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Operated in the USA
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Unmatched Quality
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Fast Shipping
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Expert Support
Quick-Disconnect (QD) Bushings
Designed for easy installation and easy uninstallation, QD bushings, also known as quick-disconnect bushings, are used throughout the industrial power transmission and agricultural industries for various sprocket, sheave, pulley, and synchronized drive needs. USA Roller Chain & Sprockets' QD bushings are renowned for their superior holding power and extreme strength across a wide range of applications. Made from high-grade steel that has been precision-machined for perfect application fitment and capability to be interchanged with other brands, these QD bushings provide both reliable and durable performance.
The bushings can be installed in both conventional and reverse mounting styles to suit your precise needs while offering ease of install/uninstall due to the single split that extends through the entire bushing length. The highest demands are met by these innovative components – they’re being used in some of the toughest conditions and most rugged applications worldwide!
We stock all of the standard sizes you require as well as offer custom QD bushings, including stainless steel options, upon request. Please don’t hesitate to reach out to our knowledgeable customer service team for a quote or additional information about our premium QD bushings.
QD Bushing Size Chart
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Bushing Type
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(A)
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(B)
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(D)
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(E)
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(F)
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(G)
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(L)
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Bolt Circle
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Cap Screws Required
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Min. Stock Bore
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Max. Bore W/ KW
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Max Bore W/ Shallow KW
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Set Screw Size
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Avg. Weight (LBS)
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| JA | 0.375" | 1.375" | 2.000" | 0.688" | 0.563" | 0.210" | 1.000" | 1.665" | 3 - 10X1 | 0.375" | 1.000" | 1.250" | 10 - 24 | 0.9 |
| SH | 0.438" | 1.871" | 2.688" | 0.875" | 0.813" | 0.243" | 1.250" | 2.250" | 3 - 0.25X1.375 | 0.500" | 1.375" | 1.688" | 0.25 - 20 | 1.0 |
| SDS | 0.500" | 2.187" | 3.188" | 0.875" | 0.750" | 0.265" | 1.315" | 2.688" | 3 - 0.25X1.375 | 0.500" | 1.688" | 2.000" | 0.25 - 20 | 1.0 |
| SD | 0.500" | 2.187" | 3.188" | 0.938" | 1.250" | 0.260" | 1.813" | 2.688" | 3 - 0.25X1.875 | 0.500" | 1.688" | 1.938" | 0.25 - 20 | 1.5 |
| SK | 0.563" | 2.812" | 3.875" | 1.375" | 1.250" | 0.317" | 1.875" | 3.313" | 3 - 0.313X2 | 0.500" | 2.125" | 2.500" | 0.313 - 18 | 2.0 |
| SF | 0.563" | 3.125" | 4.625" | 1.500" | 1.250" | 0.322" | 2.000" | 3.875" | 3 - 0.375X2 | 0.500" | 2.313" | 2.316" | 0.313 - 18 | 3.0 |
| E | 0.750" | 3.834" | 6.000" | 1.875" | 1.625" | 0.327" | 2.625" | 5.000" | 3 - 0.5X2.75 | 0.875" | 2.875" | 3.500" | 0.375 - 16 | 10.0 |
| F | 0.813" | 4.437" | 6.625" | 2.813" | 2.500" | 0.423" | 3.625" | 5.625" | 3 - 0.563X3.625 | 1.000" | 3.313" | 3.938" | 0.5 - 13 | 11.5 |
| J | 1.000" | 5.148" | 7.250" | 3.500" | 3.188" | 0.423" | 4.500" | 6.250" | 3 - 0.625X4.5 | 1.438" | 3.750" | 4.500" | 0.625 - 11 | 18.0 |
| M | 1.250" | 6.500" | 9.000" | 5.500" | 5.188" | 0.423" | 6.750" | 7.875" | 4 - 0.75X6.75 | 1.938" | 4.750" | 5.500" | 0.75 - 10 | 37.0 |
| N | 1.500" | 7.000" | 10.25" | 6.625" | 6.250" | 0.423" | 8.125" | 8.500" | 4 - 0.875X8.5 | 2.438" | 5.125" | 6.000" | 0.75 - 10 | 57.0 |
| P | 1.750" | 8.250" | 11.75" | 7.625" | 7.250" | 0.423" | 9.375" | 10.00" | 4 - 1X9.5 | 2.938" | 5.983" | 7.000" | 0.875 - 9 | 120.0 |
| W | 2.000" | 10.437" | 15.00" | 9.375" | 9.000" | 0.564" | 11.375" | 12.75" | 4 - 1.125X11.5 | 4.000" | 7.500" | 8.500" | 1 - 8 | 250.0 |
| S | 3.250" | 12.125" | 17.75" | 12.50" | -- | 0.814" | 15.750" | 15.00" | 5 - 1.125X15.5 | 6.000" | 8.250" | 10.000" | 1.25 - 7 | 400.0 |
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.