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Backstops are used extensively on pumps used in the primary and secondary cooling systems of power generating equipment.
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Sprag Freewheel Clutch RSCI 180-300
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introduction

Sprag Freewheel Clutch RSCI 180-300

Feature

Type RSCI is a centrifugal lift off sprag type freewheel with the inner race rotating. Only the inner race is designed for freewheeling. 

Primarily designed as a backstop, this type can be also used as an overrunning clutch in crawl drives, where the overrunning speed is high but the driving speed is low and does not exceed the maximum driving speed shown in the table. Centering of the outer race must use the inner bore.The centering spigot must not contact the sprag cage. Please refer to page 76 (RSCI 20-130) for further information.


 

Size

Torque

Speeds

 

 

Number

 

 

Weight

dH7

TKN1)

nmax2)

nimin3)

nimax4)

D5)

D1h6

D2H7

z

L

I

 

 

[mm]

[Nm]

[min-1 ]

[min-1 ]

[min-1 ]

[mm]

[mm]

[mm]

 

 

[mm]

[mm]

[kg]

180

31500

115

285

1300

412

240

310

12

90

80

59

180M

50000

90

220

1300

422

240

310

18

120

120

92

180 II

63000

115

285

1300

412

240

310

24

160

160

116

180 II-M

100000

90

220

1300

425

240

310

24

240

240

190

220

42500

110

265

1100

470

290

360

16

105

80

90

220M

68000

85

205

1100

480

290

360

16

120

120

109

220 II

85000

110

265

1100

480

290

360

18

160

160

159

220 II-M

136000

85

205

1100

490

290

360

20

240

240

249

240

52000

105

250

1100

500

320

390

16

105

90

95

240 M

83000

80

195

1100

520

320

390

16

120

120

137

240 II

104000

105

250

1100

520

320

390

24

180

180

191

240 II-M

166000

80

195

1100

530

320

390

24

240

240

250

260

65000

100

240

1000

550

360

430

16

105

105

130

260M

100000

75

185

1000

580

360

430

24

125

125

183

260 II

130000

100

240

1000

580

360

430

24

210

210

262

260 II-M

200000

75

185

1000

580

360

430

24

250

250

369

300

78000

90

225

1000

630

410

480

24

105

105

174

300M

125000

70

175

1000

630

410

480

24

125

125

210

300 II

156000

90

225

1000

630

410

480

24

210

210

351

300 II-M

250000

70

175

1000

630

410

480

24

250

250

457

 

NOTES

1) T max = 2 × T KN

» Refer to Selection page 10 to 13

2) This maximum allowable torque transmission speed

n max must not be exceeded when transmitting torque

3) This minimum allowable overrunning speed ni imin

should not be reduced under continuous operation.

Possible reduction of this minimum speed on request

4) Inner race overruns

Keyway to DIN 6885.1

5) Tolerance +1

Cover F8 must be ordered seperately

» Refer to mounting and maintenance instructions

page 16 to 19

Other bore diameters on request

 

MOUNTING EXAMPLE


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