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Nuflex
Flexible Gear Couplings |
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Nu-Teck manufactures straight tooth
Gear Coupling and Tripple Crowned Teeth Gear Coupling.
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Disadvantage
in Straight Tooth Gear Couplings are, |
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Under the misalignment condition
of two shafts of the equipments, the teeth contact
in case of straight cut hub will be as minimum
as shown in the fig No.1
Under heavy loads the ends of the hub teeth will
get damaged resulting in the excessive play between
hub & sleeve and therefore the reduction in
life of coupling
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| Nu-Teck Tripple
Crowned Teeth Gear Coupling |
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The triple crowned teeth hub
is manufactured on a fully automatic hobbing machine
with built in crowing attachment which is controlled
by hydraulic & electronic systems.
Under the misalignment condition of two shafts
on the equipment, due to the curvature on teeth
flank the contact area is much more and therefore,
there is increase in life of coupling.
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Misalignment Details: In case
of straight tooth gear coupling the maximum allowable
angular misalignment ( ) is 1.1/2 deg. and in case of
NU-TECK Triple Crowned tooth Gear Coupling the misalignment
is 3.1/2 deg.
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SERVICE FACTOR
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PRIME MOVER
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Driven Unit (Machinery)
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Electric Motor or Steam Turbine
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Geasoline or Diesel Engine
4 or more Cyl.
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Gasoline or Diesel Engine
more than 6 Cyl.
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| LIGHT |
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Uniform of Steady load never
exceeding horse rating, infrequent starting :
Agitators, Blowers, Can Filling Machines, Conveyors,
Fans, Generators, Pumps, Steering Gear, Stokers.
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1.0
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1.5
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2.0
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MODERATE
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Heavy inertia, moderate shock,
frequent starting: peak loads do not exceed 125
percent average horsepower. Uneven load: Conveyorts,
Feeders, Welding Laundry Washers, Mixers Paper
Mills, Printing Presses, Screens, Textile Industry,
Car Pullers.
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1.5
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2.0
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2.5
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HEAVY
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Heavy shock conditions or frequent
reverseing peak loads do not exceed 150 percent
average horse power. Uneven load : Cranes &
Hoists, Crushers, Dredges, Elevators, Hammer Mils,
Lumber Industry. Machine Tools,, Metal Mills,
Oil Industry, Rubber Industry Windlass.
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2.0
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2.5
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3.0
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COMMON
FOR BOTH COUPLINGS
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FULL
FLEXIBLE TYPE
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HALF
FLEXIBLE TYPE
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NU-TECK
G.C. No.
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H.P.
capacity AT 100 R.P.M.
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Max.
Torque Kg. M.
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Max.
R.P.M.
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Bore
Min.
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A
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C
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D
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F
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M
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G
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H
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Bore
Max.a
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J
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B
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WR2
Kgm2
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Wt
in
Kg
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K
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Q
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Bore
Max.
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F1
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WR2
Kgm2
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Wt
in
Kg.
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GC-100
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7
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50
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8000
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10
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120
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45
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50
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75
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55
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1.5
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1.5
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32
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40
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93
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0.03
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4.5
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93
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46.5
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45
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70
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0.04
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5
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GC-101
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14
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100
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6300
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20
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170
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55
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65
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110
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65
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2.5
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17
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45
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49
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115
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0.14
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11
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115
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57.5
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60
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85
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0.15
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11
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GC-102
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35
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250
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5000
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30
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185
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70
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85
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125
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80
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2.5
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27
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60
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62
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145
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0.20
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15
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145
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72.5
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75
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110
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0.24
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15
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GC-103
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63
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450
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4000
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40
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220
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85
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105
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150
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105
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2.5
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20
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75
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78
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175
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0.48
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25
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175
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87.5
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90
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130
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0.51
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20
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GC-104
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119
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850
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3350
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50
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250
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105
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130
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175
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125
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2.5
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20
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90
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96
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215
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0.95
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39
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215
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107.5
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110
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160
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1.0
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40
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GC-105
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182
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1300
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2800
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60
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290
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110
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155
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200
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140
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5
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25
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110
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106
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230
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1.90
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57
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230
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115
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130
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185
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2.0
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60
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GC-106
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280
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2000
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2500
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75
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320
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125
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175
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230
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155
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5
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25
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125
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117
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260
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3.00
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85
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260
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130
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150
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215
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3.3
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80
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GC-107
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490
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3500
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2100
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90
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350
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140
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205
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260
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175
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5
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25
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140
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134
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290
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5.25
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103
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290
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145
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170
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240
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5.8
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106
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GC-108
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630
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4500
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1900
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105
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380
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155
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230
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290
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190
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5
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25
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160
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147
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320
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8.50
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138
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320
