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  • Name: NGCLZ gear coupling
  • NO.: 0199
  • Release time: 2013-04-01
  • Views : 88

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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

 

 

Type

Nominal torque

Tn

/N·m

Max speed [n]/r·min-1

Bore diameter

Bore length

L

D0

D

D1

D2

D3

C

C1

H

B1

B2

B3

Mass m/kg

Moment of inertia

I/

kg·m2

dZ

d1d2

Y

J1Z

NGCLZ1

355

4000

2035

202224

52

38

160

103

71

71

50

30

8

2

42

38

68

7.3

0.071

2528

62

44

7.4

0.072

303235

82

60

8.4

0.076

NGCLZ2

630

4000

2542

2528

62

44

160

115

83

83

60

39

8

2

48

42

68

9.2

0.081

30323538

82

60

10.3

0.084

404245

112

84

10.5

0.088

NGCLZ3

1000

3800

3042

28

62

44

200

127

95

95

75

39

8

2

49

42

85

15.1

0.181

30323538

82

60

16.3

0.184

404245485055

112

84

18.8

0.193

NGCLZ4

1600

3800

4055

38

82

60

200

149

116

116

90

46

8

2

53

42

85

19.8

0.225

40424548505556

112

84

23.3

0.242

606365

142

107

26.8

0.296

NGCLZ5

2800

3000

4575

40424548505556

112

84

250

167

134

134

105

47

9

2.5

58

42

105

33.3

0.596

606365707175

142

107

39

0.627

NGCLZ6

4500

3000

5075

4548505556

112

84

250

187

153

153

125

52

9

2.5

59

42

105

40

0.72

606365707175

142

107

46.4

0.776

808590

172

132

53.2

0.837

NGCLZ7

6300

2400

6080

505556

112

84

315

(300)

204

170

170

140

52

9

2.5

63

42

132

51.8

1.178

606365707175

142

107

59.8

1.254

80859095

172

132

68.2

1.348

100

212

167

79.6

1.479

NGCLZ8

9000

1900

7095

5556

112

84

400

230

186

186

155

57

12

3

77

47

168

84

3.734

606365707175

142

107

93.1

3.86

80859095

172

132

104

3.996

100110

212

167

117

4.187

NGCLZ9

14000

1500

75110

606365707175

142

107

500

256

212

212

180

64

13

3

80

47

210

133

9.43

80859095

172

132

146

9.663

100110120125

212

167

164

9.997

130

252

202

182

10.3

NGCLZ10

20000

1200

80150

65707175

142

107

630

(600)

287

239

200

120

65

15

3.5

90

47

265

176

28.238

80859095

172

132

190

28.509

100110120125

212

167

209

28.879

130140150

252

202

237

29.248

NGCLZ11

31500

1050

100170

707175

142

107

710

(700)

325

276

235

134

77

16

3.5

94

47

298

257

44.309

80859095

172

132

275

44.825

100110120125

212

167

300

45.53

130140150

252

202

326

46.235

160170

302

242

357

47.08

NGCLZ12

45000

1050

100200

75

142

107

710

(700)

362

313

270

164

94

17

4

104

49

298

306

47.88

80859095

172

132

317

48.29

100110120125

212

167

351

49.52

130140150

252

202

384

50.25

160170180

302

242

425

52.22

190200

352

282

464

53.69

NGCLZ13

63000

950

150220

150

252

202

800

412

350

300

165

88

18

4.5

113

49

335

490

82.7

160170180

302

242

544

84.7

190200220

352

282

596

86.67

NGCLZ14

100000

950

170220

170180

302

242

800

462

420

335

209

92

20

5.5

157

63

335

670

99.1

190200220

352

282

736

102.2

240250

410

330

785

105.9

Key words : gear coupling