only availble through authorized PEAK Industrial Group Distributors. To find our more information or to locate a distributor please contact us!
Contact Us