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COUPLINGS TYPE MK 2

MK (compensating coupling) - has an optimal set of technical, operational and economic indicators. It is recommended for using in the energy, oil and petrochemical industries. Allows using in hazardous and explosive fire-hazardous areas of class B-1a and B-1g according to the "Rules for the Installation of Electrical Installations", in which the formation of an explosive mixture of category IIA-T3 according to GOST 12.1.01-78.

MK Couplings have a "cartridge" (in other terms, "Cartridge") design, which provides easy installation and disassembly of the removable part and excludes contact of personnel directly with the package of elastic elements. Such a solution also makes it possible to eliminate the most common cause of sudden coupling failures - which is a personnel error in tightening tight fittings. The coupling provides the torque transmission after the emergency destruction of the elastic element as well as the protection from the spacer “overhang” and sparking due to the using of special bronze inserts. These design features comply with the requirements of the international standard API 671 / ISO 10441 (MSECM type).
- Complies with the requirements of the Technical Regulations of the Customs Union TRTS 012/2011 "Equipment safety for using in explosive atmospheres"

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SPECIFICATIONS

MK-2 - dimensions
Coupling nominal size Standard length of coupling half L, mm Coupling outer diameter D, mm The minimum distance between the ends of the shafts Sme, mm Bore diameter of half-couplings dmax, mm Transmission unit weight Weight of unbored coupling half standard, kg
At Sme, kg +ΔS=10мм, kg
MK2-17 65 100 80 50 4,3 0,06 1,8
MK2-34 90 125 100 70 8,0 0,10 3,4
MK2-67 110 152 120 85 15,1 0,13 6,2
MK2-105 110 152 120 85 15,3 0,13 6,2
MK2-270 110 180 140 90 20,3 0,18 8,1
MK2-420 150 220 160 120 40,5 0,32 17,0
MK2-670 170 255 180 140 49,6 0,65 22,0
MK2-1050 180 290 200 160 81,0 0,74 38,0
MK2-1340 180 305 180 170 96,7 0,92 45,0
MK2-1670 200 355 200 200 137,0 1,10 65,0

*Transmission unit length S performed, starting from size Smin and more in steps ΔS = 10mm., other sizes depending on the distance between the shafts are available on request. Length of half couplings L may differ from the standard, subject to filling out the questionnaire. dimensions AT and t pockets for fastening the coupling half with a nut are provided upon request when filling out the questionnaire.

Note: To determine the mass of the coupling assembly, it is necessary to add the mass of the two coupling halves with the mass of the transmission unit.. If not specified, the size of the cylindrical bore of the half couplings is made with an accuracy of H7 and the keyways Js9 are made according to DIN standards 6885.

MK-2 - technical data
Coupling nominal size Specific power kW / 1000 rpm Torque, Nm Maksim. turnovers, rpm. Maksim. revolutions without balancing, rpm. Max. axial displacement Max. radial displacement, ±мм
Nominal, Nm Peak overload, Nm ± mm Equivalent. an effort, n
MK2-17 17 160 395 20000 10000 1,8 400 0,35
MK2-34 34 315 787 16000 8500 2,4 500 0,45
MK2-67 67 630 1575 13500 7000 3,0 700 0,60
MK2-105 105 1000 2500 13500 7000 1,8 1100 0,35
MK2-270 270 2500 6250 11000 6000 2,6 1300 0,40
MK2-420 420 4000 10000 9000 4800 3,0 2600 0,75
MK2-670 670 6300 15750 7500 4200 3,4 3000 0,80
MK2-1050 1050 10000 25000 6800 3600 3,4 5000 0,60
MK2-1340 1340 12500 31250 6500 3400 3,4 4700 0,60
MK2-1670 1670 16000 40000 5500 3000 3,4 6500 0,60
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