Hydraulic Cylinder and Hydraulic Jacks - Information

Hydraulic jacks are nothing but mechanical actuators which are used for providing unidirectional force through unidirectional stroke. Hydraulic cylinders are available in different kinds which also include the special hydraulic cylinders. But, there are two primary types of cylinders known as welded body cylinders as well as tie rod cylinders. The special cylinders available in the market include the plunger cylinder, the telescopic cylinder, the position sensing cylinder and the differential cylinder. Another type available in the market is known as reciprocating cylinders and these are divided into two types namely double acting cylinders and single acting cylinders.  Here is a run down some of the special cylinders available in the market.

Telescopic Cylinder – A telescopic cylinder is made up of two pistons because another piston has to be used in cylinders where the connection length does not fit in the cylinder as the first piston is then used as a cylinder barrel. These type of cylinders are known as telescopic cylinders and mostly consist of single acting cylinders. They are highly expensive in nature as compared to conventional cylinders. Telescopic cylinders are multistage units.

Single Acting Cylinders in Telescopic Cylinders – Single acting cylinders have working fluid which acts of either side of the piston only and when the piston is to be pushed back in the other direction, the loads, springs and momentum of a fly wheel is relied upon. These cylinders are used in various different applications which include internal combustion engines, external combustion engines, sterling engines, hydraulic pumps and rams. 

Differential Cylinder – There is not much difference in an ordinary cylinder and a differential cylinder when it is pulled out. But, when it is pushed, the oil of the piston rod does not return to the reservoir but instead it flows from the piston rod side of the cylinder to the bottom of the cylinder. This cylinder is much faster than plunger cylinder but gives maximum force that is equal to that of the plunger cylinder.

Plunger Cylinder – This cylinder is used only as a pushing cylinder and comes with a relatively thick piston. This cylinder sometimes has pistons without any seals or sometimes there is no piston even.

Cylinder Design – The design of a cylinder includes various components like cylinder barrel, seals, sea gland primarily, cylinder head caps, butt plates, spherical ball bushings, cylinder head caps, alignment coupler, cylinder base connection, piston, cylinder barrel, cylinder base, etc. Oil is the pressurized fuel which provides power to hydraulic cylinder. The hydraulic cylinder is made up of cylinder barrel, with a piston which is further connected to the piston rod that moves forth and back. The barrel ends are closed with the help of cylinder heads and bottoms. The piston which has seals and sliding rings comes out of the cylinder at the cylinder head. Mounting attachments are provided for connection the machine component or object to the cylinder rod.

Thus, there are a variety of hydraulic cylinders available in the markets which are used for different applications in construction and engineering.