Hydraulic Screw Jack

What is a Hydraulic Screw Jack?

A Hydraulic Screw Jack is a mechanical device used for lifting, lowering, positioning, aligning, and supporting heavy loads with precision. It combines the advantages of hydraulic power with the reliability of a screw mechanism, offering high load capacity, smooth operation, and excellent control. These jacks are widely employed in industries such as construction, manufacturing, aerospace, and automotive for tasks requiring exact vertical movement and stability.

Key Features of Hydraulic Screw Jacks

High Load Capacity: Capable of handling weights from a few tons to over 100 tons.
Precision Control: Allows for fine adjustments in positioning due to the screw mechanism.
Durability: Built with robust materials like hardened steel for long-lasting performance.
Safety: Includes features such as overload protection and self-locking to prevent accidental lowering.
Versatility: Available in various configurations (e.g., machine screw, ball screw) to suit different applications.
Low Maintenance: Hydraulic systems are sealed, reducing the need for frequent upkeep.

Product Parameters

Below is a detailed table of common parameters for our hydraulic screw jack models. These specifications help in selecting the right jack for your needs.

Model	Load Capacity (tons)	Stroke Length (mm)	Lifting Speed (mm/min)	Operating Pressure (bar)	Weight (kg)
HSJ-5T	5	100-300	10-20	150	15
HSJ-10T	10	150-400	8-18	200	25
HSJ-20T	20	200-500	6-15	250	40
HSJ-50T	50	300-600	4-12	300	75
HSJ-100T	100	400-800	3-10	350	120

Note: Custom models are available based on specific requirements. Always refer to the product manual for exact specifications.

Applications of Hydraulic Screw Jacks

Construction: Lifting structural components during building projects.
Manufacturing: Positioning heavy machinery on production lines.
Aerospace: Aligning aircraft parts for maintenance and assembly.
Automotive: Supporting vehicles during repairs and inspections.
Energy Sector: Adjusting equipment in power plants and renewable energy installations.

FAQ: Common Questions About Hydraulic Screw Jacks

What is the maximum load a hydraulic screw jack can handle?
The maximum load varies by model, ranging from 5 tons to over 100 tons. For instance, our HSJ-100T model supports up to 100 tons. It's crucial to choose a jack that exceeds your expected load to ensure safety and longevity.

How does a hydraulic screw jack work?
It operates by using hydraulic pressure to actuate a piston, which turns a screw mechanism. This converts hydraulic energy into linear motion, allowing controlled lifting or lowering. The screw design provides mechanical advantage, enabling precise adjustments without slippage.

What maintenance is required for a hydraulic screw jack?
Regular maintenance includes checking hydraulic fluid levels, inspecting for leaks, and lubricating the screw mechanism. Sealed units typically require less frequent maintenance, but it's advised to follow the manufacturer's guidelines, such as annual inspections for heavy-use applications.

Can hydraulic screw jacks be used in hazardous environments?
Yes, certain models are designed with explosion-proof or corrosion-resistant materials for use in hazardous conditions like chemical plants or outdoor settings. Always verify the jack's specifications and certifications (e.g., ATEX for explosive atmospheres) before deployment.

What safety features are included?
Common safety features include overload valves to prevent exceeding capacity, self-locking screws to hold loads in place without continuous hydraulic pressure, and built-in bypass systems for emergency lowering. Always use jacks on stable surfaces and with proper training.

How do I choose the right hydraulic screw jack for my application?
Consider factors like load capacity, stroke length, lifting speed, and environmental conditions. Refer to the parameter table above and consult with our technical team for personalized recommendations based on your specific needs, such as frequency of use and precision requirements.

Are hydraulic screw jacks customizable?
Absolutely. We offer customization options for stroke length, mounting configurations, materials, and control systems. Provide your application details, and we can engineer a jack tailored to your project, ensuring optimal performance and safety.