31 Quick Flex Couplings Installation Guide Table 21. QUICK FLEX Double-Ended Spacer Coupling Misalignment Tolerances Table 22. QUICK FLEX Double-Ended Spacer Maximum RPM Ratings www.jbj.co.uk/couplings.html #DriveLineHarmony Note: Maximum RPM ratings are for off-the-shelf QUICK FLEX couplings. If your application requires higher RPM ratings, the couplings should be dynamically balanced.
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