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What is the difference between hydraulic jack and mechanical jack

Update:14-12-2019
Summary:

The differences between hydraulic jack and mechanical j […]

The differences between hydraulic jack and mechanical jack are: different forces, advantages and classifications.
I. different efforts
1. Hydraulic jack: it is a jack with a plunger or hydraulic cylinder as a rigid lifting part.
2. Mechanical jack: it is driven by manpower through screw pair, and the screw or nut sleeve is used as the jacking part.
II. Different advantages
1. Hydraulic jack: it has the characteristics of compact structure, stable operation, large jacking force and self-locking.
2. Mechanical jack: light weight, easy to carry. Easy to maintain, safe and reliable to use. Simple construction. It is an ideal large tonnage mechanical jack with large lifting capacity.

I. different characteristics
Hydraulic jack: compact structure, stable operation.
Mechanical jack: simple structure, large lifting capacity, light weight, easy to carry and easy to maintain.
II. Different principles
Hydraulic jack: the hydraulic jack is based on the Pascal principle, that is, the pressure in all parts of the liquid is the same, so in the balanced system, the pressure applied on the smaller piston is relatively small, and the pressure applied on the larger piston is relatively large, so as to keep the liquid still.

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