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Jack Stands

Jack Stand is a secure holding device that secures heavy loads once lifted by a floor jack. These are usually rated for a maximum lifting capacity (for example, 1.5 tons or 3 tons).

 Hydraulic jacks are typically used for shop work and requires more than the usual care in selecting the ground condition, the jacking point of the vehicle, and ensuring stability when the jack is extended. It makes use of a liquid, which is compressible, that is forced into a cylinder by a bump plunger, Oil is being used because of its properties and it is self-lubricating and stable. When the plunger is pulled back, it throws oil out of the reservoir through a suction check valve into the pump chamber, When the plunger is move forward, it pushes the oil through a discharge check on the cylinder. The suction valve is within the chamber and opens with each draw of the plunger. The discharge valve ball is outside the chamber and opens when the oil is pushed into the cylinder. At this point, the suction ball within the chamber is closed and oil pressure takes on the cylinder.

An inflatable jack, lifting bag is an airbag that is inflated by compressed air in order to lift objects. The bag can be deflated for reusing. The objects can be smaller loads such as an automobile.