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HPE Sprockets are the first standardized modular sprocket of its kind. Precision manufactured to accommodate specific QD or Split-Taper bushings, depending on the tooth-count, this offers an off-the-shelf option for engineer-class sprocket types. HPE sprockets we designed and created to eliminate downtime when replacing engineer-class sprockets that are otherwise custom-bored or custom-manufactured. Additionally, these sprockets are more economical upfront than having a machine shop custom-produce a one-off sprocket.
HPE Sprocket Sizes
The chart below shows the standard HPE sprocket sizes. For additional sizes or custom sprockets, contact our customer support team!
| Part # | Tooth Count | Outside Diameter (D) | Pitch Diameter (P) | Bushing Type | (T) | (G) | (S) | (L) | (H) | (V) | (W) | (C) | (K) | (B) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 78-SK-7H | 7 | 6.375" | 6.010" | SK | 0.875" | 5.135" | 2.375" | 2.813" | 3.875" | -- | 1.25" | 3.313" | 0.335" | -- |
| 78-Q1-8H | 8 | 7.25" | 6.820" | Q1 | 0.875" | 5.945" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78X-R1-9H | 9 | 8.125" | 7.630" | R1 | 0.875" | 6.639" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78XR1-10H | 10 | 9.187" | 8.440" | R1 | 0.875" | 7.565" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78X-R1-11H | 11 | 9.875" | 9.260" | R1 | 0.875" | 8.385" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78X-R1-12H | 12 | 11.25" | 10.080" | R1 | 0.875" | 9.205" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78XR1-13H | 13 | 11.687" | 10.9" | R1 | 0.875" | 10.025" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78XR1-14H | 14 | 12.5" | 11.720" | R1 | 0.875" | 10.845" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78XR1-15H | 15 | 13.75" | 12.55" | R1 | 0.875" | 11.675" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78XR1-16H | 16 | 14.125" | 13.370" | R1 | 0.875" | 12.495" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78XR1-17H | 17 | 15.5" | 14.2" | R1 | 0.875" | 13.325" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78XR1-18H | 18 | 15.75" | 15.020" | R1 | 0.875" | 14.145" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78XR1-19H | 19 | 16.625" | 15.85" | R1 | 0.875" | 14.975" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
| 78XR1-20H | 20 | 17.75" | 16.680" | R1 | 0.875" | 15.805" | 3.875" | 4" | 5.375" | 1.125" | 2" | 4.625" | 0.75" | 4.187" |
HPE Sprocket Advantages
Being made from 1045 steel rather than other materials like 1018 gives these sprockets an advantage in terms of strength and lifespan. 1045 steel offers excellent tensile strength and hardness, making it suitable for even the most demanding of applications.
With hardened teeth, users get the advantage of an extended operating life due to a highly reduced rate of tooth-wear, enhanced load capacities, shock and fatigue resistance, and lower long-term operating costs. All of our unique HPE Sprockets feature precision hardened teeth, so users get the most out of every sprocket.
Each sprocket is manufactured to precision tolerances for the best possible performance. This also ensures that the rate of wear is even across all teeth to improve service life.
What truly makes HPE Sprockets a game-changer is their versatility. Having a modular sprocket capable of accepting a QD or Taper Lock bushing opens the doors for a broad range of inch, metric, and idler configurations from stock components.
HPE Sprockets are supplied with a superb black oxide coating, providing a thin layer of corrosion resistance. Our black oxide coating also improves lubricity and reduces light reflection.
Frequently Asked Questions
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If your order is less than $300, no problem! Please give us a call at 407-347-3519 or email Sales@usarollerchain.com, and we will be happy to assist you!
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USA Roller Chain utilizes an extensive network of vendors and warehouses to ensure you get your items quickly! Our primary roller chain warehouse is located in Clermont, FL, but we have warehouses located all across the United States. Your order will be shipped from the closest warehouse to you that has your requested product in stock. This speeds up transit times and saves you money on shipping! If you have any questions about where an item will ship from, please CONTACT US
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In-stock items are typically shipped out in 1-3 business days.Made-to-order item lead times vary from 1-2 days up to 14-20+ weeks, depending on the product. If you need your items urgently, please let us know, and we will do our best to meet your required delivery date! If you have any questions, please CONTACT US
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If you are having an issue with your order, please CONTACT US as soon as possible so we can resolve it for you.
Most in-stock items can be returned within 30 days of the shipment date. MTO or Custom orders are not eligible for a return or refund. For a detailed explanation of our return policies, please click here.
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Absolutely! We may be called "USA Roller Chain", but we ship worldwide! Please CONTACT US for Export/International quotes or orders.