SIJIE provides high-performance screw jack actuators designed for heavy-duty lifting, pushing, pulling and precise positioning applications.
Our electric screw jack actuators combine a precision screw mechanism with a robust gearbox structure to deliver reliable linear motion solutions for industrial machinery, automation equipment and customized systems.
Available with trapezoidal screw or ball screw designs, the actuators can be configured according to load capacity, speed, stroke length, positioning accuracy and operating frequency requirements.
With flexible motor options and OEM customization capabilities, SIJIE screw jack actuators provide an efficient alternative to hydraulic systems, offering lower maintenance, accurate control and long service life.
Designed for industrial lifting and positioning applications, the screw jack actuator provides reliable pushing and pulling performance with load capacities from 2.5 tons to 20 tons. Customized solutions are available for special load requirements.
Precision screw mechanisms ensure smooth movement and accurate positioning.
The system can achieve positioning accuracy up to 0.1 mm, making it suitable for automation equipment and precision machinery.
The high-strength housing and precision guide structure improve rigidity, stability and resistance against side loads during operation.
This ensures reliable performance under heavy-duty working conditions.
Different screw configurations are available according to application requirements:
· Trapezoidal screw for high load capacity and self-locking performance
· Ball screw for higher speed and efficiency
The double sealing structure helps prevent dust, moisture and contaminants from entering the actuator.
Protection grades up to IP55/IP56 are available for harsh industrial environments.
The actuator can be integrated with: AC motors, Gear motors, Servo motors, Encoders,Limit switches,Manual hand wheels to meet different control and automation requirements.
| Model | SJWG025 | SJWG050 | SJWG100 | SJWG200 | SJWG300 | |
| Maximum lifting force(KN) | 24.5 | 49.0 | 98.0 | 196 | 294 | |
| Outer Diameter Of Screw ( mm ) | 26 | 40 | 50 | 65 | 85 | |
| Root Diameter Of Screw ( mm ) | 19.7 | 30.5 | 38.4 | 51.3 | 67 | |
| Screw lead (mm) | 5 | 8 | 10 | 12 | 16 | |
| Gear Ratio | P | 6:1 | 6:1 | 8:1 | 8:1 | 10.67:1 |
| M | 24:1 | 24:1 | 24:1 | 24:1 | 32:1 | |
| Screw (Nut) travel per turn of worm shaft(mm) | P | 0.83 | 1.33 | 1.25 | 1.50 | 1.50 |
| M | 0.21 | 0.33 | 0.42 | 0.50 | 0.50 | |
| Efficiency ( % ) | P | 22 | 22 | 22 | 21 | 20 |
| M | 13 | 14 | 15 | 14 | 12 | |
| Maximum input power(KW) | P | 1.0 | 2.0 | 2.8 | 5.0 | 8.4 |
| M | 0.46 | 0.63 | 1.4 | 3.2 | 4.6 | |
| Max. Load, Required Input Torque ( N.m ) | P | 16.1 | 48.7 | 90.7 | 238.1 | 400.1 |
| M | 7.4 | 20.0 | 45.3 | 124.0 | 244.0 | |
| Max. Load, Permissible Input Speed( rpm) | P | 600 | 400 | 300 | 200 | 200 |
| M | 600 | 300 | 300 | 250 | 180 | |
| No-Load Torque ( N.m ) | 0.62 | 1.4 | 2.0 | 3.9 | 9.8 | |
| Permissible Input Torque ( N.m ) | 49.0 | 153.9 | 292.0 | 292.0 | 735.0 | |
| Max. Load, Lifting Screw Output Torque( N.m ) | 65.1 | 201.5 | 503.6 | 1287.7 | 2531.9 | |
