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. |
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| 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 |
|
| Top^ |
 |
| 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 |
|
| Top^ |
 |
| 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 |
|
| Top^ |
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. |
| |
Top^ |
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