SJC cubic screw jack

/SJC cubic screw jack
SJC cubic screw jack

Project Description

Cubic Machine Screw Jacks

All housings of this compact machine screw jack have a cubic form and are machined on all faces. Motor and jack actuator assemblies can be installed in any position.  The payloads from 1 kN to 1000 kN. A total of 12 sizes are available.

  • Metric screw jacks type: fully metric mounting hole locations, diameters, and fasteners.
  • Load capacities from 1KNs~1000KN
  • Translating(traveling screw) and rotating (traveling nut) configurations
  • Electric Driven and Manual Operated both are available
  • Trapezoidal spindle (self-locking) and Ball Screw spindle (high efficiency) version
  • Design option: Standard, Anti-rotation, Anti-backlash or Safety nut
  • Standard and custom end fittings, mounting options, and drive shaft
  • Sijie can customize to your specifications

2.5KN~80KN Acme Screw Jacks Spec

Model SJC2.5 SJC5 SJC10 SJC20 SJC50 SJC80
Maximum Load (KN) 2.5 5 10 20 50 80
Screw Diameter and Screw Pitch (mm) Tr14×4 Tr18×4 Tr20×4 Tr30×6 Tr40×7 Tr50×8
Gear Ratio H 4 4 4 6 7 8
L 16 16 16 24 28 32
Starting Efficiency % H 0.24 0.24 0.25 0.19 0.18 0.17
L 0.16 0.16 0.16 0.12 0.11 0.1
Working Efficiency % at 1500 rpm H 0.34 0.34 0.35 0.33 0.32 0.31
L 0.16 0.25 0.25 0.24 0.23 0.22
Permissible max. Power ( KW ) H 0.25 0.3 0.57 1.14 2.2 2.5
L 0.18 0.15 0.27 0.55 1.1 1.5
Full load starting torque ( N.m) H 3.2 4.2 8 18 48.5 75
L 1.5 1.5 3.1 6.7 20 30
Torque ( N.m ) without load H 0.068 0.11 0.29 0.4 0.84 1.85
L 0.05 0.09 0.18 0.29 0.59 1.12
Housing Material Aluminum Spheroidal graphite iron Spheroidal graphite iron
Weight without stroke (Kg) 1.2 3.2 5 8.5 21.5 36
Weight per 100mm screw 0.2 0.36 0.5 0.75 1.52 2.44
and protective tube(Kg)

100KN~1000KN Acme Screw Jacks Spec

Model SJC100   SJC200  SJC300 SJC450  SJC700 SJC1000  
Maximum Load (KN) 100 200 300 450 700 1000
Screw Diameter and Screw Pitch (mm) Tr60×9 Tr80×12 Tr100×16 Tr120×16 Tr140×20 Tr160×20
Gear Ratio H 8 8.75 10.25 10.75 13.33 13.33
L 32 35 41 43 40 40
Starting Efficiency % H 0.18 0.17 0.18 0.16 0.16 0.15
L 0.11 0.11 0.12 0.1 0.11 0.1
Working Efficiency % at 1500 rpm H 0  0.33 0.33 0.33 0.3 0.31 0.29
L 0.23 0.22 0.23 0.2 0.21 0.19
Permissible max. Power ( KW ) H 3 4 7 11.5 18.5 22
L 2.2 3.5 5.5 5.5 7.5 9.5
Full load starting torque ( N.m) H 100 265 460 675 1050 1620
L 41 106 180 275 510 820
Torque ( N.m ) without load H 2.1 2.8 3.8 5.5 8.5 11
L 1.4 2.1 3.1 4.5 5.5 7.5
Housing Material Spheroidal graphite iron
Weight without stroke (Kg) 58 75 110 200 400 800
Weight per 100mm screw 3.02 4.5 6.8 9 12.5 16.5
and protective tube(Kg)

