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  • Name: TGL gear coupling
  • NO.: 0193
  • Release time: 2013-04-01
  • Views : 124

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A gear coupling is a mechanical device for transmitting torque between two shafts that are not collinear. It consists of a flexible joint fixed to each shaft. The two joints are connected by a third shaft, called the spindle.

Each joint consists of a 1:1 gear ratio internal/external gear pair. The tooth flanks and outer diameter of the external gear are crowned to allow for angular displacement between the two gears. Mechanically, the gears are equivalent to rotating splines with modified profiles. They are called gears because of the relatively large size of the teeth.

Gear couplings and universal joints are used in similar applications. Gear couplings have higher torque densities than universal joints designed to fit a given space while universal joints induce lower vibrations. The limit on torque density in universal joints is due to the limited cross sections of the cross and yoke. The gear teeth in a gear coupling have high backlash to allow for angular misalignment. The excess backlash can contribute to vibration.

Gear couplings are generally limited to angular misalignments, i.e., the angle of the spindle relative to the axes of the connected shafts, of 4-5°. Universal joints are capable of higher misalignments.

Advantages of Tanso gear coupling

1. Lowest price based on large scale production.

2. High and stable quality level.

3. Widely used in various mechanical and hydraulic fields.

4. Compensation for axial, radial and angular misalignment.

5. Convenient axial plugging assembly.

6. No brittlement at low temperature.

7. Good slippery and frictional properties.

8. Resistance to chemical corrosion.

9. Rich experience working with big companies in this field.

Design advantages

The Flexible Coupling method of connecting rotating shafts is a vital and necessary technique. Large massive shafting, loosely mounted in sleeve bearings and merely joined together by rigidly bolted flanges, cannot provide efficient mechanical power transmission. Especially today, as machine designers and builders demand higher speeds, higher torques, and higher misalignment capacities, the need for “flexibly connecting” this equipment becomes apparent.

A flexible coupling is necessary since it is practically impossible to achieve and maintain perfect alignment of coupled rotating shafts. During initial assembly and installation, precise alignment of the shaft axes is not only difficult to achieve but in many cases it is economically unfeasible. During operation, alignment is even more difficult to maintain. Shaft misalignment – caused by uneven bearing wear, flexure of structural members, settling of foundations, thermal expansion, shaft deflection and other factors – is an operating certainty. Because these factors are extremely difficult to control, a flexible coupling serves as an ideal answer to compensate or minimize the effects of unavoidable misalignment and end movement of coupled shafts.

 

A flexible coupling must provide three basic functions:

1. Physically couple together two rotating shafts for efficient transmission of mechanical power, transferring the torque of one shaft to the other, directly and with constant velocity.

2. Compensate for all types of misalignment between rotating, connected shafts without inducing abnormal stresses and loads on connected equipment, and without tangible loss of power.

3. Compensate for end or axial movement of the coupled shafts, preventing either shaft from exerting excessive thrust on the other and allowing each to rotate in its normal position.

   

Three types of misalignment must be effectively accommodated by a flexible coupling.

1. Parallel Offset – axes of connected shafts are parallel, but not in the same straight line.

2. Angular – axes of shafts intersect at center point of coupling, but not in the same straight line.

3. Combined Angular-Offset – axes of shafts do not intersect at point of coupling and are not parallel.

  

Product description

 

Features of TGL gear coupling:

1.Materials: 2 sintered iron flex hubs, 1 nylon sleeve, and 2 Spirolox retaining rings

2.Compact, lightweight couplings

3.Low maintenance (no lubrication, retainers required) 

4.Minimum backlash; High torque, low inertia

5.Resistant to dirt, moisture, most chemicals

There are 3 types of TGL gear couplings:

Type

Nominal torque

Tn

/N·m

Max speed [n]/

r·min-1

Bore diameter

d1d2

Bore length L

J1

D

D1

B

B1

S

d

Mass m/kg

Moment of inertia

I/kg·m2

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

TGLA1

TGLB1

10

10000

67

16

40

-

25

38

-

17

-

4

-

0.2

-

0.00003

-

89

20

M5

1011

22

1214

27

TGLA2

TGLB2

16

9000

89

20

48

-

32

38

-

17

-

4

M5

0.278

-

0.00006

-

1011

22

1214

27

161819

30

TGLA3

TGLB3

TGLC3

31.5

8500

1011

22

56

58

36

42

52

19

-

4

M5

0.482

0.533

0.00012

0.00015

1214

27

24

161819

30

202224

38

TGLA4

TGLB4

TGLC4

45

8000

1214

27

66

70

45

46

-

21

26

4

M8

0.815

0.869

0.00033

0.0004

161819

30

56

202224

38

2528

44

TGLA5

TGLB5

TGLC5

63

7500

14

27

75

85

50

48

-

22

27

4

M8

1.39

1.52

0.00072

0.00088

161819

30

58

202224

38

2528

44

3032

60

TGLA6

TGLB6

TGLC6

80

6700

161819

30

82

90

58

48

58

22

27

4

M8

2.02

2.15

0.0012

0.0015

202224

38

2528

44

30323538

60

TGLA7

TGLB7

TGLC7

100

6000

202224

38

92

100

65

50

60

23

28

4

M8

3.01

3.14

0.0024

0.0027

2528

44

30323538

60

4042

84

TGLA8

TGLB8

TGLC8

140

5600

2224

38

100

100

72

50

60

23

28

4

M8

4.06

4.18

0.0037

0.0039

2528

44

30323538

60

40424548

84

TGLA9

TGLB9

TGLC9

355

4000

2528

44

140

140

96

72

85

34

41

4

M10

8.25

8.51

0.0155

0.0166

30323538

60

40424548505556

84

60636570

107

TGLA10

TGLB10

TGLC10

710

3150

30323538

60

175

175

128

95

95

45

45

6

M10

16.92

17.1

0.052

0.0535

40424548505556

84

606365707175

107

8085

132

TGLA11

TGLB11

TGLC11

1250

3000

40424548505556

84

210

210

165

102

102

48

48

8

M10

34.26

34.56

0.1624

0.165

606365707175

107

80859095

132

100110

167

TGLA12

TGLB12

TGLC12

2500

2120

505556

84

270

270

192

135

135

63

63

10

M16

66.42

66.86

0.4674

0.4731

606365707175

107

80859095

132

100110120125

167