Manual Worm Gear Screw Jack – SWL Series
Our Manual Worm Gear Screw Jack (SWL Series) is designed for stable lifting, lowering, turning, and fine adjustment of industrial equipment. Featuring a self-locking trapezoidal screw, it ensures safe positioning even under load. Suitable for light to medium loads with intermittent operation, it is widely used in metallurgy, machinery, lifting platforms, stage equipment, and more.
Key Selling Points
- Self-locking trapezoidal screw – eliminates the need for additional braking, ensuring stable positioning for safety-critical applications.
- Lifting capacity up to 120 tons – covers a wide range of heavy-duty industrial lifting needs (based on model selection).
- Stroke range 100–2000 mm – flexible adjustment to meet diverse application requirements.
- Manual operation – provides simple, reliable control without dependency on power supply, ideal for maintenance and manual adjustment tasks.
- Certified quality – ISO 9001, ISO 14001, ISO 45001, and CE certified (CE for ball screw actuators), ensuring compliance with international standards.
Technical Specifications
| Model Series | SWL Series |
| Lifting Capacity | 2.5 – 120 t |
| Lifting Speed | 0.1 – 0.6 m/min |
| Stroke Range | 100 – 2000 mm |
| Gear Ratios | 6:1, 8:1, 10:1, 24:1, 32:1 |
| Operating Temperature | -20°C to 80°C |
| Protection Grade | IP54 – IP55 |
| Operation Mode | Manual |
| Self-locking | Yes (trapezoidal screw) |
| Screw Material | 40Cr / 45# steel |
| Housing Material | HT200 cast iron |
| Nut Material | Bronze (CuSn6Zn6Pb3) |
| Gear Material | 40Cr / 42CrMo |
| Shaft Material | 45# carbon steel |
Models and Options
The SWL series includes various gear ratios and stroke lengths. Our manual version is available with lifting capacities from 2.5 to 120 tons. Optional accessories: motor (for upgrade to electric), coupling, protective cover, control system.
Materials and Structure
Built from high-strength materials: trapezoidal screw made of 40Cr or 45# steel, cast iron housing (HT200), bronze nut, 40Cr/42CrMo gears, and 45# steel shaft. The robust structure ensures long service life and low noise.
Applications
Ideal for general industrial equipment supporting: metallurgy, machinery, lifting platforms, water conservancy, construction, stage equipment, grain and oil processing. Used for jacking, turning, and fine-tuning mechanisms with light load and intermittent operation.
Customization
We offer customization services based on supplied drawings or samples. Options include special strokes, gear ratios, and protective coatings. Contact our sales team for tailored solutions.
Case Study
No specific case study provided. Contact us for application references.
FAQ
What is the maximum load capacity for the manual SWL screw jack?
The SWL series can handle up to 120 tons. Please refer to the technical specifications for details.
Does the manual screw jack require external power?
No, it is manually operated, making it suitable for locations without electricity or for backup applications.
Is the screw jack self-locking?
Yes, the trapezoidal screw design provides self-locking capability, ensuring the load stays in position without additional brake.
What certifications do you have?
We are ISO 9001, ISO 14001, ISO 45001 certified. Our ball screw actuators also have CE certification.
What is the typical lead time?
Lead time depends on quantity and customization. Generally, standard models are available within 30 days. Contact us for details.
Can I get a sample before ordering?
Yes, we can provide samples for evaluation. MOQ is 1 unit.
What payment terms do you accept?
We accept 30% advance payment, 70% before shipment (T/T). L/C at sight is also negotiable.
Do you offer after-sales service?
Yes, we provide technical support and warranty. Contact us for specific terms.
Inquiry Information
For pricing, availability, or customization, please contact:
Josie
Email: Josie@sdjymachinery.com
Tel: +8618963003132
WhatsApp: +8618963003132
Image Filename and Alt Suggestions
- Filename: manual-worm-gear-screw-jack-swl.jpg (main image)
- Alt: Manual worm gear screw jack SWL series – side view
Request a Quote for Manual SWL Screw Jack
