Elastic plate muffs type МК

elastic-plate-muffs-type-mk

Designation and usage

Elastic plate muffs type МК are designed to transmit the torsional moment from drive to pumps, compressors, smoke exhausters and other rotation devices which are to be used at oil and gas, chemical, metallurgical and other industrial areas.

Operation

The principle of elastic plate muffs operation is based on transmition the torsional moment between shafts through bags of thin metal sheets. At this time the mutual angle, axial and radial shaft misalignment can be compensated only with elastic deformation of sheet bags. The muff is consisted in two half-muffs and spacer plate with two bags of elastic units. The spacer plate is fixed to half-muffs with screw.

Benefits

Having compared the tooth muffs and pin coupling, the plate muffs are available to:

  • reduce the vibration level;
  • enhance in-use life of pump and compressor support and end compaction;
  • make possible the axial misalignment of joint rotors aiming to take the working position while start (alignment of magnetic axis of electro drive rotor and stator, setting the working gap into hydraulic balancing device);
  • exclude lubrication supply and maintenance.
Main technical characteristics of muffs type МК
Muff’s type Transmitting torsional moment, Н×м Transmitting power, кW*, while Size, mm Permitted relative shaft misalignment Minimum axial distance between edges of connecting shafts, mm Weight, kg while В min
Nominal Мах. short-term n=1000 rotation/min n=3000 rotation/min Ø А Ø Б max В min Г Radial, mm Axial, mm Angle, °
МК 2-17 150 395 17 51 100 45 100 40 0,35 ± 2,0 0,5 90 7
МК 2-34 315 787 34 102 125 60 100 40 0,45 ± 2,8 0,5 95 11
МК 2-67 630 1575 67 201 150 75 120 55 0,55 ± 3,2 0,5 110 16
МК 2-105 1000 2500 105 315 150 75 120 65 0,35 ± 2,0 0,5 110 17
МК 2-270 2500 6250 270 810 180 80 140 80 0,5 ± 2,2 0,5 140 30
МК 2-420 4000 10000 420 1260 220 100 160 90 0,6 ± 3,0 0,5 160 50
МК 2-670 6300 15750 670 2010 255 120 180 105 0,7 ± 3,8 0,5 170 80
МК 2-1050 10000 75000 1050 3150 285 130 200 120 0,75 ± 4,0 0,5 170 103
МК 2-1340 12500 31250 1340 4020 310 160 200 140 0,75 ± 4,0 0,5 200 120