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Hydraulic accumulator HYDAC SB
Hydraulic accumulator HYDAC SB (HYDAC) is supplied as a genuine part. A Chinese-made equivalent with matching mounting dimensions and ratings can be sourced on request.
Send the part number or a photo — we confirm stock and lead time with your quote within 24 hours.
Hydraulic accumulator HYDAC SB
We match a genuine part or a quality equivalent to your application. Send the part number or a photo — we reply within 24 hours.
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About hydraulic accumulators
Hydraulic accumulator HYDAC SB is a hydraulic accumulator used to store fluid energy and smooth pressure pulsations in a hydraulic system.
Accumulator types
| Type | Characteristic | Application |
|---|---|---|
| Diaphragm | Compact, fast response | Mobile machinery, small volumes |
| Bladder | Large volume, high energy capacity | Presses, energy storage |
| Piston | Stable supply without a gas cushion | Precision systems, continuous duty |
What matters when selecting
- Volume — calculated from the required fluid volume and pressure differential.
- Working pressure — including peak pressure, usually with 20–30% headroom.
- Gas precharge — typically 0.7–0.9 of the minimum working pressure.
- Connection — threaded or flanged, with the right seal type.
Always check for a certificate and casing marking — this is a pressure vessel and the requirements are stricter.
Frequently asked questions
Does the accumulator need charging before installation?
Diaphragm and bladder accumulators are supplied with a nitrogen precharge, but it must be checked and adjusted for the specific system.
Can air be used instead of nitrogen?
No. Air contains oxygen which, in contact with oil, forms an explosive mixture. Only technical nitrogen is used.
How often should the precharge be checked?
We recommend checking at every scheduled system service, and whenever performance drops or pulsation appears.
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