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  >>>>> Bush Type Flexible Couplings

BUSH TYPE FLEXIBLE COUPLING SELECTION

The function of a flexible coupling is to transmit torque from one shaft to another and is particularly use full in case where limited misalignment may occur and also to absorb shock loads.
The Flexitech Bush Type Flexible Coupling of the cushioned drive type. Transmits the torque through high tensile steel bolts to the machine input shat. Highly developed rubber compounds are bushes to absorb loads. Torsional vibrations and slight misalignments.

Simple and compact in construction the Flexitech Coupling is capable of transmitting high torques at maximum speeds. The flanges are manufactured with cast iron, this type of coupling permits drive in either direction and require neither lubrication nor adjustment after fitting. The flexible business remains unaffected water, dust and atmospheric conditions.

Machines which are to be coupled by flexible couplings should first be aligned with all possible accuracy. The capacity of the coupling will then deal with misalignments which occur by reason of temperature variations or heavy shaft loading. Setting of machine foundations of bearing wear will also cause extra loading to be imposed on the coupling. Any or all of these conditions can occur once the machines have been coupled. Flanges are bored to suit requirements and are mayweed to British Standard Specification, unless otherwise stated. They can also be supplied with the listed minimum bore to permit machining on site.

Table 1: SERVIE FACTORS PRIME MOVER
Driven Machine Electric Motor Steam Turbine Shafting Steam Engine Water Turbine IC Engine Multi Cylinder IC Engine Single Cylinder Diesel MultiCylinder Diesel Engine Single Cylinder
Heavy Rolling Mill Drives; Continuous, Prolonged & Reversing Drives; Severe Traction and Haulage Loads. 2.25 2.50 2.75 3.50 3.75
Single Crank Compressors & Pumps; Hammers; Ball & Tube Mill; Rolling Mills (light) ; Shearing Machines; Punches; Rock & Stone Crushers; Brick Making and similar Machines; Printing Presses (large); Grinders; Pulverizes; Cranes & Winches; Mechanical Shovels & Dredges; Winding Gears and Drums. 2.00 2.25 2.50 3.25 3.50
Wire Mills; Cement Mills; Small Printing Presses. 1.75 2.00 2.25 3.00 3.25
Multi-Crank Compressors and Pumps; Generators (fluctuating loads); Rotary Dryers & Screens; Rotary Compressors; Planers; Wood – Working
Machines (heavy); Pulp Grinders; Shakers; Mine Fans
1.50 1.75 2.00 2.75 3.00
Machine Tools (light); Beaters; Exhausters; Wood –Working Machines (light); Alternators; Welding Generators; Textile Machines. 1.25 1.50 1.75 2.25 2.75
Even Torque Machines; Smooth Loads, Generators; Centrifugal Pumps; Blower; Small Fans; Line Shafting. 1.00 1.25 1.50 2.00 2.50



TABLE2: DIMENSIONS

SIZE

No. of Pins

Torque Nm

Min Bore
(mm)

Max. Bore (mm)

Max.Speedrev/min

A

B

C

D

E

F

FBC1

3

77

12.7

28

6100

95

79

38

3

40

58

FBC2

4

310

12.7

30

5100

114

99

48

3

42

70

FBC2A

6

516

16

42

4400

130

105

51

3

60

70

FBC3

4

621

16

48

3600

160

107

51

5

68

114

FBC4

4

831

20

65

3000

191

125

60

5

90

114

FBC4A

6

1241

FBC5

6

1662

25

75

2600

225

157

76

5

105

114

FBC6

8

2359

45

95

2300

254

183

89

5

135

114

FBC6A

10

2932

FBC6B

12

3533

FNBC7

12

4154

60

115

1950

290

235

115

5

170

114

FNBC7A

14

5195

60

120

1900

300

235

115

5

180

130

FNBC8

16

5816

65

130

1850

310

255

125

5

195

130

FNBC8A

18

7268

65

135

1650

340

265

130

5

200

130

FNBC8B

12

8729

70

140

1590

360

276

135

6

210

200

FNBC9

13

9932

80

150

1470

390

316

155

6

225

200

FNBC9A

15

13274

90

160

1400

410

336

165

6

240

200

FNBC10

16

14420

100

170

1300

440

366

180

6

255

200

FNBC10A

17

18050

110

180

1200

480

386

190

6

270

212

FNBC11

20

23780

120

190

1080

530

406

200

6

285

212

 
 
 
 
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