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How to choose your hydraulic jacks

  • Categories:Company News
  • Author:Shawn
  • Origin:
  • Time of issue:2021-03-21 16:54
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(Summary description)Hydraulic jacks or cylinders, hydraulic rams, no matter what you call it. A hydraulic jack uses a liquid, which is incompressible, that is forced into a cylinder by a pump plunger, which is used to apply great forces or lift heavy loads. When it comes to lift or move, push or pull objects, sometimes it is difficult and troubling in choosing the right jacks because it encompasses so many different types and hydraulic jacks varies in capacity, stroke, working space conditions, shapes, how you are going to use it.

How to choose your hydraulic jacks

(Summary description)Hydraulic jacks or cylinders, hydraulic rams, no matter what you call it. A hydraulic jack uses a liquid, which is incompressible, that is forced into a cylinder by a pump plunger, which is used to apply great forces or lift heavy loads.

When it comes to lift or move, push or pull objects, sometimes it is difficult and troubling in choosing the right jacks because it encompasses so many different types and hydraulic jacks varies in capacity, stroke, working space conditions, shapes, how you are going to use it.

  • Categories:Company News
  • Author:Shawn
  • Origin:
  • Time of issue:2021-03-21 16:54
  • Views:
Information

 

In this article we are going to explain hydraulic jacks as a kind of hydraulic tools, how to choose among different types jacks. Ningbo Instruments Mechanics Co., Ltd is a dedicated hydraulic jacks manufacturer, we offers different kinds of jacks to different industries, even customized service.

 

Definition

Hydraulic jacks or cylinders, hydraulic rams, no matter what you call it. A hydraulic jack uses a liquid, which is incompressible, that is forced into a cylinder by a pump plunger, which is used to apply great forces or lift heavy loads.

 

When it comes to lift or move, push or pull objects, sometimes it is difficult and troubling in choosing the right jacks because it encompasses so many different types and hydraulic jacks varies in capacity, stroke, working space conditions, shapes, how you are going to use it.

 

Hydraulic jacks category

 

Hydraulic jacks can be categorized into different types or groups,

  1. Single acting hydraulic jack – It extends by pressure from a pump and then retracts by the weight of the load or by an inbuilt spring, because the fluid only having one access point or port into the cylinder.
  2. Double acting hydraulic jack – It uses hydraulic power to both extend and retract, both the head and rod ends contain ports for pumping fluids, the hydraulic fluid to the rod end will retract the piston rod and pumping fluid to the head end will extend the piston rod.

So it is easy to understand between single acting and double acting jacks. When you need fast and efficient, higher tonnage, jacking very often better select double acting jacks. But you have small job, do not use very often, just occasionally, single acting would be better.

  1. Capacity. Before you buy any jacks, you should have an idea where it will be used, for how many tonnage it will be needed. Ningbo Instruments Mechanics Co., Ltd, manufactures hydraulic jacks capacity range from 5 ton to 2, 000 ton. So if the object you need to lift is 500 ton, you will probably need double acting high tonnage hydraulic jacks.
  2. Stroke. Hydraulic jacks stroke is the cylinder bore (piston) travelling length while pumping. So for how long the hydraulic jacks will need to lift, pull, push will determine the jacks you need. However, if the jack is used in different scenarios you will have to consider every time the stroke need, so you may need longer stroke. Ningbo Instruments Mechanics Co., ltd can customize the stroke in your specific working conditions.
  3. Working conditions or environment. While you use jack, you will have to think the space the jack will be put, height, jack diameter, piston length (stroke).

 

Special requirements.

  1. Hydraulic jacks with mounting plunger. Sometimes the hydraulic jacks will be mounted to the objects the jacks supported or lifted, so jacks with mounting plunger may need.
  2. Locknut hydraulic jacks. In some use cases, the jacks will need to hold pressure for hours, days, or even month to keep the objects carried in certain position, then lockout hydraulic cylinders will apply.
  3. High pressure hydraulic jack. Normally, our hydraulic jack pressure are 700 bar or 10,000 psi, however, we have hydraulic jacks up to 3,000 bar. For some cases, space is very limited we may need ultra thin and high pressure jack to lift or support very heavy stuff.
  4. Pile load testing jack. This type of jacks are very often used in construction industry. Pile loading test jack is used to test the suitability or design requirements of the pile or foundation.  Load testing use hydraulic jack to verify that the load capacity in the constructed pile is greater than the nominal resistance (Compression, Tension, Lateral, etc.) used in the design. Ningbo Instrument Mechanics are able to supply load testing jacks in different capacity, stroke, and customization service offered.
  5. Prestressed jack or strand jack. A prestressed hydraulic jack commonly used prestressed tendon tensioning, which is widely used in prestressed construction projects such as highway bridges, railway bridges, hydroelectric dams, and high-rise buildings to strengthen the durability of span the life of concrete slabs.
  6. Lifting points – Synchronous hydraulic lifting system. In many lifting or supporting cases, we need more than 2,or 3 points to lifting evenly and simultaneously. For instance, many times to change or maintain bridge supporting gaskets, we need to lift the bridge deck simultaneously, then 4,8,16 lifting hydraulic system may need.
  7. Cost and time – Choose the right jack with the least money. Many times people tend to choose bigger than what they need, a good example is that we are choosing our computer, we prefer high speed CPU, redundant ram capacity, too big hard disk, it is a waste of money. Choose the RIGHT JACK you need, not the big and best ones. Ask your supplier, when they can deliver, Ningbo Instruments Mechanics are able to deliver general and commonly standard hydraulic jack in less than 2 weeks, because we keep some stock at our warehouse. Other special or customized jack may need 2-4 weeks delivery time.

 

In a word, the lifting objects, working conditions, application scenarios, capacity, stroke determine which types of hydraulic jacks you need. If you still don’t know to choose your jack, send me an email: sales@tarzaninstruments.com, WhatsApp/Instagram/Facebook: +8618602116429. We are always ready to give you advice.

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