“M” Type with Clamp Hubs ® TRASCO ES Zero Backlash Jaw Couplings 10 www.jbj.co.uk/couplings.html #DriveLineHarmony This type of coupling permits quick, positive mounting, without any shaft-hub backlash. With the keyless coupling type, the torque applied for tightening down the screws (Ms) must be as given in the table. The M coupling type is available with or without keyway. Approved according to ATEX Directive. 7 3 7 M2 0,35 0,003 0,085 x 10-6 40.000 9 4 10 M2,5 0,75 0,007 0,42 x 10-6 28.000 12 4 12 M3 1,4 0,015 1,4 x 10-6 22.000 14 6 16 M3 1,4 0,018 2,6 x 10-6 19.000 19/24 10 24* M5 11 0,071 18,1 x 10-6 14.000 24/28 10 32 M6 11 0,156 74,9 x 10-6 10.600 28/38 14 38 M8 25 0,240 163,9 x 10-6 8.500 38/45 18 45 M8 25 0,440 465,5 x 10-6 7.100 42 25 50 M10 70 2,100 3.095 x 10-6 6.000 48 25 55 M12 120 2,900 5.160 x 10-6 5.600 55 35 70 M12 120 4,000 9.737 x 10-6 5.000 65 40 80 M14 190 5,800 17.974 x10-6 4.600 75 40 80 M16 295 8,100 29.304 x10-6 2.950 Aluminium Hubs 2 J(kgm ) W(kg) Hub Hub F min (mm) F max (mm) nmax -1 (min ) A G H-a L I M N S P E Fig. Steel Hubs - 14 - - 22 7 8 6 1,0 6 4 15,0 1 - 20 7,2 - 30 10 10 8 1,0 2 5 23,4 1 180° 25 8,5 - 34 11 12 10 1,0 3 5 27 1 180° 30 10,5 - 35 11 13 10 1,5 2 5,5 32,2 1 120° 40 18 - 66 25 16 12 2,0 3,5 12 45,7* 1 90° 55 27 - 78 30 18 14 2,0 4 12 57,5 2 90° 65 30 - 90 35 20 15 2,5 5,2 13,5 72,6 2 90° 80 38 - 114 45 24 18 3,0 5,6 16 83,3 2 - 95 46 - 126 50 26 20 3,0 5,6 20 78,8 2 - 105 51 - 140 56 28 21 3,5 6 21 108,0 2 - 120 60 - 160 65 30 22 4,0 9 26 122,0 2 - 135 68 - 185 75 35 26 4,5 8,3 27,5 139,0 2 - 160 80 53-135 210 85 40 30 5,0 8,3 30 147,5 3 t Keyway Position a f Ms (Nm) *Size 19/24 up to bore Ø 20 screw M6, over M5 screw (Ø E= 46,7 mm). From size 7 to 19/24: single slot execution. From size 24/28 to 65: double slot execution. Bore tolerance: F7 - JS9 (DIN 6885/1) keyway. Ms Screw tightening torque Nm W Weight kg J Coupling moment of inertia kgm2 n Maximum rpm min-1 max A I M I N L S S P F G t E f A S S N L M I I P t F G E f P a M I I Keyway position S N L S H t F G A E f E α Fig. 1 Fig. 1 Fig. 2 Fig. 2 Fig. 3 Fig. 3 All measurements in millimetres unless otherwise stated.
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