Hydraulic components

Hydraulic cylinders and their application.

Chapel Hydraulique manufactures Hydraulic Cylinder Crutch, Hydraulic Brake Cylinder, Hydraulic Hand Pump and Hydraulic Valve.

A hydraulic cylinder is made from a tube Inside of which a piston moves.

The piston separates the cylinder in two isolated chambers owing to a piston that make the seal between the chambers.
The piston moves by an injection of a fluid Inside one of the cylinder chambers.

The movement of the combination piston/rod engenders the movement of the piece we want to push or to retract.

A hydraulic cylinder works owing to pressured oil (mineral hydraulic oil), contrary to pneumatic cylinders that works with compressed air.
The air is compressible, (we can compress or uncompress it, and it will re-take it volume if the pressure and the temperature go back to their initial state).
Hydraulic oil is uncompressible: in a hydraulic system, a pump produces the necessary pressure to make the cylinder works. The hydraulic control is made by modular hydraulic valves.

The main characteristics of a cylinder are its' stroke, its' piston & rod diameter, and its' working pressure:

The stroke is the length of the movement produced by the cylinder.
The force generated dépends on the fluid pressure and the piston's diameter.
The force generated by a cylinder is equal to F= P X S.

Force F can be translated into Tons; pressure P into Ba, application area of pressure into S in cm² but some other measurement system can be used.

Several kind of hydraulic cylinders exist: single acting cylinder, with rod guide ring, double acting, telescopic, crutch, brake cylinders...
A single acting cylinder works in only one way (push).
The alimentation in pressured oil of the cylinder is done through one oil port: the piston is pushed in one way.
A double acting cylinder works in two ways (push and pull). It has 2 oil ports.
It is mainly used for applications that require a pull force in direction of hydraulic cylinder body.
Chapel's telescopic cylinders are specifically made for tippers.
To choose the stroke of a tipper telescopic cylinder, it is necessary to measure the distance between the telescopic cylinder pivot and the tipping pivot, and to measure as well the maximal inclination of the tippers.
To rightly dimension the telescopic cylinder, the main criterion is the minimal force to develop to tip the charge so as to choose the rod diameters and then the rod buckling.

To choose a telescopic cylinder, please refer to: How to choose a telescopic cylinder?

A hydraulic tipper scissor system is a lifting tool: it cannot be used neither at stabilizing nor at guiding the tipper body. It must be used in the regular bucket tipping for which the contents must be progressively poured. It is really important to consult and respect recommendation linked to the hydraulic tipper using & to respect safety rules.

Informative indications that are not contractual, thanks for consulting our catalog and our standard terms of sale.