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  • Name: TACL disc coupling
  • NO.: 0662
  • Release time: 2015-09-02
  • Views : 43

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Disc coupling: by definition, transmits torque from a driving to a driven bolt tangentially on a commobolt circle. Torque is transmitted between the bolts through a series of thin, stainless steel discs assembled in a pack. Misalignment is accomplished by deforming of the material between the bolts.

A disc coupling is a high performance motion control (Servo) coupling designed to be the torque transmitting element (by connecting two shafts together) while accommodating for shaft misalignment. It is designed to be flexible, while remaining torsionally strong under high torque loads. Typically, disc couplings can handle speeds up to 10,000 RPM.

There are two different styles of disc coupling:

Single Disc Style couplings are composed of two hubs (the ends of the coupling, which are typically made from aluminum, but stainless steel is used as well) and a single, flat, stainless steel disc spring

Double Disc Style coupling is also composed of two hubs, but has an additional center spacer sandwiching two disc springs. The center spacer can be made out of the same material as the hubs, but is sometimes available in insulating acetal, which makes the coupling electrically isolating.

The difference between the two styles is that single disc couplings cannot accommodate parallel misalignment due to the complex bending that would be required of the lone disc. Double disc styles allow the two discs to bend in opposite directions to better manage parallel offset. The discs are fastened to the hubs (and center spacer on double disc styles) with tight fitting pins that do not allow any play or backlash between the disc and the hubs. The discs can be bent easily and as a result, disc couplings have some of the lowest bearing loads available in a motion control coupling.

Torsionally stiff and still flexible, disc couplings are a great solution for high speed applications. The downside is that they are more delicate than the average coupling and can be damaged if misused. Special care should be taken to ensure that misalignment is within the ratings of the coupling.

Advantages of disc coupling

1.  Eliminates the need for lubrication and coupling maintenance

2.  Coupling can be inspected without disassembly

3.  Condition of disc packs can be inspected with a strobe light while the machine is running

4.  Note: It is not recommended that couplings be operated without coupling guards.

5.  Easy to assess equipment misalignment

6.  Torsionally rigid without any backlash

7.  No wearing parts

8.  Resistance to harsh environments

9.  Long life when properly sized and aligned

10. High power density (higher torque for a given outside diameter)

Model NO.

Power/Speed

(Kw/rpm)

Nominal torque

(KNm)

Peak torque

(KNm)

A

(mm)

AG

(mm)

B

(mm)

C max (mm)

F

(mm)

Wmax

(mm)

W available sizes

20# (seamless sleeve)

W available sizes

16Mn(seamless sleeve)

TACL6247

1.28

12.22

32

247

297

182

130

140

159

159x4.5152x5146x6

140x7

TACL6272

2.16

20.62

45

272

324

196

140

150

180

180x6168x6159x6

159x5146x8

TACL8302

3.46

33

78

302

350

224

155

165

180

180x7168x10

180x6168x8168x7

TACL8333

4.13

39.44

101

333

394

238

170

180

219

219x6203x8194x8

194x6180x8168x8

TACL8363

6.6

63

140

363

420

260

185

200

244

244x8219x10203x12

244x6.5219x8,203x10

TACL8396

8.5

81.11

197

396

452

280

200

215

272

272x10244x14219x16

272x10245x10219x14

TACL8425

11

105

217

425

487

294

210

230

272

272x10244x14219x16

272x10245x10219x14

TACL8457

14

133.7

320

457

527

322

230

240

298

298x12272x14

298x10272x12272x10

TACL8493

17

162.3

355

493

563

352

250

260

324

324x10298x12272x14

324x9298x10272x12

TACL0537

25

238.75

548

537

617

374

265

280

350

350x12,324x16

350x10324x14324x12

TACL0580

35

334.25

770

580

648

415

290

305

350

350x12,324x16

350x10324x14324x12

TACL0630

42

401.1

920

630

688

452

320

330

400

400x16376x18

400x14350x14