Screw Jack

A: That depends on the size and design. We offer models ranging from 2 tons to 50 tons.

A: It depends. Screw jacks are better for precision and simplicity, hydraulic jacks are better for speed and higher loads.

A: Yes, especially if they’re coated for rust resistance. We recommend storing them in dry areas.

A: Yes. We support OEM services for color, logo, size, and packaging.

A: Yes, Screw Jacks can be manufactured entirely in stainless steel and equipped with food-grade grease approved according to H1 standards.

A: The housing is made of aluminum die-casting or gray cast iron, the spindle, protective tube, and worm shaft are made of steel, while the worm wheel or traveling nut are made of a bronze alloy. Additionally, there are many variants.

A: Yes. A Screw Jack can be operated with any rotary drive, whether electric, mechanical, or manual.

A: When under compression, typically buckling is the limiting factor. Under tension, it's either the availability of raw material (rods commonly available up to 6m) or the critical bending speed (in the case of the traveling nut version). For larger strokes, the spindle can also be made in multiple parts.

A: In the translating screw version, the spindle rotates while the load is moved linearly via a fixed-position nut.
In the rotating nut version, the spindle remains stationary, and the nut moves along the spindle. This version is especially suitable when the spindle must remain fixed while still allowing motion.

A: For simple, static applications, a trapezoidal thread is often sufficient. For frequent, fast or highly precise movement, a ball screw is usually the better choice.

A: That depends on the design. Standard gearboxes are typically not designed for transverse forces. For applications with lateral loads – such as in material handling or lifting vehicles – we recommend specially supported or telescopic solutions with additional guidance.