The key factor for a screw jack to lift heavy objects lies in its internal ratchet transmission structure. The force is transmitted through small gears, becoming a strong force, and finally lifting the heavy object. The factors that determine the lifting height of the jack are its design and structure.

The following are some factors that may cause different lifting heights of screw jacks:

1. The height of the lifting sleeve and the height of the body: The height of the screw jack is closely related to these two factors. The lifting sleeve is a working component of the jack, which is lifted to a high position by the force transmitted from the internal ratchet group of the jack. Its length determines the lifting range of the jack, while the height of the jack body determines the starting height of the jack.

2. Spiral rod diameter: The diameter of the spiral rod also affects the height of the screw jack. Thicker spiral rods can withstand greater forces and provide higher lifting heights.

3. Jack architecture: The architecture and design of a screw jack can also affect its height. Different architectures may adopt different design parameters, resulting in differences in height.

Spiral jack is a lifting equipment designed and produced for lifting heavy objects. Its lifting height is related to the lifting height of the heavy object. When lifting heavy objects in low and low situations, we can choose a low body jack. In lifting large and heavy objects, we can choose a high body jack.