AGMA Grid Coupling AGMA Gear Coupling Pin Bush Coupling Gear Coupling Tyre Type Coupling Jaw Coupling
 
Features :
Gear Couplings are mechanically flexible and designed to compensate angular and parallel misalignment automatically. Gear teeth are generated by involute system. Adequate care is taken to maintain the uniformity of teeth profile and pitch. Normally teeth are crowned. upto size LGC3 both hubs and casings of couplings are made of steel confirming to IS: 1030. From size LGC4-45C8 IS: 1570. teeth are heat treated to hardness of HB240-280 as per IS: 1240. 1988

Both are made of steel conforming to 45C8 of IS:1570 and are suitably hardened. Nuts conform to property class 4 of IS: 1367 1980. Sealing arrangement of the couplings are integral with casings upto size LGC3. Good quality wear resistant, "O" Rings can with stand a high degree of temperature upto 120° C. As the couplings are machined all over, no balancing is necessary as per IS:12405-1988. However for specific application, balancing of couplings can also be done as per client's requirement.
 
       
Table -1 : COMBINED SERVICE FACTOR TABLE;
DRIVEN UNITS Electric Motor Steam Turbine Water Turbine Steam Engine I.C Engine 4 or More Cyls. I.C Engine Upto 3 Cyls.
Agitator Blower - Centrifugal, Bottling Machinery Compressors, centrifugal, Conveyors-Belt. Chain: Dynamometer, Exciter, Fan (Upto .5 K.W) Centrifugal: Food Industry - Cereal Cooker: Generator-Even Load, Line Shaft, Machine Tools- General Machine : Paper Mills-Agitator Bleacher : Pumps- Centrifugal: Screen - Air Washing : Sewage Disposal Equipment Stocker, Textile Mills Barcher , Dyeing Machinery.
1.0 1.5 2.0 2.5
Blower- Vane & Lobe : Compressors- REciprocating: Conveyors - Screwfans-heavy (Above 7.5 K.W.) Propeller (Indoor), Food Industry- Beat Slicer, Dought Mixer, Meet Grinder, Generator hoist or Railway Service Elevators-Centrifugal or Gravity Discharge , Excalators, Machine Tools- Punch press Mills Concrete, Paper Mills- Beater, Pulper, Winder : Printing Press: Propeller (Manne) Hammer Mill (Light Duly), Roller, Pumps-Rotary (Other than gear) : Screen-Coal & Sand (Rotary), Shredder, Textile Mills- Dry Can, Loom, Spinign & Tentering Frame, Timber Industry-Band Resaw, Circular Resaw, Planer. Rolls (Non Receiving), Slab Conveyor, Shorting Table, Wind Mill, Rubber Industry-Extruder.
1.5 2.0 2.5 3.0
Compressors-4 or more cyls. Crusher-Cane Elevators- Bicket, Freight, Fan-Cooling Tower Generator- Welder load, Metal Forming Machines, Paper Mill- Calander, Press, Pulp Grinder, Rubber Warming Mill, Shovel, Winches-Haulge
2.0 2.5 3.0 3.5
Compressors- Reciprocating-1 to 3 Cyls: Conveyor-Reciprocating, Crusher-Gyratory, Mills (Rotary Tyre), Ball Pebble, Road & Tube, Pumps-1 &2Cyl. Rubber Industry-Banbury Mixer, Winches-Mine Haulge.
2.5 3.0 3.5 4.0
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Table-2 : FULL GEAR COUPLING
SIZE POWER AT 100 RPM IN KW Maximum Torque in Nim HUB BORE DIA MAX SPEED DIMENSIONS Misalignment Wt. In KGS approx
A G H E F C B J      
      Max.           Normal Hubs reversed       No Of bolts Axial Parallel
