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Safety & Stability: The inherent self-locking feature prevents back-driving, ensuring loads stay in place without external brakes.
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Precision: Allows for fine, proportional control, making it ideal for tasks requiring exact positioning.
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High Capacity: Compact design that can handle loads from a few kilograms to hundreds of tons.
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Mechanical Advantage: Lifts heavy loads with minimal input force (torque).
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Durability: Made of sturdy materials (e.g., high-quality steel) for reliable performance in harsh environments.
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Versatility: Can be operated manually, electrically, or pneumatically; functions in various orientations (upright, inverted, horizontal).
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Clean Operation: No hydraulic fluid, eliminating leak risks and making them suitable for sensitive environments (e.g., food, medical).
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Synchronization: Multiple units can be easily linked for smooth, even lifting of large or uneven loads.
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Cost-Effective: Lower initial purchase and long-term maintenance costs compared to hydraulic/pneumatic systems.

Screw Lift Applications by Industry
| Industry | Common Applications |
|---|---|
| Industrial & Manufacturing | Machine tool adjustment (CNC, milling), assembly line positioning, conveyor systems, mechanical presses, welding positioners, and furnace door controls. |
| Automotive & Transportation | Vehicle lifts for garages, railway car maintenance, aircraft assembly platforms, and adjustable loading ramps. |
| Construction & Civil Engineering | Leveling scaffolding, supporting heavy structural members (beams, columns), house lifting for foundation repairs, and bridge maintenance. |
| Specialized High Precision | Solar trackers, satellite antenna positioning, theater stage platforms, adjustable medical beds, and guardrail/bollard systems. |
Specification Table – SWL Series Screw Jacks
| Type | SWL2.5 | SWL5 | SWL10 | SWL15 | SWL20 | SWL25 | SWL35 | SWL50 | SWL100 | SWL120 |
|---|---|---|---|---|---|---|---|---|---|---|
| Max hoisting force (kN) | 25 | 50 | 100/150 | 200 | 250 | 350 | 500 | 1000 | 1200 | 1200 |
| Max tensile force (kN) | 25 | 50 | 99 | 166 | 250 | 350 | 500 | 1000 | 1200 | 1200 |
| Worm gear ratio (P) | 6:1 | 6:1 | 8:1 | 8:1 | 10:1 | 10:1 | 10:1 | 12.5:1 | 12.5:1 | 12:1 |
| Travel per turn (P) mm | 1.0 | 1.167 | 1.565 | 1.5 | 1.5 | 1.5 | 1.875 | 1.76 | 2.0 | – |
| Worm gear ratio (M) | 24:1 | 24:1 | 24:1 | 24:1 | 32:1 | 32:1 | 32:1 | 36:1 | 36:1 | – |
| Travel per turn (M) mm | 0.250 | 0.292 | 0.5 | 0.5 | 0.5 | 0.562 | 0.652 | 0.611 | 0.677 | – |
| Worm screw torque (N·m) | 18 | 44.2 | 10.8 | 182 | 314 | 398 | 848 | 1938 | 3315 | – |
| Max allowable power (kW) | 1.45 | 2.59 | 3.47 | 4.02 | 5.38 | 13.06 | 13.9 | 28.5 | 62 | – |
| Total efficiency (P) % | 223 | 21 | 23 | 21 | 19 | 18 | 15 | 13 | 12.00 | – |
| Total efficiency (M) % | 14 | 12 | 15 | 13 | 11 | 11 | 11 | 10 | 8 | – |
| Lubricant quantity (L) | 0.1 | 0.25 | 0.5 | 0.75 | 1.1 | 1.9 | 2.2 | 2.5 | 2.5 | – |
| Weight w/o travel (kg) | 7.3 | 16.2 | 25 | 36 | 70.5 | 87 | 420 | 1010 | 1350 | – |
| Screw weight per 100mm (kg) | 0.45 | 0.82 | 1.67 | 2.15 | 4.15 | 5.2 | 7.45 | 13.6 | 17.3 | – |
Notes:
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Max allowable power is rated at 20°C ambient temperature and 20%/h duty cycle.
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Total efficiency values are based on grease lubrication.
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Operating temperature range: –20°C to +80°C.
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Self-locking typically applies under static conditions.
