What is the difference between a hydraulic cylinder and a hydraulic jack?
They refer to the same product group in terms of function: equipment that generates force using hydraulic fluid. "Hydraulic jack" is the term more commonly used in the field, while "hydraulic cylinder" is the technical/engineering term. The Hydro Bard HBS series is a 700 bar class hydraulic cylinder/jack family known by both names.
Which hydraulic cylinder types do you manufacture?
Our four catalogue series are general purpose (HBS-GA), low profile (HBS-DP), hollow plunger (HBS-DL) and double-acting (HBS-CT) cylinders. We also manufacture high tonnage double-acting (HBS-HT, 200–1000 ton) and lock nut (200–1000 ton) cylinders.
What capacity range does the HBS series 700 bar hydraulic cylinder cover?
The HBS series covers a capacity range of 10–95 tons across 24 models in 4 sub-series (HBS-GA, HBS-DP, HBS-DL, HBS-CT). All models have a 700 bar class working pressure.
Which HBS series (cylinder/jack) should I choose?
For standard lifting and assembly, the general purpose HBS-GA series is suitable; for tight spaces or low closed height, the low profile HBS-DP series; for working over a stud or shaft, the hollow plunger HBS-DL series; and for controlled push-pull, the double-acting HBS-CT series. You can review the operating principle and use cases for each series in the comparison table.
What is the body material of HBS series hydraulic cylinders?
All HBS series models are manufactured with a lightweight 7075-T6 aluminum alloy body with hard anodized coating. This construction makes field use easier thanks to lower weight compared to steel-bodied equivalents.
In which applications is a 700 bar hydraulic cylinder (jack) used?
It is used in heavy industrial applications such as maintenance, assembly, lifting, pressing, pulling/tensioning, and controlled push-pull. You can fill out the technical quote form or review the comparison table to select the right series and model.
What is the difference between a 700 bar hydraulic cylinder and a standard-pressure hydraulic cylinder?
High-pressure (700 bar class) hydraulic cylinders deliver the same capacity with a smaller piston diameter and a more compact, lighter body. This makes it easier to work in tight spaces and improves field portability.
How is hydraulic cylinder tonnage selected?
The weight of the load to be lifted or pressed is determined, and an adequate safety margin is added to calculate the appropriate capacity. The HBS series offers 24 models in the 10–95 ton range; stroke, working space, and connection type also affect the selection.
What pump and connection standard does the HBS series work with?
All HBS models work with a 700 bar class hydraulic pump (hand pump or power unit) and a 3/8" NPT/F connection standard.
What is the difference between a single-acting and a double-acting hydraulic cylinder?
In single-acting models (HBS-GA, HBS-DP, HBS-DL), forward movement is hydraulic while return is provided by an internal spring mechanism. In double-acting models (HBS-CT), both forward and return movement are hydraulically controlled, making them preferred for controlled push-pull applications.
What is a hollow plunger (HBS-DL) hydraulic cylinder used for?
Thanks to its center-bored body, it can work over a stud, shaft, or rod; it is used in pulling, tensioning, testing, and lifting applications.
Where is a low profile (HBS-DP) hydraulic cylinder used?
It is used for lifting and alignment work in tight spaces where standard cylinders won't fit, thanks to its low closed height advantage.
How is a 700 bar hydraulic cylinder maintained?
Thanks to standard seal kits and a modular design, quick servicing can be done through periodic visual inspection and seal replacement. Not exceeding the specified tonnage and pressure limit of the model preserves sealing life.
In which sectors are industrial hydraulic cylinders used?
They are widely used in heavy industrial environments requiring lifting and pressing, such as power plants, cement and iron-steel plants, petrochemical facilities and refineries, shipbuilding, mining, and heavy machinery maintenance.
How is hydraulic cylinder pricing determined?
Price varies according to technical choices such as series, model, tonnage, and stroke. Instead of a fixed price list, we finalize pricing through a technical quote process specific to your application.
What is the difference between heavy-duty and light-duty hydraulic cylinders?
Heavy-duty hydraulic cylinders offer high working pressure, a reinforced body, and a design built to withstand frequent-use conditions. The HBS series, with its 700 bar class pressure and 7075-T6 aluminum alloy body, is suitable for heavy industrial use.
What should I do if the standard models don't meet my needs?
Beyond the standard 24 models, Hydro Bard also manufactures custom hydraulic cylinders for special requirements such as tonnage, stroke, or connection type. You can submit your requirement through the technical quote form.
Do you provide maintenance/repair service and spare parts support for your 700 bar hydraulic cylinders?
Yes. We handle maintenance and repair for all our GA/DP/DL/CT series hydraulic cylinders in-house — send us your unit and we'll inspect it and manage the repair process. We also manufacture original spare parts on request for the models we produce; we don't maintain a separate parts catalog, but you can contact us directly for the part you need.
