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 and rotating (traversing nut) configurations
- Electric Driven and Manual Operated both are available
- Trapezoidal spindle (self-locking) and Ball Screw spindle (high efficiency) version
- Anti-rotation and anti-backlash versions
- 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)
3: Screw 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.
5: Gear Ratio
6: 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