LGC1 11 1100 50 6660 170 115 10 55 5 7 70 110 65 8 +
-0.5
0.8 9
LGC2 28 220 60 6100 190 145 10 70 5 9 85 135 85 10 0.95 14
LGC3 51 4920 5 5150 220 15 15 85 5 7 105 160 105 8 1.1 24
LGC4 97 9220 90 4500 250 215 15 105 5 9 130 190 125 10 1.3 40
LGC5 148 14320 110 3900 290 240 20 115 10 12 150 225 140 12 1.45 58
LGC6 228 21960 125 3500 330 262 20 125 10 14 175 250 155 10 +
-1.0
1.55 81
LGC7 392 37250 140 3200 350 290 20 140 10 16 200 20 15 12 1.8 102
LGC8 513 49180 160 3000 380 330 20 160 10 18 230 305 200 14 1.9 145
LGC9 645 61500 180 2600 430 340 20 165 10 20 250 330 210 10 2.25 175
LGC10 931 88800 220 2300 490 370 20 180 10 20 300 390 230 12 2.6 270
LGC11 1265 102800 250 2150 545 410 25 200 10 30 350 450 20 14 +
-2.0
3.3 400
LGC12 1600 152800 285 1950 590 490 25 240 10 30 400 490 300 16 3.5 600
LGC13 2890 275000 315 1500 680 535 35 260 15 35 420 555 325 12 +
-3.0
6.65 860
LGC14 3990 380000 355 1400 730 55 35 275 25 45 40 595 350 14 7.35 1050
LGC15 46 455000 385 1300 760 635 35 305 25 45 510 640 375 15 8.15 1300
LGC16 CALL                           8.55 2120
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Table-3 : HALF RIGID GEAR COUPLING
Coupling Size Power at 100 R.P.M Bore (Rigid Hub) Bore (Gear Hub) DIMENSIONS
K.W. H.P MIN MAX (Dia) MIN MAX (Dia) A B C C1 D1 D2 E F G H J
HG 00 6 8 10 42 10 35 120 5 50 60 39.5 46.5 45 3 93 15 54
HG 01 11 15 15 60 15 50 10 110 68 84 49 5.5 55 5 115 1 65
HG 02 26 35 25 75 25 60 185 125 85 105 62 72.5 0 5 145 17 80
HG 03 46 62 35 90 35 75 220 150 105 126 78 87.5 85 5 175 20 100
HG 04 88 118 40 110 40 90 250 175 130 155 96 107 105 5 215 20 125
HG 05 140 188 45 125 45 110 290 200 155 175 106 120 115 10 240 25 135
HG 06 210 282 60 140 60 125 320 230 175 196 117 130 125 10 260 25 145
HG 07 360 482 75 160 75 140 350 260 205 225 134 145 140 10 290 25 165
HG 08 40 629 90 180 90 160 380 290 230 252 147 165 160 10 330 25 190
HG 09 585 784 100 220 100 10 430 330 255 310 156 170 165 10 340 25 195
HG 10 86 1152 115 260 115 220 490 390 310 365 170 185 180 10 370 25 210
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MILL MOTOR TYPE GEAR COUPLING : DIMENSIONS CAN BE PROVIDED ON CALL

FOR THE SELECTION OF THE COUPLINGS THE FOLLOWINGS ARE REQUIRED:
1. TYPE OF DRIVEN MACHINE
2. POWER ABSORBED BY THE DRIVEN MACHINE.
3. PEAK LOAD
4. SPEED OF THE CONNECTING SHAFTS,
5. DIAMETER OF THE SHAFTS TO BE CONNECTED AND SPACE AVAILABLE FOR ACCOMMODATING THE COUPLING.
6. SURROUNDING TEMPERATURE
   
Example: A Gear Coupling is required to transmit 200Kw from an Electric Motor running at 960 Rev/Min to a crusher, considering the Peak load as 180% of full load, The motor shaft as 100mm and the crusher shaft as 110mm select a suitable Gear Coupling.
   
A) Service Factor: 2 (From Table 1)
B) At Peak of Load : 180% of Fullload, Design Power : 200*180/100*2=720Kw
C) Power to be Transmitted at 100 Rev/Min 720*100/960=75Kw.
D) Coupling Size: By Referring to Table 2, Coupling Size LGC4 has a Rating of 96KW at 100 Rev/Min the before range is 60mm to 110mm hence, Size LGC4 is selected for the application.
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