SJA Acme Screw Series Screw Jack

Size

SJA5

SJA10

SJA20

SJA50

SJA80

SJA100

SJA200

SJA300

SJA450

SJA700

SJA1000

Max lifting load [kN]

5

10

20

50

80

100

200

300

450

700

1000

Screw dia x pitch [mm]

Tr18

x

4

Tr20

x

4

Tr30

x

6

Tr40

x

7

Tr50

x

8

Tr60

x

9

Tr80

x

12

Tr100

x

16

Tr120

x

16

Tr140

x

20

Tr160

x

20

Worm ratio

V1

1:4

1:4

1:6

1:7

1:8

1:8

1:8.75

1:10.25

1:10:75

1:13.33

1:13.33

L1

1:16

1:16

1:24

1:28

1:32

1:32

1:35

1:41

1:43

1:40

1:40

Stroke for one input turn [mm]

V1

1

1

1

1

1

1.125

1.371

1.56

1.49

1.5

32333

L1

0.25

0.25

0.25

0.25

0.25

0.281

0.343

0.39

0.37

0.5

0.5

Max input power [kW]

V1

0.30

0.57

0.14

2.2

2.5

3

4

7

11.5

18.5

22

L1

0.15

0.27

0.55

1.1

1.5

2.2

3.5

5.5

5.5

7.5

9.5

Max starting torque at full load [Nm]

V1

4.2

8

18

48.5

75

100

265

460

675

1050

1620

L1

1.5

3.1

6.7

20

30

41

106

180

275

510

820

Starting efficiency

V1

0.24

0.25

0.19

0.18

0.17

0.18

0.17

0.18

0.16

0.16

0.15

L1

0.16

0.16

0.12

0.11

0.10

0.11

0.11

0.12

0.10

0.11

0.10

Running efficiency at 1500rpm

V1

0.34

0.35

0.33

0.32

0.31

0.33

0.33

0.33

0.30

0.31

0.29

L1

0.25

0.25

0.24

0.23

0.22

0.23

0.22

0.23

0.20

0.20

0.19

Torque without load [Nm]

V1

0.11

0.29

0.4

0.84

1.85

2.1

2.8

3.8

5.5

8.5

11

L1

0.09

0.18

0.29

0.59

1.12

1.4

2.1

3.1

4.5

5.5

7.5

Housing material

Spheroidal graphite iron

Cast

Weight [kg]

3.2

5

8.5

21.5

36

58

75

110

200

400

800

Weight per 100mm
screw protective tube [kg]

0.36

0.50

0.75

1.52

2.44

3.02

4.5

6.8

9.0

12.5

16.5