The hydraulic jack is a very great advance in every way

Posted by yipengjack on August 31st, 2017

Hydraulic Jack come in a variety of sizes, capacities, and alloys, allowing for versatility of use and ease of storage and transport, but have you ever considered what exactly happens inside the jack that allows your strength to lift even a three ton vehicle? The answer is in the name, and is an ancient technique that has powered machinery since around 200 BC – hydraulics. The study of hydraulics spans a huge field, but in particular here, is the transmission of power using fluid; namely, the transmission of the downward movement of your arm, to the upward movement of your vehicle.

The hydraulic jack is a very great advance in every way on any form of screw-jack in existence. It is a simple means of raising enormous weights with very small effort, with, of course, a proportionate loss in speed. It is invaluable when heavy loads have to be moved or raised by hand labour alone, for by its use large pieces of material or machinery can be placed in their permanent positions without entailing the installation of expensive lifting apparatus, such as cranes, etc.

Although the full extent of a single lift with the hydraulic jack is seldom more than 10 inches, yet, by means of properly arranged timber "packing" to support the load at the height attained by one lift, the machine or material being raised can be lifted to any desired height by successive lifting and packing. In Fig. 224 a section of the most usual form is given, which combines in itself two functions, lifting either by the head A or by the foot N, the latter arrangement being intended for use when space is limited. Also 3 Ton Jack Stands more popurle online.