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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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Telephone:86-519-85858018
Linkman:Ellen Zhang
Mobile phone:86-18068536660
FAX:86-519 85858018
E-mail:ellen@chinasuma.com
address:DONGHUA INDUSTRY PARK, WUJIN DISTRICT, CHANGZHOU, JIANGSU PROVINCE, CHINA PR.
            
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NFR Freewheel Clutch One Way Bearing
  • NFR Freewheel Clutch One Way Bearing

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  • https://www.chinasuma.com/uploadfiles/103.224.250.119/webid106/pc_water/201611/147815102749.jpg
introduction

NFR Freewheel Clutch One Way Bearing

Introduction 

Type NFR is a bearing supported roller type freewheelwithout any sealing. Lubrication and sealing must be

provided by the installation. Standard lubrication is oil.Size 8 to 20 units use steel on steel bearing support

from the inner race. Above size 25, two 160.. series ball bearings are used, giving a higher overrunning speed

capacity. A typical arrangement is shown overleaf.

The inner race is keyed to the shaft. The outer race has a positive n6 tolerance to give a press fit in a housing to H7.Additional side notches provide for positive torque transmission.The housing must be strong enough to not

expand after assembly.


Technical Parameter 


Type

Size


Overrunning speeds


Weight

 

 

 

 

 

 

NFR

(ANR-ANG)

dH7

(mm)

TKN1

(Nm )

Nimax2)

(min-1)

Namax3)

(min-1)

Dn6

(mm)

D2

(mm)

D4

(mm)

L

(mm)

I

(mm)

t

(mm)

bH11

(mm)

r

(mm)

r1

(mm)

 

(kg)

8

20

1000

1000

37

20

30

20


3

6

1

1.5

0.1

12

20

1000

1000

37

20

30

20


3

6

1

1.5

0.1

15

78

850

850

47

26

37

30


3.5

7

1.5

1.5

0.3

20

188

650

650

62

37

52

36


3.5

8

2

2

0.6

25

250

2100

3600

80

40

68

40

0.2

4

9

2.5

2

1.2

30

500

1700

3200

90

45

75

48

0.2

5

12

2..5

2

1.8

35

663

1550

3000

100

50

80

53

1.2

6

13

2.5

2.5

2.4

40

1100

1150

2600

110

55

90

63

2.2

7

15

3

2.5

3.3

45

1500

1000

2400

120

60

95

63

2.2

7

16

3

2.5

4.0

50

2375

800

2150

130

70

110

80

2.7

8.5

17

3.5

3

5.7

55

2550

750

2000

140

75

115

80

4.2

9

18

3.5

3

6.5

60

4250

650

1900

150

80

125

95

3.2

9

18

3.5

3.5

8.9

70

5875

550

1750

170

90

140

110

1.1

9

20

3.5

3.5

13.5

80

10000

500

1600

190

105

160

125

0

9

20

4

3.5

19.0

90

17250

450

1450

215

120

180

140

0.6

11.5

24

4

4

27.2

100

79625

350

1250

260

140

210

150

2.6

14.5

28

4

4

44.5

130

34750

250

1000

300

160

240

180

2

17.5

32

5

5

68.0


Picture 



Mounting Example 

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