The JWM Series worm gear screw jack is a low-speed, trapezoidal screw jack engineered for precise lifting and positioning in demanding industrial environments. With a lifting capacity range from 1 to 1000 kN and a stroke up to 1500 mm, it provides reliable self-locking to maintain position even under heavy loads. Constructed with high-grade 40Cr screw, bronze nut, and cast iron housing, it ensures long-lasting performance in continuous operation.
Key Selling Points
- Self-locking trapezoidal thread ensures safety and stability during lifting, beneficial for applications requiring position holding.
- Broad lifting capacity 1–1000 kN meets diverse load requirements from light jigs to heavy industrial equipment.
- Stroke range 100–1500 mm offers flexibility in travel distance to accommodate various installation spaces.
- IP55–IP65 protection guards against dust and water, suitable for harsh environments.
- High-strength materials: 40Cr screw, bronze nut, HT200 cast iron housing ensure durability and low maintenance.
- Multiple gear ratios (5:1 to 32:1) allow flexibility in speed and torque adjustment.
| Technical Specifications |
|---|
| Model Series | JWM |
| Lifting Capacity | 1–1000 kN |
| Lifting Speed | 0.2–1.8 m/min |
| Stroke Range | 100–1500 mm |
| Gear Ratios | 5:1, 6:1, 8:1, 10:1, 20:1, 24:1, 32:1 |
| Temperature Range | -20°C to 100°C |
| Protection Grade | IP55–IP65 |
Materials and Structure
- Screw: 40Cr / 45# steel
- Housing: HT200 cast iron
- Nut: Bronze (CuSn6Zn6Pb3)
- Gear: 40Cr / 42CrMo
- Shaft: 45# carbon steel
Models and Options
Available with various gear ratios (5:1 to 32:1) and stroke lengths (100–1500 mm). Different protection grades (IP55 or IP65) can be specified. Manual or motor driven operation options.
Applications
Precision machinery, automation lines, medical equipment, packaging machinery, tooling fixtures, plastic machinery, printing machinery. Particularly suited for heavy-load, low-speed vertical jacking with self-locking requirements.
Customization
Customized processing services based on customer-supplied materials or drawings are available. Please contact our engineering team for specific requirements.
Case Study
An Italian industrial automation OEM and metallurgical equipment manufacturer used 80 units of our JWM screw jacks in a synchronous lifting system for a Danieli strip finishing line. Over 8 years of operation, the jacks delivered stable multi-point synchronized lifting with high positioning accuracy and reliable self-locking, even in harsh metallurgical environments. Key outcomes include low maintenance, energy savings, and compact structure.
FAQ
1. What is the maximum load capacity?
The JWM series can handle up to 1000 kN, depending on model selection.
2. Can the screw jack operate in high temperature environments?
Yes, it is designed to operate in temperatures from -20°C to 100°C.
3. What protection levels are available?
IP55 and IP65 options are available for water and dust resistance.
4. Is the screw jack self-locking?
Yes, the trapezoidal thread design provides reliable self-locking to hold the load in position.
5. Can I order a custom stroke length?
Yes, with MOQ of 1 unit, we can customize stroke and other parameters.
6. What is the typical lead time?
Please contact us for delivery time as it depends on configuration and quantity.
7. Do you provide pre-shipment testing?
Yes, pre-shipment testing is available and can be arranged.
8. What payment terms do you accept?
Our payment terms are 30% deposit, 70% balance before shipment (30/70).
Image Filename and Alt Suggestions
Main image: jwm-screw-jack-s45-heavy-load.png Alt: JWM screw jack in heavy load lifting application
Secondary image: jwm-screw-jack-s45-closeup.png Alt: Close-up of JWM screw jack construction
