HYDAC Piston Accumulators – High-Pressure Energy Storage for Demanding Environments
HYDAC piston accumulators are engineered for hydraulic systems that require high operating pressures, large volume capabilities, and maximum structural durability. As a trusted hydraulic supplier in Perth, Gerrard Hydraulics provides HYDAC piston accumulators designed to improve system efficiency, protect critical components, and provide reliable energy backup when it’s needed most.
Whether you’re specifying a piston accumulator for a hydraulic system, upgrading plant performance, or replacing units on heavy machinery — we support correct selection and supply across Western Australian mining, industrial, marine, and energy sectors.
What is a Piston-Type Hydraulic Accumulator?
A piston accumulator consists of two chambers separated by a floating piston:
- Gas Section (nitrogen pre-charge ➝ stores potential energy)
- Fluid Section (connected to the hydraulic circuit)
When system pressure rises, the piston compresses the gas and stores hydraulic energy.
When pressure drops, the gas expands — returning fluid to the system instantly.
This makes hydraulic piston accumulators essential for:
✔ Energy storage & flow supplementation
✔ Shock and pulsation dampening
✔ Pressure stabilisation & leakage compensation
✔ Emergency hydraulic power backup
Why Choose HYDAC Piston Accumulators?
HYDAC is recognised globally for accumulator innovation — their piston units provide:
- High pressure capability (up to 20,000 psi depending on model)
- Wide operating temperature range — ideal for extreme WA environments
- Large volume options (up to 3300+ litres)
- Field-serviceable design for lower long-term maintenance cost
- High efficiency with minimal friction
- Fast response capability for high-demand actuation
They can be installed in any orientation, with vertical (gas side up) recommended for longer seal life.
Technical Design Features
Every HYDAC hydraulic piston accumulator includes:
- Precision-machined cylinder for long service life
- Lightweight floating piston for fast acceleration
- Optimised sealing systems suited to specific application demands
- Optional corrosion-resistant materials & low-temperature variants
- Protection from metal-to-metal contact via guide rings
HYDAC sealing systems are selected based on:
- Operating fluid
- Temperature range
- Switching frequency
- Pressure differential
- Cleanliness level (filtration requirements)
Applications of Piston Hydraulic Accumulators
Piston-type accumulators are preferred where performance cannot fail, especially in:
| Industry | Key Uses |
| Construction & Mining | Boom suspension, braking, steering stability, shock absorption |
| Oil & Gas / Offshore | Subsea hydraulic control systems, BOP, mud pumps |
| Energy Generation | Wind turbine pitch control systems |
| Heavy Manufacturing | High-tonnage metal forming presses |
| Test Rigs & R&D | Precision control and repeatable testing |
Their durability, pressure rating, and serviceability make them the go-to accumulator for WA’s harshest environments.
Piston Accumulators vs Other Types
Why choose a piston accumulator over a bladder or diaphragm accumulator?
| Feature | Piston | Bladder | Diaphragm |
| Max Pressure | ★★★★★ | ★★★★☆ | ★★★☆☆ |
| Temperature Range | ★★★★★ | ★★★☆☆ | ★★★☆☆ |
| Fluid Compatibility | ★★★★★ | ★★★★☆ | ★★★★☆ |
| Response Speed | ★★★☆☆ | ★★★★★ | ★★★★☆ |
| Maintenance | Serviceable | Replaceable | Replaceable |
Download HYDAC Piston Accumulator Documentation
Full specifications, installation guidelines, and sizing support:
Download Hydac Piston Accumulator Brochure
Installation & Safety Guidance
- Operates in any orientation (vertical recommended for longevity)
- Use mounting clamps for volumes >1 litre
- Must only be charged with nitrogen (Class 4.0 purity or better)
Gas velocity should remain below 30 m/s
Oil velocity should remain below 10 m/s
Our technicians ensure compliance with Australian Standards and correct pre-charge configuration for optimal performance.
WA’s Trusted HYDAC Piston Accumulator Supplier
At Gerrard Hydraulics, you get:
- Perth-based HYDAC accumulator distributor
- Expert support for correct sizing, type selection, and sealing configuration
- Local stock + fast sourcing for shutdown and breakdown repairs
- Servicing support for nitrogen recharge and accumulator maintenance
We supply piston hydraulic accumulators to WA’s leading:
✔ Mining operators
✔ Drilling and offshore assets
✔ Mobile plant fleets
✔ Manufacturing facilities
Need Help Specifying a Piston-Type Accumulator?
If you’re referencing a HYDAC piston accumulator, upgrading system components, or replacing old units — our hydraulic specialists are ready to assist.
Contact Gerrard Hydraulics
📞 (08) 9455 2344
✉️ enquiries@gerrardhydraulics.com.au
📍 39 Sorbonne Crescent, Canning Vale WA 6155
Servicing Perth, Western Australia & remote industrial sites
