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ISO9001 + CE Certified
Explore our full range of worm gear, bevel gear, electric and manual screw jacks – engineered for precision lifting and positioning across industrial applications.
Direct drop-in replacement for global brands. Same mounting dimensions, reliable performance, cost-effective solution, and shortened lead times.
Send us your model number or photo — we’ll match it precisely and ship within days.
Trusted in 30+ industries worldwide. High-quality alternatives that reduce your costs and lead times without compromising on precision.
01 Custom Load & Speed
From 0.5 kN to 4,000 kN, adjustable speeds to fit your project needs.
02 Tailored Dimensions
Stroke lengths, mounting types, and flanges built to your exact specs.
03 Material Options
G-AL, GGG, cast steel, stainless steel, or special coatings for any environment.
04 Quick Prototyping
Free CAD & 3D drawings, fast production from approved designs.
ISO9001 certified — ensuring every screw jack meets strict safety, environmental, and quality requirements for worldwide markets.
We are a dedicated manufacturer of high-precision screw jacks, serving industrial clients with nearly 40 years of manufacturing expertise. Our factory is equipped with CNC machining centers, load testing rigs, and ISO certified production lines, ensuring every unit meets ±0.01 mm tolerance and offers 1:1 compatibility with major OEM brands.
From custom gear ratios to special load capacities up to 400 tons, we design, manufacture, and test each product to match your exact application. Our full in-house SOP and real-time quality inspection guarantee stable performance, long service life, and compliance with global safety standards.
Our standard screw jack models are ready for shipment in as little as 3 working days. For customized specifications, production time is only slightly longer, ensuring you still get rapid delivery without compromising precision and quality.
Our screw jacks deliver OEM-level precision, multiple customization options, and 100,000+ cycle durability—with standard models shipping in just 3 days to keep your operations running without delay.
Precisely matches original dimensions, mounting patterns, and performance. Ensuring seamless replacement without costly modifications.
Tailored load capacity, stroke length, lead, materials, and protection levels to suit diverse industrial environments, from food-grade to marine use.
Manufactured to international precision standards, with proven durability exceeding 100,000 cycles; optimized for long-term reliable performance.
Standard screw jacks ship within 3 days; custom solutions with short lead times and global logistics to minimize downtime.
Deeply understand your load capacity, stroke length, and application limits to ensure perfect fit.
Tailored mechanical design with rapid 2D/3D CAD support for faster approval.
High-precision machining, tight tolerances, and short production cycles.
Two-stage inspection to guarantee zero-defect before final testing.
Full load, stroke, and noise testing, then dispatch in as fast as 3 days.
Every screw jack is strictly tested—from raw materials to final loads—to ensure precision, durability, and reliable performance for every order.
Behind every order is a factory built for speed, scale, and precision. Here’s the proof in numbers.
39 years in manufacturing, guaranteeing proven quality and reliability for every order.
Fully equipped plant with advanced CNC and heat-treatment lines.
Including worm gear grinders and screw quenching equipment.
Stable capacity of 2,500 screw jacks per month.
Get expert guidance anytime, for life.
From renewable energy to metallurgy, medical, and more.
Fast technical support for any service request.
On key components, plus lifetime technical consultation.
As your dedicated linear motion expert, I bridge the gap between your engineering needs and our factory floor. I ensure you get the exact 1:1 replacement or custom lifting solution your application demands – quickly and accurately.
Our solutions help clients worldwide reduce downtime and increase production efficiency. Partner with us for seamless integration, faster delivery, and measurable results.
We have listed some common questions from screw jack and linear actuator buyers. If you still have specific requirements or need technical advice for your project, send us an inquiry and our team will respond within 24 hours.
Standard models are usually shipped within 7–15 days. For urgent orders, we can arrange dispatch in as little as 3 days. Custom designs typically require 2–5 weeks depending on complexity.
Yes. We offer 100% custom solutions — from load capacity, stroke length, and gear ratio to mounting style and material. Send us your requirements or drawings for a tailored quotation.
