www.jbj.co.uk/couplings.html#flender 20 #DriveLineHarmony Length-Dependent Specifications Torsionally Rigid All-Steel Couplings If a coupling is fitted with an H-spacer, the type designation changes accordingly. For example, an NEN becomes an NHN, an MFEFM becomes an MFHFN. No version with an H-spacer is provided for the BEB type. Length-dependent technical specifications for the various coupling types are shown on the following table. The shaft distance S must be specified in mm. The specifications with regard to weight and mass moment of inertia refer to the whole coupling with maximum bores D1/ D2. Types NEN/ NHN, BEB, MCECM/MCHCMandMFEFM/MFHFM The values for torsional stiffness apply to the whole coupling (not including the hubs and customer shafts) and refer to the rated coupling torque TKN. For determination of torsional stiffness for a specific operating point outside the nominal range Flender must be consulted. A variant with an E-spacer is available for each N-ARPEX type. This has been machined all over in accordance with the requirements of API 610 and 671. Particularly for large shaft distances S and therefore for correspondingly long intermediate spacer it is usual to leave the inside and outside diameters of the tube in the condition in which it was delivered. These spacers are then referred to as H-spacers. Variant with E spacer Variant with H spacer Size Type m J C - - - - 103-6 NHN 1.91 + 0.008 ⋅ S 0.003 + 0.000007 ⋅ S 1/(1/0,09 + S/68) 86-6 NHN 1.11 + 0.005 ⋅ S 0.001 + 0.000003 ⋅ S 1/(1/0,05 + S/25) MCHCM 3.28 + 0.008 ⋅ S 0.006 + 0.000007 ⋅ S 1/(1/0,1 + S/68) MFHFM 6.56 + 0.008 ⋅ S 0.016 + 0.000007 ⋅ S 1/(1/0,1 + S/68) 122-6 NHN 3.72 + 0.01 ⋅ S 0.008 + 0.000012 ⋅ S 1/(1/0,21 + S/122) - - - - - - - - MCHCM 6 + 0.01 ⋅ S 0.014 + 0.000012 ⋅ S 1/(1/0,22 + S/122) MFHFM 5.03 + 0.005 ⋅ S 0.01 + 0.000003 ⋅ S 1/(1/0,06 + S/25) DA kg kgm2 MNm/rad MCHCM 2.13 + 0.005 ⋅ S 0.003 + 0.000003 ⋅ S 1/(1/0,06 + S/25) MFHFM 11.82 + 0.01 ⋅ S 0.041 + 0.000012 ⋅ S 1/(1/0,22 + S/122) MCHCM 27.42 + 0.027 • S 0.174 + 0.0001 • S 1/(1/1,33 + S/1049) MFHFM 22.95 + 0.02 • S 0.139 + 0.000065 • S 1/(1/0,57 + S/652) MCHCM 21.18 + 0.023 • S 0.074 + 0.000083 • S 1/(1/0,95 + S/839) MCHCM 15.46 + 0.02 • S 0.073 + 0.000065 • S 1/(1/0,57 + S/652) 159-6 NHN 7.17 + 0.017 ⋅ S 0.025 + 0.000037 ⋅ S 1/(1/0,45 + S/373) - - - - 184-6 NHN 12.36 + 0.023 • S 0.059 + 0.000083 • S 1/(1/0,89 + S/839) MCHCM 7.29 + 0.013 ⋅ S 0.021 + 0.000022 ⋅ S 1/(1/0,29 + S/221) MFHFM 14.71 + 0.013 ⋅ S 0.062 + 0.000022 ⋅ S 1/(1/0,29 + S/221) MFHFM 19.78 + 0.017 ⋅ S 0.064 + 0.000037 ⋅ S 1/(1/0,47 + S/373) - - - - 203-6 NHN 16.56 + 0.027 • S 0.093 + 0.0001 • S 1/(1/1,23 + S/1049) - - - - MFHFM 46.52 + 0.027 • S 0.403 + 0.0001 • S 1/(1/1,33 + S/1049) - - - - - - - - 133-6 NHN 4.52 + 0.013 ⋅ S 0.012 + 0.000022 ⋅ S 1/(1/0,28 + S/221) 174-6 NHN 8.79 + 0.02 • S 0.036 + 0.000065 • S 1/(1/0,55 + S/652) MCHCM 12.76 + 0.017 ⋅ S 0.051 + 0.000037 ⋅ S 1/(1/0,47 + S/373) MFHFM 34.65 + 0.023 • S 0.259 + 0.000083 • S 1/(1/0,95 + S/839) MFEFM 25.02 + 0.013 • S 0.146 + 0.000039 • S 1/(1/0,68 + S/394) 203-6 NEN 18.62 + 0.019 • S 0.102 + 0.00007 • S 1/(1/1,44 + S/705) 184-6 NEN 13.94 + 0.017 • S 0.065 + 0.000059 • S 1/(1/1 + S/597) 122-6 NEN 4.39 + 0.007 • S 0.009 + 0.000008 • S 1/(1/0,26 + S/82) MFEFM 36.59 + 0.017 • S 0.267 + 0.000059 • S 1/(1/1,11 + S/597) MCECM 4 + 0.005 • S 0.006 + 0.000004 • S 1/(1/0,12 + S/42) DA kg kgm2 MNm/rad MCECM 2.64 + 0.003 • S 0.003 + 0.000002 • S 1/(1/0,09 + S/15) MCECM 8.44 + 0.009 • S 0.023 + 0.000014 • S 1/(1/0,36 + S/142) BEB 2.01 + 0.005 • S 0.003 + 0.000004 • S 1/(1/0,1 + S/42) BEB 5.09 + 0.009 • S 0.011 + 0.000014 • S 1/(1/0,27 + S/142) MFEFM 15.86 + 0.009 • S 0.064 + 0.000014 • S 1/(1/0,36 + S/142) BEB 1.42 + 0.003 • S 0.001 + 0.000002 • S 1/(1/0,06 + S/15) MFEFM 12.6 + 0.007 • S 0.042 + 0.000008 • S 1/(1/0,29 + S/82) BEB 4.19 + 0.007 • S 0.008 + 0.000008 • S 1/(1/0,2 + S/82) 103-6 NEN 2.52 + 0.005 • S 0.004 + 0.000004 • S 1/(1/0,11 + S/42) MFEFM 5.54 + 0.003 • S 0.01 + 0.000002 • S 1/(1/0,09 + S/15) MCECM 6.78 + 0.007 • S 0.015 + 0.000008 • S 1/(1/0,29 + S/82) 159-6 NEN 8.54 + 0.011 • S 0.028 + 0.000023 • S 1/(1/0,54 + S/234) BEB 8 + 0.011 • S 0.026 + 0.000023 • S 1/(1/0,45 + S/234) 133-6 NEN 5.5 + 0.009 • S 0.013 + 0.000014 • S 1/(1/0,33 + S/142) MCECM 14.35 + 0.011 • S 0.055 + 0.000023 • S 1/(1/0,6 + S/234) 86-6 NEN 1.55 + 0.003 • S 0.001 + 0.000002 • S 1/(1/0,08 + S/15) MFEFM 21.37 + 0.011 • S 0.068 + 0.000023 • S 1/(1/0,6 + S/234) 174-6 NEN 10.57 + 0.013 • S 0.042 + 0.000039 • S 1/(1/0,64 + S/394) MCECM 17.54 + 0.013 • S 0.08 + 0.000039 • S 1/(1/0,68 + S/394) BEB 11.36 + 0.013 • S 0.041 + 0.000039 • S 1/(1/0,52 + S/394) MFEFM 7.28 + 0.005 • S 0.017 + 0.000004 • S 1/(1/0,12 + S/42) Size Type m J C BEB 15.1 + 0.017 • S 0.066 + 0.000059 • S 1/(1/0,81 + S/597) MCECM 23.12 + 0.017 • S 0.081 + 0.000059 • S 1/(1/1,11 + S/597) BEB 18.09 + 0.019 • S 0.096 + 0.00007 • S 1/(1/1,13 + S/705) MFEFM 49.06 + 0.019 • S 0.414 + 0.00007 • S 1/(1/1,65 + S/705) MCECM 29.96 + 0.019 • S 0.185 + 0.00007 • S 1/(1/1,65 + S/705)
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