Correct coupling selection guide

ØD+T2 T1 H T2 ØD B Parallel Key Connections toDIN 6885-1 For moderate operating conditions, the hub keyway tolerance JS9 is recommended. In harsh operating conditions or during reversing operation, the keyway width tolerance P9 should be used. With two parallel keyways, the keyway width tolerance JS9 should be specified in order to simplify the assembly. The shaft keyway width has to be specified with the tolerance N9. Keyway Parallel key Shaft Hub Deviation for Deviation table for Diameter width height keyway keyway shaft & hub keyway width B depth depth keyway above up to D D B H T1 T2 depth JS9 P9 mm mm mm mm mm mm mm μm μm +12.5 -6 6 8 2 2 1.2 1 +0.1 -12.5 -31 +12.5 -6 8 10 3 3 1.8 1.4 +0.1 -12.5 -31 +15 -12 10 12 4 4 2.5 1.8 +0.1 -15 -42 +15 -12 12 17 5 5 3 2.3 +0.1 -15 -42 +15 -12 17 22 6 6 3.5 2.8 +0.1 -15 -42 +18 -15 22 30 8 7 4 3.3 +0.2 -18 -51 +18 -15 30 38 10 8 5 3.3 +0.2 -18 -51 +21.5 -18 38 44 12 8 5 3.3 +0.2 -21.5 -61 +21.5 -18 44 50 14 9 5.5 3.8 +0.2 -21.5 -61 +21.5 -18 50 58 16 10 6 4.3 +0.2 -21.5 -61 www.jbj.co.uk/couplings.html#flender 20 #DriveLineHarmony Fitting Recommendations Mechanical Power Transmission Couplings

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