Quick Flex Couplings Metric Standard Bore Sizes 6 www.jbj.co.uk/couplings.html #DriveLineHarmony Coupling Series Pilot Bore 11 12 14 15 16 18 19 20 22 24 25 28 30 mm mm mm mm mm mm mm mm mm mm mm mm mm QF5 x x x x x x x x x x x x QF15 x x x x x x x x QF25 x x x x x x x x QF50 x x QF100 x x x x QF175 x QF250 x QF500 x QF1000 x QF1890 x QF3150 x QF10260 x QF15000 x QF22480 x QF30000 x The following tables list, by bore size in metric dimensions, couplings that are commonly stocked. Standard Bore Sizes Metric – Clearance Fit Coupling Series Pilot Bore 32 34 35 38 40 42 45 48 50 55 60 65 70 75 mm mm mm mm mm mm mm mm mm mm mm mm mm mm QF5 x QF15 x x x x x x QF25 x x x x x x x x x x QF50 x x x x x x x x x x x x QF100 x x x x x x x QF175 x QF250 x QF500 x QF1000 x QF1890 x QF3150 x QF10260 x QF15000 x QF22480 x QF30000 x Note: Standard metric clearance bore is H7 Tolerance per ISO 266. Keyway conforms to ANSI/AGMA 9112 normal keyway width tolerance.
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