Description
Roemheld Large
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 1F). Internal leakage occurs in some hydraulic components, such as Rotary Valve Couplings. The large Accumulator is the larger of two sizes, with 3.60 cu. in. capacity at 7250 psi).
Design Considerations Safety Precautions
1. Use Pallet Decouplers only with The 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 1F). 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 Valvein the system.
4. Allowable operating temperature range is 15 to 175F.
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 fThe M8 tapped holes underneath). Mount in any position, horizontal or vertical.
Parts Specification
| Accumulator Size | Minimum Operating Pressure (PSI) | Accumulator Volume At 7500 Psi (cu. In.) | Accumulator Volume At 1800 Psi (cu. In.) | Accumulator Gas Preload (PSI) | Weight (lbs) |
| Large | 1800 PSI | 3.4 cu. in. | 0.9 cu. in. | 1450 PSI | 5.0 lbs. |
Reviews
There are no reviews yet.