Jack

Definition - What does Jack mean?

A Jack is a mechanical lifting tool used for lifting heavy loads and applying great force. It multiplies a very small force applied to easily lift massive objects and move them to the desired location. The device lifts, holds, pulls, and bends or pushes massive objects in most commercial and industrial environments. The national as well as international standards are developed to standardize the performance and safety requirements for the Jack and all other lifting tools. The selection of standards is an agreement between the manufacturer and purchaser with some significance in the Jack design.

Petropedia explains Jack

Jacks are the lifting devices manufactured according to specific requirements. Mechanical jacks apply screw thread while hydraulic jacks employ hydraulic power to lift heavy equipment. The most common types of jacks are floor, garage and car jacks which are used to lift vehicles to perform maintenance operations. They are manufactured on a wide range by reputable and quality lifting including optional toe heights, rotating body and various other choices for lifting and moving heavy objects from one place to another.

The mechanical jacks use mechanics for lifting heavy objects such as:

  • Lifting Screw Jacks
  • Rack and Pinion
  • Journal Jacks
  • Sluice gate jacks
  • Wear gear Jacks
  • Ratchet Jacks
  • Spindle Support Jacks.

All mechanical jacks perform different functions. Hydraulic jacks employ pressurized oil for lifting loads by user who applies force on the Jack handle which is connected to built-in pump. When more pressure is built in the hydraulic circuit by continuous pumping of handle, a Jack extends the length of the cylinder and raises the load.

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