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Bladder-Type Accumulators


Hydro-pneumatic bladder-type accumulator

The HAB design is a hydro-pneumatic type accumulator with compressed nitrogen separated from hydraulic fluid by means of an elastomeric bladder. The current generation of bladder accumulators from Bosch Rexroth carries the HAB-6X and HAB-7X designations. The HAB product line is available in many different configurations needed to meet the stringent demands of today’s market.


  • Hydraulic accumulator according to ASME Section VIII pressure vessel code
  • CRN certificate possible (not all sizes, consult factory)
  • Bladder materials for different applications
  • Two piece gas valve design on 2.5 gallon and larger units for improved serviceability


  • Energy storage in systems with intermittent operation
  • Energy reserve for emergencies
  • Compensation for leakage losses
  • Impact and vibration dampening
  • Compensation of flow in the case of changes in pressure and temperature

“-CRN”: Units have a Canadian Registration Number stamped into the shell indicating certification to Canadian pressure vessel regulations. The units also have the standard ASME certification & stamping.


GoTo product focused delivery times are available only for the quantities and if applicable, the preferred options listed for the product. Order spikes can cause temporary extended lead times. If your need is critical please contact the factory for confirmed delivery times.