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  • Name: DC gear coupling
  • NO.: 0200
  • Release time: 2013-04-01
  • Views : 171

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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

Crowned teeth coupling is a new kind flexible coupling which used in the connecting between drum and reducer in crane.

Features of DC gear coupling:

1.Steady and credible structure,it can predigest whole machines structure,reducing equipments weght

2.With well orientation capability,it is convinient for intalling and adjusting and easy maintance.

3.With orientation abrasion airetion ,it is very safety.

Type

Max speed

Nominal torque

Load on radial

Bore

Dimensions

Abrasion scale

Axial clearance

Loading place

Moment of inertia

Mass

Diameter

Length

nmax

Tmax

Frmax

dmax(H7)

Lmin

D

D1(h6)

D2(h9)

 L1

L2

L3

L4

L5

L6

S(h9)

Ф2

n-d2

Bolt

a

d3

r

m1

Xmax

e

I

m

r/min

N.m

N

mm

mm

mm

mm

Kg.

Kg

DC01A
DC01B

200

16000

18000

110

185

400

280

180

80

85

15
20

25

26

11

360

360

1018

M16

30

M16

2.5

1.0

±2.5

88

1.0

80

DC02A
DC02B

200

22400

25000

125

200

420

310

212

80

95

15
20

25

26

11

380

380

1018

M16

30

M16

2.5

1.0

±2.5

88

1.5

100

DC03A
DC03B

200

31500

35500

150

225

450

340

230

80

105

20

25

34

11

400

400

1022

M20

30

M20

2.5

1.0

±2.5

88

2.5

120

DC35A
DC35B

200

45000

50000

160

235

510

400

250

95

115

20
25

30

34

15

460

460

1022

M20

30

M20

2.5

1.4

±2.5

106

3.0

150

DC04A
DC04B

200

63000

71000

200

250

550

420

280

95

130

20
25

30

34

15

500

500

1422

M20

20

M20

2.5

1.4

±2.5

106

4.5

190

DC05A
DC05B

200

90000

90000

220

265

580

450

215

95

145

20
25

30

34

15

530

530

1422

M20

20

M20

2.5

1.4

±2.5

110

7.25

245

DC55A
DC55B

200

125000

112000

240

290

620

500

345

101

160

25
30

35

35

19

560

560

2022

M20

13.3

M20

2.5

1.8

±2.5

110

10.3

330

DC06A
DC06B

200

160000

140000

260

300

650

530

375

101

170

25
30

35

35

19

580

600

2022

M20

13.3

M20

2.5

1.8

±2.5

116

15.5

385

DC65A
DC65B

200

190000

165000

270

300

665

545

387

101

175

25
30

35

35

19

590

615

2622

M20

10

M20

4

1.8

±2.5

116

18.3

435

DC07A
DC07B

200

224000

180000

280

310

680

560

400

101

180

25
30

35

35

19

600

630

2622

M20

10

M20

4

1.8

±2.5

116

21.4

485

DC08A
DC08B

200

315000

224000

300

345

720

600

437

111

185

35

43

35

21

640

660

2626

M24

10

M24

4

2.2

±2.5

118

30.6

550

DC09A
DC09B

200

450000

280000

340

380

780

670

487

111

200

35

43

35

21

700

730

2626

M24

10

M24

4

2.2

±2.5

118

40.2

650

DC10A
DC10B

200

560000

355000

380

420

850

730

545

111

215

35

43

35

21

760

800

2626

M24

10

M24

4

2.2

±2.5

120

65.1

890