SWL20T Self-Locking Screw Jack – Assembly Type, Structure Type & Shaft Orientation Diagram
SWL20T Self-Locking Screw Jack – Assembly Type, Structure Type & Shaft Orientation
The SWL20T screw jack is a self-locking worm gear screw lift with 20 ton (200 kN) load capacity. It is available in multiple structure types, assembly types, and shaft orientation configurations to match your specific application requirements
Screw lift screw jack structure type
| Structure Type | Description | Best For |
| Type 1 | Worm gear threadedly connected to screw; screw moves axially (rotates + translates) | Vertical lifting, precise positioning |
| Type 2 | Worm gear keyed to screw; screw rotates, nut moves axially | Compact installations, high-speed operation |
Available Assembly Types
| Assembly Type | Movement Direction | Application |
| Type A | Screw (or nut) moves upward | Lifting loads from below |
| Type B | Screw (or nut) moves downward | Pushing down or suspended loads |
Shaft Orientation Diagram
The SWL-20T features dual-side input shafts supporting IEC, NEMA, and servo motor adapter flanges
Input shaft options:
Left-side input
Right-side input
Dual-side input (motor on either side)
Output configurations:
Type A: Screw work end at top – upward pushing
Type B: Screw work end at lower side – downward pulling
Example: SWL20T-1A-II-500FZ = SWL20T, Type 1 structure, Type A assembly (upward), Type II screw head (flanged), 500mm stroke, with anti-rotation and protective boot.
Key specifications of SWL10t turbine screw reducer
| Parameter | Value |
| Max Lifting Force | 200 kN (20 tons) |
| Max Pulling Force | 166 kN |
| Screw Thread | Tr65×12 |
| Reduction Ratios | 8:1 / 24:1 |
| Max Input Speed | 1,500 r/min |
| Self-locking | Yes (static condition) |
Selection Guide
Choose Structure Type: Type 1 for vertical lifting with screw movement; Type 2 for compact designs with nut movement
Choose Assembly Type: Type A for upward lifting; Type B for downward pushing
Choose Shaft Orientation: Left, right, or dual-side input based on motor position
Specify Stroke: Custom stroke available per your requirements
Need help with selection? Send us your load, stroke, speed, and mounting preference – our engineering team responds within 24 hours.