10KN~50KN Ball Screw Jacks Spec

Model SJD10 SJD11 SJD12 SJD20 SJD21 SJD22 SJD50 SJD51
Maximum Load (KN) 10 12 7 18 24 19 50 39
Outer Diameter of screw (mm) 20 20 20 32 32 32 40 40
Screw Lead (mm) 5 10 20 5 10 20 10 20
Gear Ratio H 1/4 1/4 1/4 1/6 1/6 1/6 1/7 1/7
L 1/16 1/16 1/16 1/24 1/24 1/24 1/28 1/28
Starting Efficiency H 0.35 0.35 0.35 0.32 0.32 0.32 0.33 0.33
L 0.22 0.22 0.22 0.20 0.20 0.20 0.20 0.20
Efficiency % at 1500rpm H 0.59 0.59 0.59 0.58 0.58 0.58 0.59 0.59
L 0.42 0.42 0.42 0.39 0.39 0.39 0.39 0.39
Permissible max. Power ( KW ) H 0.57 0.57 0.57 1.14 1.14 1.14 2.2 2.2
L 0.27 0.27 0.27 0.55 0.55 0.55 1.1 1.1
Full load Torque ( N.m ) H 5.6 13.4 15.6 7.4 18.9 31.5 35.5 51.4
L 2.2 5.3 6.2 2.9 7.9 12.6 14.2 22.2
No-load Torque ( N.m ) H 0.29 0.29 0.29 0.4 0.40 0.40 0.84 0.84
L 0.18 0.18 0.18 0.29 0.29 0.29 0.59 0.59
Screw travel length (mm) per turn of worm shaft H 1.25 2.5 5.0 0.83 1.67 3.34 1.43 2.86
L 0.31 0.62 1.24 0.21 0.42 0.84 0.36 0.72
Housing Material Ductile iron Ductile iron Ductile iron Ductile iron Ductile iron Ductile iron Ductile iron Ductile iron
Weight without stroke (Kg) 6 6 6 9.5 9.5 10 24 24
Weight per 100mm screw and protective tube(Kg) 0.5 0.5 0.5 0.8 0.8 0.8 0.5 0.5

80KN~300KN Ball Screw Jacks Spec

Model SJD80 SJD81 SJD100 SJD101 SJD200 SJD201 SJD300
Maximum Load (KN) 60 57 67 110 73 130 150
Outer Diameter of screw (mm) 50 50 63 63 80 80 100
Screw Lead (mm) 10 20 10 20 10 20 20
Gear Ratio H 1/8 1/8 1/8 1/8 1/8.75 1/8.75 1/1025
L 1/32 1/32 1/32 1/32 1/35 1/35 1/41
Starting Efficiency H 0.32 0.33 0.32 0.34 0.31 0.31 0.30
L 0.20 0.20 0.24 0.21 0.18 0.18 0.18
Efficiency % at 1500rpm H 0.58 0.58 0.58 0.58 0.55 0.55 0.53
L 0.39 0.39 0.39 0.39 0.35 0.35 0.35
Permissible max. Power ( KW ) H 2.5 2.5 3 3 4 4 7
L 1.5 1.5 2.2 2.2 3.5 3.5 5.5
Full load Torque ( N.m ) H 37.3 70.9 41.7 136.8 41.5 113.7 155.4
L 14.9 28.4 16.7 54.7 16.6 22.7 58.3
No-load Torque ( N.m ) H 1.52 1.52 2.1 54.7 2.8 2.8 3.8
L 1.12 1.12 1.4 2.1 2.1 2.1 3.1
Screw travel length (mm) per turn of worm shaft H 1.25 2.5 1.25 2.5 1.14 2.28 1.95
L 0.31 0.62 0.31 0.62 0.29 0.58 0.488
Housing Material Ductile iron Ductile iron Ductile iron Ductile iron Ductile iron Ductile iron Ductile iron
Weight without stroke (Kg) 38 40 62 64 78 80 125
Weight per 100mm screw and protective tube(Kg) 2.5 2.5 3.2 3.2 4.6 4.6 7.3

SJC Series  Cubic Machine Screw Jack Ordering Information 

SJC300  – US  –  T  –   C –   1/41  –  300   – P
           1       2        3       4        5          6        7      

 

1: Jack Model

2: 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)

Screw Configuration & Mounting Orientation

3: Screw Top End

Screw jack Top End

4: Worm Shaft Input Types

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

Worm Shaft Input Types

5: Gear Ratio

6: Travel Stroke

Travel Stroke

 

7:  Accessories

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

screw jack accessories one screw jack accessories two screw jack accessories three screw jack accessories four
screw jack common layout multiple screw jack configurations