© Siemens AG 2015 FLENDER Standard Couplings Appendix Parallel key connections ■ Overview Parallel key connections to DIN 6885-1 15 15/3 Siemens MD 10.1 · 2015 B T2 T1 H ØD+T2 G_MD10_XX_00172 ØD For moderate operating conditions, the hub keyway tolerance JS9 is recommended. In harsh operating conditions or during reversing operation, the keyway width tolerance P9 must be preferred. 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.
Diameter Keyway width Parallel key height Shaft keyway depth Hub keyway depth Deviation for shaft and hub keyway depth Deviation table for keyway width B over to D B H T1 T2 JS9 P9 mm mm mm mm mm mm mm µm µm 10 3 3 1.8 1.4 +0.1 +12.5 –6 –12.5 –31 10 12 4 4 2.5 1.8 +0.1 +15 –12 –15 –42 12 17 5 5 3 2.3 +0.1 +15 –12 –15 –42 17 22 6 6 3.5 2.8 +0.1 +15 –12 –15 –42 22 30 8 7 4 3.3 +0.2 +18 –15 –18 –51 30 38 10 8 5 3.3 +0.2 +18 –15 –18 –51 38 44 12 8 5 3.3 +0.2 +21.5 –18 –21.5 –61 44 50 14 9 5.5 3.8 +0.2 +21.5 –18 –21.5 –61 50 58 16 10 6 4.3 +0.2 +21.5 –18 –21.5 –61 58 65 18 11 7 4.4 +0.2 +21.5 –18 –21.5 –61 65 75 20 12 7.5 4.9 +0.2 +26 –22 –26 –74 75 85 22 14 9 5.4 +0.2 +26 –22 –26 –74 85 95 25 14 9 5.4 +0.2 +26 –22 –26 –74 95 110 28 16 10 6.4 +0.2 +26 –22 –26 –74 110 130 32 18 11 7.4 +0.2 +31 –26 –31 –88 130 150 36 20 12 8.4 +0.3 +31 –26 –31 –88 150 170 40 22 13 9.4 +0.3 +31 –26 –31 –88 170 200 45 25 15 10.4 +0.3 +31 –26 –31 –88 200 230 50 28 17 11.4 +0.3 +31 –26 –31 –88 230 260 56 32 20 12.4 +0.3 +37 –32 –37 –106 260 290 63 32 20 12.4 +0.3 +37 –32 –37 –106 290 330 70 36 22 14.4 +0.3 +37 –32 –37 –106 330 380 80 40 25 15.4 +0.3 +37 –32 –37 –106 380 440 90 45 28 17.4 +0.3 +43.5 –37 –43.5 –124 440 500 100 50 31 19.4 +0.3 +43.5 –37 –43.5 –124