Jack hydraulic podkatnoy. Advantages and disadvantages

Permanent attributes included in the packageany car, are, of course, the reserve and the jack. These are really the very things without which it is impossible to imagine not only a long journey, but also an ordinary city trip. As for jacks, they are of three types: bottle, rhombic and movable. In this article, we consider a hydraulic rolling jack.

Jacks of this type are used to perform tire repair and repair work not only at service stations, where they are an essential attribute, but also ordinary motorists.

Principle of work of a podkatny hydraulic jack

Внешне домкрат гидравлический подкатной It is a trolley whose rigid frame is able to withstand heavy loads. The principle of operation of such a jack is based on the law of Pascal. Installed on the basis of two communicating vessels, in which cylinders with pistons are located, are interconnected by channels having two valves (pressure and suction). At the top there is a lifting platform. The working fluid is, as a rule, technical oil. The oil filling the cylinder when the handle is rocked, filling the cylinder, raises the piston upwards. The jack is lowered due to pressure relief when the knob of the valve screw rotates around the axis.

Recommendations for choosing a rolling jack

Choosing a hydraulic rolling jack,first of all, you should decide on the conditions and for which car it will be used. It should be borne in mind that sliding hydraulic jacks differ in their carrying capacity and lifting height. For passenger cars, a hydraulic jack is usually used 2 tons (although they are designed for 5 tons) and lifting height up to 345 mm. If it is planned to lift the car, you need to focus on height, otherwise the jack may simply not crawl along the ground clearance. It is also necessary to take into account the length of the handle, although there are models with an adjustable handle.

In addition, you should decide on the manufacturer.On the modern market, these lifting devices are mainly models made in Europe and in China, and the Chinese are divided into professional and for personal consumption. An ordinary motorist who uses it on average once every six months, of course, is better to purchase a hydraulic jack that is designed for personal consumption, the price of which is half the price of a professional.

Like any devices, jacks haveits strengths and weaknesses. The advantage of the rolling jack is that with its help you can lift loads quite smoothly, without putting much effort, and also stop them exactly at a given height. As disadvantages, we can note the large weight and dimensions of the device, which may not be very convenient for transportation in the trunk of a car. In addition, for his work requires a smooth, smooth surface. Even the slightest incline can lead to the fact that the hydraulic jack of the roll-over fails.