A car will be standard in many common vehicle tools, jack which is an important tool for today we have to explain the use of the family car is equipped with several common jack.

role of jack

In general, when a vehicle replacement tires, vehicle chassis preliminary examination of the case will be used to jack.

kind jacks

It can be divided into rack jacks, screw (mechanical) jacks and hydraulic (oil) jacks and inflatable jack (pneumatic) four.

rack jacks

This is the most common family car jack form, levers and gear drives the rack top heavy lifting, there are two such jacks style, one is the "herringbone", one is the "diamond" of manpower through.

Advantages: lightweight, folded small size, good storage.

Disadvantages: the support is not very strong, to support the limited weight, generally used only for one ton of head family car.

screw jack

Screw jack is self-locking effect on the screw to support the weight.

Advantages: This jack simple structure, reliable service life and load capacity is relatively large.

Cons: However, this type of jack commonly relatively heavy weight, and transmission efficiency is relatively low, slow lift.

hydraulic jack

Such use of hydraulic pressure to the lift jacks to use when comparing saving, the principle is manually oil reservoir chamber through the check valve is pressed into the cylinder to lift the weight.

Pros: lifting and lowering speed quickly, and generally the maximum loading capacity are large, about 3 tons. Most auto repair shop to see it

Cons: But this kind of volume than the above two jack jack to be much larger, inconvenient to carry, so basically do not appear in the toolbox family cars, only if required to purchase their own individual.

No matter what kind of jack, the owner friends must remember that they are rated to support the weight biggest general family car jack to support a maximum of 700-1500 kg; maximum support the weight of the jack of off-road vehicles popular in 1500-3000 kg.

inflatable jack

Another type of unusual professional jack - inflatable jack. It is the use of a vehicle exhaust gas to inflate the air bag, the largest general support the weight of such a jack of about 4 tons, more dangerous conditions for rescue or off-road vehicles of self-help and rescue the domestic auto parts store sales, general sale price of around $ 500.