There are several types of car jacks, including screw jacks, hydraulic jacks, horizontal jacks, and scissor jacks. These jacks have different working principles, structures, styles, and colors, and their ability to resist deformation when facing heavy car objects also varies.

The scissor jack looks fragile and has a relatively low lifting capacity. It can only lift vehicles weighing 1 or 2 tons, making it suitable for small car models such as small cars, tricycles, elderly scooters, and motorcycles. Although using a scissor jack within its rated range will not cause deformation of the jack, once overloaded, the bracket made of solid steel shafts will still undergo axial tension or compression deformation.

Relatively speaking, hydraulic jacks and horizontal jacks with thicker bodies and stable bases have stronger resistance to deformation. However, due to the hydraulic lifting system they rely on, there may be insufficient lifting capacity when problems such as oil leakage and poor oil quality occur.

After comparison, we found that the spiral jack made of ductile iron material is solid, stable, and flawless. Its body has strong load-bearing capacity, the internal force transmission device is stable, and it also has strong deformation resistance when lifting heavy objects. It is a relatively reliable car jack.