Accumulators, F9.601 (Large)

ROEMHELD Power Workholding

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Product Information

7250 psi max

These nitrogen-filled diaphragm-type Accumulators are ideal for workholding applications. Hydraulic Accumulators are used on workholding fixtures to 1) store energy, 2) reduce the effect of temperature changes on a closed system, and 3) compensate for slight internal leakage. Energy storage is required where the demanded flow between workholding cycles is greater than the pump flow rate (such as the pressure drop during automatic coupling or indexing operations) and on all disconnected fixtures (such as when additional fluid is required to compensate for slight workpiece movement on disconnected pallet fixtures). Temperature changes in a closed hydraulic system can cause significant changes in pressure (about 80 psi per 1°F). Internal leakage occurs in some hydraulic components, such as Rotary Valve Couplings. The large Accumulator shown here is the larger of two sizes, with 3.60 cu. in. capacity at 7250 psi).

Documents

F9.601

Data Sheet

Design Considerations & Safety Precautions

1. Use Pallet Decouplers only with our power-workholding components, because all components must have zero leakage.

2. In a closed hydraulic system, pressure will increase if fixture temperature increases. This increase can be quite substantial (about 80 psi per 1°F). Be careful not to exceed 7500 psi at any time during the machining cycle. Always install a pressure gauge to monitor operating pressure.

3. If the possibility of exceeding 7500 psi exists, install a Pressure-Relief Valve (CLR-2952-521-V) in the system.

4. Allowable operating temperature range is 15 to 175°F.

5. Shield the Accumulator if the possibility of accidental damage exists.

Mounting

Compact version has male 1/4" BSPP threads, for mounting into a standard port (can also be mounted onto tubing using adaptor fitting CLR-808-F). Large version has a 1/4" BSPP port (for additional stability, fasten to fixture using the four M8 tapped holes underneath). Mount in any position, horizontal or vertical. Do not use NPT fittings.