Hydraulic jacks have hundreds of models and specifications, which can achieve lifting, lowering, stretching, retraction and other functions in operation through the jacking and contraction of the piston, which is a simple and convenient universal tool. After years of development, the performance has been greatly improved, and many details have been designed to be more and more user-friendly. We still need to know the difference between various jacks in use and choose a hydraulic jack of the appropriate specification in order to play its due function.

Shape difference:

In the finished hydraulic jack warehouse of Jiangsu Kent, we see a variety of hydraulic jacks of different specifications and models, which are also diverse in appearance.

The first is the change in height, as the rated bearing capacity of the same type of jack increases, its cylinder wall thickness is also getting bigger and bigger, and the height is also increasing. Due to the limitation of space in the use occasion, the height of the jack also adapts to the size of the space, and the lowest height is only 30mm; There is also a double-acting jack up to 1219mm.

By the number of inlets and outlets, it is possible to distinguish between single and double acting. The single-acting jack piston rod is retracted by spring or heavy load retraction; The double-acting jack controls the retraction of the piston rod by hydraulic pressure.

Micro top with a carrying capacity of 5T; There are also 1000T large tonnage jacks.

In addition to ordinary solid rods, the center piston rod also has hollow jacks with hollow center pistons, which are used in occasions where tensioning is required.

In addition, according to needs, the jack can be equipped with an aluminum alloy handle and added lifting lugs to facilitate on-site use, carrying, lifting and handling. In order to meet the needs of special working conditions, some hydraulic jacks are equipped with threaded assembly holes at the bottom of the cylinder block, which can be used as a match. The jack is equipped with a spherical saddle to accommodate uneven components.

Here is an explanation of the differences between more specifications and models: Hydraulic jack selection

Usage Difference:

In pipe jacking construction projects, we generally use long-stroke jacks (there are special jacks for pipe jacking).

The low-profile roof is suitable for places where space is extremely tight, such as the jacking of large rolls in steel mills, the adjustment of welding structures, and the lifting of other mechanical maintenance. In addition, the occasion of bridge jacking is generally controlled by multiple thin roofs at the same time to accurately jack. For example, in this project: the intelligent control synchronous jacking hydraulic system is used for the replacement of box girder structure bearings at the Haikou interchange

Hollow jacks are used When a drawbar or cable needs to be passed through the entire hydraulic cylinder, its unique center hole design can complete backward traction and forward squeezing. For example: oilfield oil pipeline equipment maintenance, large heat exchanger assembly and use, large windmill synchronous lifting and translation, etc.

The tensioning jack is mainly suitable for the construction of various prestressed concrete structures, highways, railways, power stations, bridges, geotechnical anchoring, landslide control, overall lifting of large heavy objects, continuous jacking of super-heavy parts, dismantling of interference and machinery, etc.

Pull jacks are suitable for situations where tension and closure are required, such as propeller mounting and lifting in shipyards.

There are also multi-stage jacks and multi-section tops, which are convenient for realizing one-time jacking operations with large strokes in a small space.

We should choose the right jack according to the specific use occasion.

Price Difference:

With the increase of carrying tonnage, the price also increases. The increase in volume and the increase in raw materials are the basis for price increase, and large tonnage also means that the requirements for raw materials are also higher, and the increase in processing difficulty is the basic consideration for pricing jacks. We know that the hydraulic jack with moderate price and high cost performance is the product that the public wants, so we are constantly optimizing the production process while providing customers with an excellent product, and provide a cost-effective jack with the most suitable method.