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 coupling1.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.Nylon gear flexible coupling is the latest product,it has been using by abroad,and it is designed by mechanical committee of Jinan Casting forging machinery institute.Features of NL gear coupling:1.Absorb parallel,angular and axial misalignments2.Simple assembly and disassembly3.Easy maintenance and low noise4.High tansmission efficiency5.Long service life

Type

Nominal torqueTn (N.M)

Max speedn (r/min)

Fundamental dimensions (mm)

Max misalignment

Moment of inertia(KgC m 2 )

Mass(Kg )

Bore diameterd1 d2

Bore lengthL 1 L 2

L

D

D1

D2

E

L3

Axial

(mm)

Parallel

(mm)

Angular

α°

NL1

40

6000

6 8 10

16 20

25 32

37 45

55 69

40

26

4

34

2

±0.3

1°

0.25

0.85

12 14

NL2

100

6000

10 12 14 22

25 32

42 52

57 71

91 111

42

36

4

40

2

±0.4

1°

0.92

1.7

16 18 20 24

NL3

160

6000

20 22 24

52 62

113

133

66

44

4

46

2

±0.4

1°

3.10

2.6

25 28

NL4

250

6000

28 30 32

62 82

129

169

83

58

4

48

2

±0.4

1°

8.69

3.6

35 38