MK-2 type couplings – ТОВ НВП "Насостехкомплект"

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).

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 S_me, mm	Bore diameter of half-couplings d_max, mm	Transmission unit weight		Weight of unbored coupling half standard, kg
Coupling nominal size	Standard length of coupling half L, mm	Coupling outer diameter D, mm		Bore diameter of half-couplings d_max, mm	At S_me, kg	+ΔS=10мм, kg	Weight of unbored coupling half standard, 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
Coupling nominal size	Specific power kW / 1000 rpm	Nominal, Nm	Peak overload, Nm	Maksim. turnovers, rpm.	Maksim. revolutions without balancing, rpm.	± mm	Equivalent. an effort, n	Max. radial displacement, ±мм
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