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BJ920N Standard Mechanical Seals · Pusher...

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Product Description 1. Balanced 2. Encapsulated rotating spring 3. For shafts without a step 4. Independent of direction of rotation 5. Single seal Technical Features 1 . Especially designed for medias with solids and highly viscosity 2. No damage of the shaft by dynamically loaded O-Ring 3. Rugged and reliable design 4. Springs are protected from the product 5. Versatile applications including sterile & vacuum Standard Mechanical Seals · Pusher Seals BJ920N Conveying and bottling of dairy products Dirty, abrasive and solids containing media Pulp and paper industry Sugar industry Water and waste water technology Raw sludge pumps Raw sludge, sewage slurries Thick juice pumps Typical Industrial Applications Item Part no. Description DIN 24250 1.1 1.2 1.3 1.4 1.5 1.6 2 3 472/473 485 412.2 412.1 477 904 475 412.3 Seal face Drive collar O-Ring O-Ring Spring Set screw Seat (G16) O-Ring Sizes: d1 = Upto 1 00 mm (Upto 4.000’’) Pressure: p1*) = 0.8 abs... 25 bar ( 1 2 abs.... 363 PSI) Temperature: t = -50 °C...+220 °C (-58 °F...+430 °F) Speed = 20 m/s (66 ft/s) Permissible axial movement: ±0.5 mm Performance Capabilities Materials Seal face: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B) Seat G16: Silicon carbide (Q1) Standards EN 12756 Notes Variant for sterile applications available. Please enquire. l 3 l 1k l 19 l 7 +O,5 f d 3 d m d 1 h6 d 6 H11 d 7 H8 1.6 1.4 1.5 1.1 2 3 1.2 1.3 l 18 m x l 5 l 6 5 d 8 O 20 37
Transcript
Page 1: BJ920N Standard Mechanical Seals · Pusher Sealssealmaticindia.com/pdf/STD-MECH-SEALS-FOR-PUMPS... · BJ920N Standard Mechanical Seals · Pusher Seals ... Seal face Drive collar O-Ring

Product Description1. Balanced2. Encapsulated rotating spring3. For shafts without a step4. Independent of direction of rotation5. Single seal

Technical Features1. Especially designed for medias with solids and highly viscosity2. No damage of the shaft by dynamically loaded O-Ring3. Rugged and reliable design4. Springs are protected from the product5. Versatile applications including sterile & vacuum

Standard Mechanical Seals · Pusher SealsBJ920N

Conveying and bottling of dairy productsDirty, abrasive and solids containing mediaPulp and paper industrySugar industryWater and waste water technologyRaw sludge pumpsRaw sludge, sewage slurriesThick juice pumps

Typical Industrial Applications

Item Part no. Description

DIN 24250

1.1

1.2

1.3

1.4

1.5

1.6

2

3

472/473

485

412.2

412.1

477

904

475

412.3

Seal face

Drive collar

O-Ring

O-Ring

Spring

Set screw

Seat (G16)

O-Ring

Sizes: d1 = Upto 100 mm (Upto 4.000’’)Pressure: p1*) = 0.8 abs... 25 bar (12 abs.... 363 PSI)Temperature: t = -50 °C...+220 °C (-58 °F...+430 °F)Speed = 20 m/s (66 ft/s)Permissible axial movement: ±0.5 mm

Performance Capabilities

Materials

Seal face: Carbon graphite antimony impregnated (A),Carbon graphite resin impregnated (B)Seat G16: Silicon carbide (Q1)

Standards

EN 12756

Notes

Variant for sterile applications available.Please enquire.

l3

l1k

l19

l7 +O,5

f

d 3 d m

d 1 h6

d 6 H1

1

d 7 H8

1.6 1.4 1.5 1.1 2 3

1.2 1.3l18

mx

l5 l6 5

d8

O20

37

Page 2: BJ920N Standard Mechanical Seals · Pusher Sealssealmaticindia.com/pdf/STD-MECH-SEALS-FOR-PUMPS... · BJ920N Standard Mechanical Seals · Pusher Seals ... Seal face Drive collar O-Ring

Design Variations

l38

l11

l3 l39

l1k

l13 l39

l381.6 1.4 1.1 2 3

1.2 1.3 1.5

BJ927GNItems and description as BJ920N.Seal face: Carbon graphite antimony impregnated (A),Carbon graphite resin impregnated (B)Seat G46: Silicon carbide (Q12)Installations length l (= l + l ) is longer than l .11 3 39 1k

BJ970GN5Items and description as BJ920N.Seal face: Silicon carbide (Q12)Seat G16: Silicon carbide (Q1)

Installations length l (= l + l ) 12 13 19

is shorter than l .1k

BJ977GNItems and description as BJ920N.Seal face: Silicon carbide (Q12)Seat G46: Silicon carbide (Q12)Installation length l1k