Our screw jacks are drop-in replacements for many OEM brands. We provide precision-matched alternatives for: INKOMA, ZIMM, Duff-Norton, Joyce Dayton, NOOK, Power Jacks, Unimec, Pfaff, NEFF, Thomson, MAKISHINKO, Servomech, Grob, Nozag, Setec, Marzorati, TSUBAKI, ENZFELDER, Chiaravalli, Benzlers, RISAM and more.
Just provide your part number or a photo for precise matching.
We provide a 12 months warranty on key components and offer lifetime technical support. Any issues reported within the warranty period are resolved promptly.
Yes, we support orders starting from just 1 unit, allowing you to test our quality and compatibility before committing to larger quantities.
Screw Jacks – Buyer Questions & Engineering Answers
A screw jack (linear actuator) is a heavy-duty mechanical motion device designed to convert rotational torque into linear force. It is the industry standard for synchronized lifting, tilting, or precise positioning of axial loads where reliability and safety are paramount.
Worm Gear Set: A hardened worm shaft driving a high-tensile bronze worm wheel.
Lead Screw: Precision-rolled Trapezoidal (Acme) screw for self-locking or a Ball Screw for high-efficiency cycles.
Housing: Robust enclosures designed to dissipate heat and support high axial thrust loads.
Thrust Bearings: Heavy-duty bearings engineered to manage intense axial pressure during operation.
Rotating the input worm shaft (manually or via motor) turns the internal worm wheel, which then drives the lead screw linearly. The output travel speed is determined by the screw pitch, gear ratio, and input RPM.
Machine Screw Jacks: Utilize trapezoidal screws and offer inherent Self-Locking capabilities in most ratios, maintaining position without power.
Ball Screw Jacks: Utilize rolling-element ball nuts for up to 90% efficiency, supporting high-speed and high-cycle applications, though they require a motor brake.
Translating Version (S): The non-rotating spindle moves linearly through the gearbox housing. It is the ideal choice when the load can be directly attached to the screw and space is available for the spindle to extend through the housing.
Rotating Version (R): The spindle is axially fixed and rotates to drive a traveling nut linearly along its length. This version allows for flexible spindle geometry and is ideal for long strokes where screw stability (mitigating column buckling) is a priority.
Industrial equipment height adjustment
Positioning of heavy machinery or structures
Lifting platforms and work tables
Linear motion systems requiring precise control
Stabilizing and leveling machines
To ensure a reliable system, selection must balance basic physical requirements with long-term engineering safety。Please provide the following specifications：
Load Capacity: Define the maximum total weight. Always choose a jack rated above your peak expected load to ensure a safety margin。
Stroke & Speed: Specify the total linear travel and required movement speed. This determines the gear ratio and motor power needed。
Screw Type (Machine vs. Ball): Choose Trapezoidal for self-locking safety and heavy static loads, or Ball Screw for high-efficiency, high-speed, and high-duty cycles。
Configuration (S vs. R): Choose the Translating (S) version for direct axial travel, or the Rotating (R) version for long strokes or limited mounting space。
Critical Engineering Safety: Our team will help you verify Column Buckling (for long strokes) and Thermal Limits (for frequent operation) to prevent system failure。
Yes. Manual operation utilizes a hand crank for maintenance or low-frequency tasks, while Electric Actuation uses motors for high-speed, precise integration with automation systems.
Advantages: High load capacity, precise control, and self-locking safety.
Limitations: Generally slower than hydraulic systems and require periodic lubrication to manage friction and heat.
To maximize service life and prevent downtime, follow these essential protocols:
Proactive Lubrication: Regularly apply high-quality Extreme Pressure (EP) grease to the lead screw and internal worm gearing to manage heat and friction.
Contaminant Protection: Use bellows (boots) to shield the screw from abrasive dust and moisture—this is the most effective way to prevent premature wear.
Wear Monitoring: Periodically check for axial backlash and unusual vibration. An increase in play is the primary indicator that your components need servicing.
Request Quote Now !
Looking for support or a quote? LiuDrive is ready to assist you with product selection, customization, or any technical inquiry. We typically respond within 24 hours.
Need a quote or technical support? LiuDrive provides 1:1 brand replacements, custom solutions, and expert selection. We respond within 24 hours.
Need a quote or technical support? LiuDrive provides 1:1 brand replacements, custom solutions, and expert selection. We respond within 24 hours.
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