The introduction and comparison of SWL series/SJA series/JWM series worm gear screw jack
SWL, SJA, and JWM are three widely used types of worm gear screw jacks, applied across machinery, automation, stage equipment, and heavy industries. While all three operate on the same worm gear and screw principle, they differ in structure, load capacity, precision, and typical applications.
The SWL series is a classic and cost-effective choice, suitable for general lifting, pushing, and adjustment tasks. Customers looking for reliable worm gear screw jack suppliers will find SWL to be a proven solution for moderate loads and standard industrial applications.
The SJA series offers a modular and compact design, providing higher precision and efficiency. With multiple configurations and optional accessories, it is ideal for automated production lines and multi-point synchronized systems. This series is often selected as a mini screw jack lifts for projects requiring smooth and controlled movement.
The JWM series is a reinforced heavy-duty model designed for low-speed, high-load, and highly stable operation. Compact variants are also available, making it suitable for applications needing screw jack actuator without compromising strength or reliability.
Below is a comparison of the three series:
Feature/Series
SWL Series
SJA Series
JWM Series
Product Type
Classic general-purpose
Modular precision type
Heavy-duty reinforced type
Structure
Mature,standard components
Compact, supports multi-jack use
Robust, durable, shock-resistant
Load Capacity
0.5T – 100T
1T – 50T
1T – 120T
Precision & Stability
Standard
Higher than SWL
High, long-lasting
Typical Applications
Mold adjustment, stage lifts, general equipment
Automated lines, precision adjustment, synchronized lifting
Metallurgy, energy, heavy machinery
Cost
Low
Medium
Medium–High
From above we can see that SWL emphasizes versatility and cost-effectiveness, SJA focuses on precision and automation, and JWM provides durability and stability for heavy-duty applications. Understanding these differences helps you choose the most suitable series for their specific industrial requirements.