Operating range:Temperature: t = –20 °C ... +180 °C (-4 °F ... +356 °F)Sliding velocity: Vg = 10 m/s (33 ft/s)

Dimensional Data

inch size available from size 0.750 to 4.000Note: Additional technical & dimensional information will be provided on request.

d1 d3 d6 d7 d8 dm l1K l3 l5 l6 l7 l18 l19 l 111) l12

2) l13 l38 l39 f mx

18

20

22

24

25

28

30

32

33

35

38

40

43

45

48

50

53

55

58

60

63

65

68

70

75

80

85

90

95

100

32

34

36

38

39

42

44

47

47

49

54

56

59

61

64

66

69

71

78

80

83

85

88

90

99

104

109

114

119

124

27

29

31

33

34

37

39

42

42

44

49

51

54

56

59

62

65

67

70

72

75

77

81

83

88

95

100

105

110

115

33

35

37

39

40

43

45

48

48

50

56

58

61

63

66

70

73

75

78

80

83

85

90

92

97

105

110

115

120

125

3

3

3

3

3

3

3

3

3

3

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

26.0

28.0

30.0

32.5

33.5

36.5

38.5

41.5

41.5

43.5

47.5

49.5

52.5

54.5

57.5

59.5

62.5

64.5

68.5

70.5

73.5

75.5

78.5

80.5

89.0

94.0

99.0

104.0

109.0

114.0

37.5

37.5

37.5

40.0

40.0

42.5

42.5

42.5

42.5

42.5

45.0

45.0

45.0

45.0

45.0

47.5

47.5

47.5

52.5

52.5

52.5

52.5

52.5

60.0

60.0

60.0

60.0

65.0

65.0

65.0

30.5

30.5

30.5

33.0

33.0

35.5

35.5

35.5

35.5

35.5

37.0

37.0

37.0

37.0

37.0

38.0

38.0

38.0

42.0

42.0

42.0

42.0

41.5

48.5

48.5

48.5

48.5

52.0

52.0

52.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

3.0

3.0

3.0

3.0

3.0

5

5

5

5

5

5

5

5

5

5

6

6

6

6

6

6

6

6

6

6

6

6

7

7

7

7

7

7

7

7

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

15.0

15.0

15.0

15.0

15.0

15.0

15.0

15.0

15.0

15.0

16.0

16.0

16.0

16.0

16.0

17.0

17.0

17.0

18.0

18.0

18.0

18.0

18.5

19.0

19.0

19.0

19.0

20.5

20.5

20.5

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

8.0

8.0

8.0

8.0

8.0

9.5

9.5

9.5

10.5

10.5

10.5

10.5

11.0

11.5

11.5

11.5

11.5

13.0

13.0

13.0

39.5

39.5

39.5

42.0

42.0

45.0

45.0

45.0

45.0

45.0

47.5

47.5

47.5

47.5

47.5

50.0

50.0

50.0

55.0

55.0

55.0

55.0

55.0

62.5

62.5

62.5

62.5

67.5

67.5

67.5

35.5

35.5

35.5

38.0

38.0

40.0

40.0

40.0

40.0

40.0

42.5

42.5

42.5

42.5

42.5

45.0

45.0

45.0

50.0

50.0

50.0

50.0

50.0

57.5

57.5

57.5

57.5

62.5

62.5

62.5

28.5

28.5

28.5

31.0

31.0

33.0

33.0

33.0

33.0

33.0

34.5

34.5

34.5

34.5

34.5

35.5

35.5

35.5

39.5

39.5

39.5

39.5

39.0

46.0

46.0

46.0

46.0

49.5

49.5

49.5

17.0

17.0

17.0

17.0

17.0

17.5

17.5

17.5

17.5

17.5

18.5

18.5

18.5

18.5

18.5

19.5

19.5

19.5

20.5

20.5

20.5

20.5

21.0

21.5

21.5

21.5

21.5

23.0

23.0

23.0

9.0

9.0

9.0

9.0

9.0

9.5

9.5

9.5

9.5

9.5

10.5

10.5

10.5

10.5

10.5

12.0

12.0

12.0

13.0

13.0

13.0

13.0

13.5

14.0

14.0

14.0

14.0

15.5

15.5

15.5

3.0

3.0

3.0

3.5

3.5

3.5

3.5

3.5

3.5

3.5

4.0

4.0

4.0

4.0

4.0

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

5.0

5.5

5.5

5.5

5.5

5.5

5.5

M4

M4

M4

M5

M5

M5

M5

M5

M5

M5

M5

M5

M5

M5

M5

M6

M6

M6

M6

M6

M6

M6

M6

M6

M8

M8

M8

M8

M8

M8

38

Dimensions in millimeter

BJ400Mechanical seals with product-protected multiplesprings, for high pressure applications.Pressure: p = max. 50 bar (725 PSI)Shaft diameter: d1 > Upto 100 mm (Upto 4.000’’).Smaller diameters and higher pressures on request.


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