Flange coupling

时间：2013-08-01 17:58　作者：admin　点击： 次
Flange coupling detailed parameters
Flange coupling is a rigid coupling. It connects two flanged half couplings to the two shafts with ordinary flat keys, and then connects the two half couplings into one body with bolts to transmit motion And torque.
Flange couplings have high requirements for the neutrality of the two shafts. When there is relative displacement between the two shafts, additional loads will be caused in the machine parts and the working conditions will deteriorate. This is its main shortcoming, but due to the structure It is simple, low cost, and can transmit large torque, so when the speed is low, there is no impact, and the rigidity of the shaft is large.The material of the flange coupling can be gray cast iron or carbon steel, and cast steel or forged steel should be used for heavy loads or when the peripheral speed is greater than 30 m/s.Flange couplings have high requirements on the neutrality of the two shafts. When the two shafts have relative displacement, they will cause additional loads in the machine parts and worsen the working conditions. This is its main disadvantage.However, due to its simple structure, low cost, and large torque transmission, it is often used when the speed is low, there is no impact, the shaft is rigid, and the neutrality is good.

 

There are two main structural forms of flange couplings:
1. Rely on the reamed hole and use the bolt to realize the two-axis centering and rely on the bolt rod to bear the extrusion and shear to transmit the torque;
2. It is centered by matching the convex shoulder on one half coupling with the groove on the other half coupling.
The bolts connecting the two half-couplings can be ordinary bolts of grade A and B, and the torque is transmitted by the frictional moment of the joint surface of the two half-couplings.
The material of the flange coupling can be gray cast iron or carbon steel, and cast steel or forged steel should be used under heavy load or when the peripheral speed is greater than 30 m/s.

 

Basic parameters and main dimensions of GY, GYS, GYH flange couplings (GB/T 5843-2003) (Unit: mm) 
model Nominal torque Tn(Nm) Allowable speed [n]r/min Diameter of shaft hole Length of shaft hole D b b1 S Moment of inertia Kg.m2 Mass kg
d1 d2 Y type J1 type
GY1
GYS1
GYH1		 25 12000 12,14 32 27 80 26 42 6 0.0008 1.16
16,18,19 42 30
GY2
GYS2
GYH2		 63 1000 16,18,19 42 30 90 28 44 6 0.0015 1.72
20,22,24 52 38
25 62 44
GY3
GYS3
GYH3		 112 9500 20,22,24 52 38 100 30 46 6 0.0025 2.38
62 44
25,28
GY4
GYS4
GYH4		 224 9000 25,28 62 44 105 32 48 6 0.003 3.15
30,32,35 82 60
GY5
GYS5
GYH5		 400 8000 30,32,35,38 82 60 120 36 52 8 0.007 5.43
40,42 112 84
GY6
GYS6
GYH6		 900 6800 38 82 60 140 40 56 8 0.015 7.59
40,42,45,48,50 112 84
GY7
GYS7
GYH7		 1600 6000 48,50,55,56 112 84 160 40 56 8 0.031 13.1
60,63 142 107
GY8
GYS8
GYH8		 3150 4800 60,63,65,70,71,75 142 107 200 50 68 10 0.103 27.5
80 172 132
GY9
GYS9
GYH9		 6300 3600 75 142 107 260 66 84 10 0.319 47.8
80,85,90,95 172 132
100 212 167
GY10
GYS10
GYH10		 10000 3200 90,95 172 132 300 72 90 10 0.720 82.0
100,110,120,125 212 167
GY11
GYS11
GYH11		 25000 2500 120,125 212 167 380 80 98 10 2.278 162.2
130,140,150 252 202
160 302 242
GY12
GYS12
GYH12		 50000 2000 150 252 202 460 92 112 12 5.923 285.6
160,170,180 302 242
190,200 352 282
GY13
GYS13
GYH13		 100000 1600 190,200,220 352 282 590 110 130 12 19.978 611.9
240,250
410 330

Note: The mass and moment of inertia are calculated based on the Y/J1 shaft hole combination of the GY coupling and the minimum shaft hole diameter

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