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  • SJC50(50KN) Worm Gear Screw Jack
SJC50(50KN) Worm Gear Screw Jack
Use range
1: Brand Name: SIJIE


2: Model: SJC50-Tr40*7


3: Delivery Time: 12-15 working days after received the payment


4: Payment Terms: T/T, Western Union, Paypal, L/C etc


5: Warranty Period: 13 months


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product details


SJC50 Worm Gear Screw Jack Pictures:








SJC50 Worm Gear Screw Jack Quick Information:


1. Jack Model: SJC50
2. Lifting Screw Diam.: 40mm 
3. Lifting Screw Pitch: 7mm 
4. Max load capacity: 50KN
5. Gear Ratio: 1/7, 1/28
6: Travel Stroke: No standard stroke, all stroke is processed according customers requirements.
7. Screw Top End: top plate, clevis end, threaded end, plain end, Spherical hinge, Forked head.
8: Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
9. Power Source: Electric Driven,Manual Operated or Both Are Available
10. Screw Type: trapezoidal screw 
11: Individually or multiple screw jack lift system arrangements are available
12: Precisely positioning, self-locking trapezoidal screw which supports the loads and hold position with no need to employ brake mechanism or other locking systems.


SJC50 Worm Screw Jack Specifications:


Maximum Load ( KN )

50

Starting Efficiency (%)

H

18

Lifting Screw Diam.( mm )

40

L

11

Pitch ( mm )

7

Working Efficiency (%) at 1500rpm

H

32

Gear Ratio

H

1/7

L

25

L

1/28

Torque ( N.m ) without load

H

0.84

Permissible Max. Power (Kw)

H

2.2

L

0.59

L

1.1

Housing Material

Spheroidal graphite iron

Max starting torque full load (N.m)

H

48.5

Weight without stroke (Kg)

21.5

L

20

Weight per 100mm screw and protective tube( Kg )

1.52















SJC50 Screw Jack Lifting Load( KN )



Speed
(rpm)

 

Lifting Speed
(mm/s)

50KN

35KN

H:1/7

L:1/28

H:1/7

L:1/28

H:1/4

L:1/16

N.m

KW

N.m

KW

N.m

KW

N.m

KW

1400

23.3

5.8

24.87

3.65

8.65

1.27

17.41

2.55

6.06

0.89

900

15.0

3.7

27.44

2.59

9.04

0.85

19.21

1.81

6.33

0.60

700

11.7

2.9

28.42

2.08

9.47

0.69

19.90

1.46

6.63

0.49

500

8.3

2.1

29.48

1.54

10.47

0.55

20.63

1.08

7.33

0.38

300

5.0

1.2

31.83

1.00

11.70

0.37

22.82

0.70

8.19

0.26

100

1.7

0.4

34.60

0.36

13.26

0.14

24.22

0.25

9.28

0.10

50

0.8

0.2

36.17

0.19

18.09

0.09

25.32

0.13

12.66

0.07


Speed
(rpm)

 

Lifting Speed
(mm/s)

25KN

10KN

H:1/7

L:1/28

H:1/7

L:1/28

H:1/6

L:1/24

N.m

KW

N.m

KW

N.m

KW

N.m

KW

1400

23.3

5.8

12.43

1.823

4.325

0.634

4.974

0.729

1.730

0.254

900

15.0

3.7

13.72

1.293

4.522

0.426

5.489

0.517

1.809

0.170

700

11.7

2.9

14.21

1.042

4.737

0.347

5.685

0.417

1.895

0.139

500

8.3

2.1

14.74

0.772

5.236

0.274

5.895

0.309

2.094

0.110

300

5.0

1.2

15.92

0.500

5.852

0.184

6.367

0.200

2.341

0.074

100

1.7

0.4

17.30

0.181

6.632

0.069

6.920

0.072

2.653

0.028

50

0.8

0.2

18.09

0.095

9.044

0.047

7.235

0.038

3.617

0.019




























Design, produce and testing:   



SJC50 Worm Gear Screw Jack Dimensions


  



 


SJC50 Worm Gear Screw Jack Ordering information:


SJC - 50  - US  -  T  -  C -  1/7  - 300   -P
 1       2      3       4      5      6         7      8 


1: Jack Brand
SJC: "SIJIE" brand worm gear screw jack


2: Load Capacity
50 :  Max. Load capacity is 50KN
Before selecting 50, please check above SJC50 cubic screw jack specifications.


3: Screw Configuration & Mounting Orientation
US: Upright translating screw     UK: Upright keyed screw    UR: Upright rotating screw
IS: Inverted translating screw     IK: Inverted keyed screw    IR: Inverted rotating screw
Note: US,IS(Screw rotation,do axial motion)   UK,IK(Screw anti-rotation,do axial motion)   UR,IR(Screw fixed rotation,traveling nut do axial motion)



                US                       IS                             UK                        IK                            UR                            IR


4: Screw Top End

   T: Top plate     H: Clevis end    S: Thread end     R: Plain end    SH: Spherical hinge  U: Forked head



5: Worm Shaft Input Types
A: left side worm shaft input.              
B: right side worm shaft input.             
C: double worm shaft input.
M1: right side motor flange direct input, left side worm shaft input.                                    
M2: right side motor flange direct input. 
M3: left side motor flange direct input, right side worm shaft input.                  
M4: left side motor flange direct input

                     A                                                                            B                                                                        C

                 M1                                                  M2                                                     M3                                           M4



6: Gear Ratio:                                       
SJC50 machine screw jack gear ratio includes 1/7, 1/28
1/7: Fast speed,1mm travel length per full turn of worm shaft.                 
1/28: Low speed, 0.25 travel length per full turn of worm shaft. 


7: Travel Stroke


8:  Accessories
N: Standard Jack, No additional accessories
P: Protective Tube
R: Dust Cover
Y: Hand Wheel
Other accessories,please check below picture