SJB Screw Jack

Size

SJB10

SJB20

SJB21

SJB22

SJB50

SJB51

SJB80

SJB81

SJB100

SJB101

SJB200

SJB201

SJB300

Max lifting

load [kN]

10

20

20

20

50

35

60

60

80

70

90

100

150

Dynamic

load

11

17

25

25

46

30

53

56

71

62

78

97

111

Screw dia x pitch [mm]

20×5

32×5

32×10

32×20

40×10

40×20

50×10

50×20

63×10

63×20

80×10

80×20

100×20

Worm

ratio

V1

1.4

1.6

1.6

1.6

1.7

1.7

1:8

1:8

1:8

1:8

1:8.75

1:8.75

1:10.25

L1

1:16

1:24

1:24

1:24

1:28

1:28

1:32

1:32

1:32

1:32

1:35

1:35

1:41

Stroke for one input turn [mm]

V1

1.25

0.83

1.67

3.34

1.43

2.86

1.25

2.5

1.25

2.5

2.28

2.28

1.95

L1

0.31

0.21

0.42

0.84

0.36

0.72

0.31

0.62

0.31

0.62

0.58

0.58

0.488

Max input power [kW]

V1

0.57

1.14

1.14

1.14

2.2

2.2

2.5

2.5

3

3

4

4

7

L1

0.27

0.55

0.55

0.55

1.1

1.1

1.5

1.5

2.2

2.2

3.5

3.5

5.5

Max starting torque at full load [Nm]

V1

4.8

8.2

15.3

29.2

34.4

47.4

36.8

72.3

49.0

82.9

53.2

118

157

L1

1.8

3.4

6.3

12.1

14.6

19.4

15.3

29.9

20.4

34

23.4

52

66.7

Starting efficiency

V1

41

32

35

36

33

34

32

33

32

34

31

31

30

L1

27

20

21

22

20

21

20

20

20

21

18

18

18

Torque withoutload [Nm]

V1

59

58

62

65

59

60

58

59

58

60

55

55

53

L1

42

39

42

44

39

41

39

40

39

41

35

35

35

Housing material

Spheroidal graphite iron

Weight [kg]

6

9.5

9.5

10

23

24

38

40

62

64

78

78

125

tube [kg]

0.5

0.8

0.8

0.8

1.6

1.6

2.5

2.5

3.2

3.2

4.6

4.6

7.3