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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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Linkman:Ellen Zhang
Mobile phone:86-18068536660
FAX:86-519 85858018
E-mail:ellen@chinasuma.com
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DC Sprag Freewheel Cage Assemblies
  • https://www.chinasuma.com/uploadfiles/103.224.250.119/webid106/pc_water/201803/15209087899.jpg
introduction

DC Sprag Freewheel Cage Assemblies


Data Sheet

Item

DC

MaterialGCr15
Bore size22.225-123.881 mm
Outer dia.38.885-142.880 mm
Nominal torque63-4785 Nm
Weight0.03-0.4 kg
Sprags quantity12-44
Overrunning speed (outer race)750-4300 min-1
Overrunning speed (inner race)1500-8600 min-1
Packagecarton box


Feature

1.Type DC is a one way sprag clutch bearing  without inner or outer races. It must be installed in a design providing races, bearing support for axial and radial loads, lubrication and sealing.

2.The DC type version-N accepts all types of lubricants currently used in the power transmission equipement.
3.The sprag space tolerance must not be exceeded. Inner and outer races must both have a minimum plain width "e", without any recess, to ensure the freewheel functions correctly .

4.Alternatively, races can be made in case hardened steel shafts, or housings, 
Surface hardness of the finished part should be HRC 60 to 62, for a depth of 0,6 mm minimum.
5.Core hardness to be HRC35 to 45. Surface roughness not to exceed 22CLA. Maximum taper between races:0,007 mm for 25 mm width.


QQ20150209084510.jpg

Size

Overrunning speeds


Sprag space


No.

of clips 

 

Number

of sprags 

Weight


nimax2)

namax3)

Øa+0.008
    -0.005

Øc± 0.013


emin

Ødmin

Øbmax

[min -1]

[min -1]

[mm]

[mm]

[mm]

[mm]

[mm]

[mm]



[kg]

DC2222G-N

8600 

4300 

22.225

38.885

8.33±0.075

10

50 

15 

12 

0.03

DC2776-N

6900 

3400 

27.762

44.422

8.33±0.075

13.5

58 

18 

14 

0.055

DC3034-N

6300 

3100 

30.34

47

8.33±0.075

13.5

62 

20 

14 

0.06

DC3175(3C)-N

6000 

3000 

31.75

48.41

8.33±0.075

13.5

63 

21 

16 

0.06

DC3809A-N

5000 

2500 

38.092

54.752

8.33±0.075

16

71 

25 

18 

0.085

DC4127(3C)-N

4600 

2300 

41.275

57.935

8.33±0.075

13.5

75 

27 

18 

0.09

DC4445A-N

4300 

2100 

44.45

61.11

8.33±0.1

16

79 

29 

20 

0.095

DC4972(4C)-N

3800 

1900 

49.721

66.381

8.33±0.1

13.5

86 

33 

22 

0.1

DC5476A-N

3500 

1700 

54.765

71.425

8.33±0.1

16

92 

36 

24 

0.11

DC5476A(4C)-N

3500 

1700 

54.765

71.425

8.33±0.1

16

92 

36 

24 

0.13

DC5476B(4C)-N

3500 

1700 

54.765

71.425

8.33±0.1

21

92 

36 

24 

0.18

DC5476C(4C)-N

3500 

1700 

54.765

71.425

8.33±0.1

25.4

92 

36 

24 

0.2

DC5776A-N

3300 

1600 

57.76

74.42

8.33±0.1

16

98 

38 

26 

0.11

DC6334B-N

3000 

1500 

63.34

80

8.33±0.1

21

104 

42 

26 

0.175

DC7221(5C)-N

2600 

1300 

72.217

88.877

8.33±0.1

13.5

115 

48 

30 

0.14

DC7221B-N

2600 

1300 

72.217

88.877

8.33±0.1

21

115 

48 

30 

0.185

DC7221B(5C)-N

2600 

1300 

72.217

88.877

8.33±0.1

21

115 

48 

30 

0.21

DC7969C(5C)-N

2400 

1200 

79.698

96.358

8.33±0.1

25.4

124 

53 

34 

0.28

DC8334C-N

2300 

1100 

83.34

100.000 

8.33±0.1

25.4

132 

55 

34 

0.27

DC8729A-N

2200 

1100 

87.29

103.96

8.33±0.1

16

134 

58 

34 

0.165

DC10323A(5C)*-N

1800 

900 

103.231**

119.891

8.33±0.1

16

155 

68 

40 

0.205

DC12334C*-N

1500 

750 

123.340**

140.000 

8.33±0.1

25.4

184 

80 

50 

0.4

DC12388C(11C)

1500 

750 

123.881

142.88

9.50±0.1

25.4

186 

80 

11 

44 

0.4


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Tag:sprag,sprag freewheel,sprag cage,cage assembly,sprag clutch,one way bearing
Telephone: 86-519-85858018    Mobile phone: 86-18068536660    Fax: 86-519 85858018
E-mail: ellen@chinasuma.com
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