JMIJ type diaphragm coupling

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    JMIJ type diaphragm coupling (JB/T 9147-1999)


     

      The diaphragm coupling is composed of several groups of diaphragms (stainless steel thin plate) which are alternately connected with two halves of the coupling with bolts. Each group of diaphragms is made up of several pieces. The diaphragms are divided into rod type and different shapes. The whole piece.
      ● The diaphragm coupling relies on the elastic deformation of the diaphragm to compensate for the relative displacement of the two shafts connected. It is a high-performance flexible coupling with metal elastic elements. It does not require lubrication, has a compact structure, high strength and long service life. No rotation gap, not affected by temperature and oil pollution, with acid resistance, alkali resistance, and corrosion resistance. It is suitable for shafting transmission in high temperature, high speed, and corrosive medium working conditions. It is widely used for shafting transmission of various mechanical devices. , Such as water pumps (especially high-power, chemical pumps), fans, compressors, hydraulic machinery, petroleum machinery, printing machinery, textile machinery, chemical machinery, mining machinery, metallurgical machinery, aviation (helicopter), high-speed power transmission of ships The system, after being dynamically balanced, is commonly used in high-speed transmission shafts.

      ● Compared with the gear coupling, the diaphragm coupling has no relative sliding, no lubrication, sealing, no noise, basically no maintenance, more convenient to manufacture, and can partially replace the gear coupling.Diaphragm couplings have been widely used in developed countries in the world. In practical applications, the intermediate shaft type is generally used to improve the performance of two-axis offset compensation.

    JMIJ type diaphragm couplingBasic parameters and main dimensions mm(JB/T 9147-1999)

    Model Nominal torque
    Tn /Nm
    Momentary maximum torque Tmax
    /Nm
    Permissible speed
    [n]
    /r.min -1
     
    Diameter of shaft hole d(H 7)
     
    Shaft hole shaft hole shaft hole shaft hole D t L2 Moment of inertia I/kg.m 2 ≈ Mass m/kg ≈
    Y type J, J1, Z, Z1 type L recommended
    L L L1
    JMIJ1 25 80 6000 14 32 - J1 type is 27 Z1 type is 20 35 90 8.8 100 0.0013 1.8
    16, 18, 19 42 30
    20, 22   38
    JMIJ2 63 180 5000 18, 19 42 - 30 45 100 9.5 100 0.002 2.4
    20, 22, 24 52 38
    25 62 44
    JMIJ3 100 315 5000 20, 22, 24 52 - 38 50 120 11 120 0.0047 4.1
    25, 28 62 44
    30 82 60
    JMIJ4 160 500 4500 24 52 - 38 55 130 12.5 120 0.0069 5.4
    25, 28 62 44
    30, 32, 35 82 60
    JMIJ5 250 710 4000 28 62 - 44 60 150 14 140 0.0153 8.8
    30-32-35 82 60
    40 112 84
    JMIJ6 400 1120 3600 32, 35, 38 82 82 60 65 170 15.5 140 0.0281 13.4
    40, 42, 45, 48, 50 112 - 84
    JMIJ7 630 1800 3000 40, 42 112 112 84 70 210 19 150 0.076 22.3
    45, 48, 50, 55, 56  
    60 142 107
    JMIJ8 1000 2500 2800 45, 48 112 112 84 80 240 22.5 180 0.1602 36
    50, 55, 56  
    60-63-65 142 107
    JMIJ9 1600 4000 2500 55, 56 112 112 84 85 260 24 220 0.2509 48
    60, 63, 65, 70, 71, 75 142   107
    80 172 132
    JMIJ10 2500 6300 2000 63, 65, 70, 71, 75 142 142 107 90 280 17 250 0.5195 85
    80-85-90 172 - 132
    JMIJ11 4000 9000 1800 75 142 142 107 95 300 19.5 290 0.8223 112
    80-85-90 172 172 132
    100, 110 212 - 167
    JMIJ12 6300 12500 1600 90, 95 172   132 120 340 23 300 1.4109 152
    100-110-120 212 167

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