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160
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200
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285
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9.5
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149
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GC-109
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784
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5600
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1700
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125
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430
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165
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250
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330
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205
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5
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27
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180
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156
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340
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15.00
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210
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340
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170
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220
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315
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16.8
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170
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GC-110
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1148
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8200
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1400
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140
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490
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180
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310
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390
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220
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5
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27
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220
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171
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370
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30.50
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277
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370
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185
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260
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370
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35.0
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264
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GC-111
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1536
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11000
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1250
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160
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545
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200
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350
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445
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240
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5
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30
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260
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192
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410
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58
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550
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GC-112
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2053
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14700
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1120
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180
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590
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240
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400
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490
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280
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5
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30
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300
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231
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490
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88
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710
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GC-113
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2793
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20000
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1000
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200
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680
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260
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440
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555
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310
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7.5
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35
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330
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242
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535
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138
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980
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GC-114
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3994
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28600
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900
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220
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730
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280
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500
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610
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330
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7.5
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35
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370
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266
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575
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291
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1320
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GC-115
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4852
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34750
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800
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250
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780
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320
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540
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660
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370
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7.5
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35
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410
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305
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655
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353
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1700
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Nuflex
Flexible Gear Couplings for Sugar, Steel & Rubber
manufacturing machineries |
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Coupling
No.
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Pilot
Bore
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Max.
Bore
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Max.
Torque
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Max.
Speed
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WT
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H.P.
Capacity at 100 RPM
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Moment
of Insersia Kgm2
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A
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B
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C
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D
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E
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F
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G
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H
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M
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114
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220
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370
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28600
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900
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1320
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3994
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291
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730
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610
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500
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261
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570
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35
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280
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10
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340
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115
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250
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410
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34750
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800
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1700
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4852
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353
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780
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660
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540
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305
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655
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35
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320
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15
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385
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115
M
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300
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420
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53570
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750
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2000
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7480
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500
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825
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690
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558
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315
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690
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45
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335
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20
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400
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116
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300
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455
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60000
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710
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2550
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8378
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691
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900
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755
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625
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330
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720
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45
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350
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20
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420
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116
M
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330
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480
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72000
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670
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3100
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10145
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965
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950
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805
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680
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340
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770
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45
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375
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20
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460
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117
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375
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520
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85350
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630
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3620
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11917
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1235
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1000
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720
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380
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820
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45
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400
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20
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490
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NOTE : |
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1. |
Made to order / special Gear
Coupling also can be manufactured
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2. |
Dynamic balancing
& Heat Treatment will be done on request |
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3. |
We also manufacture
gear coupling with spacer & cordon shaft. |
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How to select
the right Nuflex Gear Couplings ? |
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1. |
Select the size Nuflex Coupling
that will accomodate the diameter of the largest
shaft. Usually this will determine the proper
size Coupling for your condition.
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2. |
To make sure this Coupling has
the required capacity:
a) Check your application against the Service
Factor Chart. Use the following formula to ontain
HP per 100 RPM of your application
HP x Service Factor x 100 / RPM = HP / 100
RPM
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Lubrication |
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Gear Couplings must be filled with
proper grade of Grease or Oil while installation and
periodically also. It is recommanded to use grease where
the maximum temperature is within 80 oC and
for temperature above 80 oC oil should be
used. We suggest to use following grades of grease /
Oil for a good performance.
For speed above 1500 RPM use oil SERVOMESH
A-90 of Indian Oil Corporation having viscosity 91 C/S
at 100 oC or of 324 = 35 cst/50 oC
(43 o Engler / 50 oC) OR equivalant.
For lesser speeds use grease with high
pressure additives like SERVOPLEX EP - 1 of Indian Oil
Corpn. or SHELL ALVAMIA EP - 2 or lithium/sodium grease
with EP / additives drop over 180 degree C grade of
penetration.
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