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Operated in the USA
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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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All our products are subject to quality control.
Our warranty provides a guarantee against manufacturer defects.
The guarantee covers any manufacturing, design, or material defect. Please notify us within 2 months of noticing any defects.
It does not cover blows, improper use, or other issues that are not attributable to a manufacturer defects. -
Yes, we offer full and partial refunds.
Please enquire for more information about our Refund policy. -
We use all major carriers, and local courier partners. Use the shipping estimator in the cart to check your shipping rates.
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