Many car owners in car trunk among other tools have jack. Sometimes there are situations when it is required to raise the car, and then the rolling jack appears the excellent assistant. Upon purchase of this tool it is necessary to consider its characteristics.
Operation principle of the rolling jack
Jacks call figurative, stationary or mobile mechanisms by means of which load lifting on certain height is made. On the device and the sizes such mechanisms are wedge, screw, pneumatic, rack, hydraulic, etc. The last type of automobile jack equipped with steel wheels and reminding the narrow cart is called movable.
Often hydraulic jacks are applied in firms of automobile service. Such jacks combine in one design piston pump with the lever manual drive and hydraulic cylinder.
These designs have the following advantages: high efficiency, full autonomy and safety of the repair work performed with their help. When choosing the rolling jack will not prevent to provide whether it will be applied in the conditions of, for example, personal garage or tire workshop. Such simple, reliable and effective lifting device is simply irreplaceable for small repair, replacement of wheels, rubber, rise and smooth descent of the machine in garage conditions. For full automobile service or small mounting the rolling jack is useful for work on repair of wheels or their replacement. Thanks to this tool it is possible to carry out repair on adjacent site or the parking that significantly saves time and forces.
Main criteria for selection of the rolling jack
Among the most important parameters it should be noted the loading capacity of hydraulic jack. There are devices with a loading capacity of 3, 5 tons and above, and exist also on 750 kg, for ATVs and motorcycles. Loading capacity in 2 tons can be quite enough for personal garage with the small passenger car. However the owner of more powerful equipment needs to give preference to loading capacity from 3 tons. At the same time the weight of the car should not exceed this indicator. Besides, rolling jacks have certain range of lifting height of cargo, from 80-130 mm to 350-800 mm. Choosing model option, it is necessary to take minimum height into account, considering requirement of placement of heel of the rolling jack under the place of emphasis in car body. The persistent pin which is inserted into the special slot significantly increases safety of operation of jack in the lifted state with cargo. And though the safety measures most strictly forbid operation without emphasis in bracket or rack, such requirement is frequent it is not observed.
Availability of pin guarantees avoidance of unexpected folding of jack because of fault of the mechanism of the automatic hydraulic jack.
As for the lever, it is shorter or longer, at it the special forms of handle can be had thanks to what it becomes more convenient to work. Important criterion when choosing the rolling jack is also lever handle length. It is obvious that it is simpler to lift the heavy and large car the mechanism with longer handle. In turn, for passenger cars the option with the short handle will become more practical.
Manufacturing firms of jacks have also provided option with combined lever handles that gives the chance to regulate length according to requirements of certain situation.
The weight of various models of rolling jacks can differ considerably. The easiest devices weigh about 5-6 kg, the following category - about 12 kg. At the same time the curb weight of jack and loading capacity are directly not connected. For example, cargo 2 tons are capable to lift mechanisms weighing 10-50 kg. Jacks of Ultra, Sigma, Miol, Matrix and also products of domestic manufacturer "BISON of OVK" have the best loading capacity and the compact sizes. Besides, you can buy quite good budgetary analog of the Taiwan or Chinese production.