Piston Accumulators - Series SK280


“All our accumulators are dispatched without pre-charge. A pre-charge incurs additional cost. Contact us for more information.”

Fluids are practically incompressible and cannot, therefore, store pressure energy. So, the utilisation of compressibility of a gas (nitrogen) in hydraulic accumulators is for storing fluids. That's why HYDAC bases its piston accumulators on this principle.

Indeed, a piston accumulator consists of a fluid section and a gas section with the piston acting as the gas-proof screen. There is a pre-charge of the gas section with nitrogen.

So, the connection of the fluid section to the hydraulic circuit is possible. Therefore, it leads to the piston accumulator drawing in the fluid when the pressure increases and compression of the gas.


  • The optimised production process, saving on material and manufacturing costs
  • Reduced-weight series
  • Reduced installation space
  • Standard gas valve M28x1.5 integrated into end cap (non-refillable version possible)
  • Endurance tested (function and fatigue tests)




Piston Accumulators Series SK280

Please contact the store to confirm stock availability near you