R, RD, RGG and RDG: Power Team heavy-duty cylinders

Distinguish load return from hydraulic return

The catalogue describes RGG as a single-acting series with load return. RDG is double-acting with hydraulic return. The RD and R series also include double-acting cylinders for demanding pressing and lifting tasks.

These differences affect the valve, hydraulic lines and controls required. They are particularly important where the actual operating conditions do not allow the return stroke to rely on an external load alone.

Read force specifications correctly

Depending on the table, the metric catalogue lists a nominal force class, forces in kilonewtons and a separate column for force at a specified pressure. These figures should not be treated as equivalent without checking. The stated operating pressure is decisive when comparing them.

Double-acting models have different effective areas for extension and retraction. Pushing force, return force and oil requirement can therefore differ.

Treat several cylinders as a system

For multiple load points, load distribution, cylinder stroke and the control concept must be planned together. A common manifold alone does not establish controlled synchronous movement. System requirements should be defined before selecting individual cylinders for these tasks.

Important for your enquiry

• What load acts at each individual point?
• Is a hydraulic return stroke required?
• Do several points need coordinated movement?

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