HK OLM A

Diaphragm accumulator, connection A

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Material

type 1: membrane NBR

type 2: membrane ECO

Application

Energy storage

Emergency actuation

Leak oil and volume compensation

Shock absorption and pulsation damping

Suspension of vehicles

Connections

Oil side type A - female thread

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HK OLM 0.075 250 A HK OLM 0.16 250 A HK OLM 0.32 210 A HK OLM 0.5 210 A HK OLM 0.75 210 A HK OLM 0.75 350 A HK OLM 1.0 210 A HK OLM 1.4 140 A HK OLM 1.4 210 A HK OLM 2.0 100 A HK OLM 2.0 250 A HK OLM 2.8 250 A HK OLM 3.5 250 A

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Characteristics

Material

type 1: membrane NBR
type 2: membrane ECO

Application

Energy storage
Emergency actuation
Leak oil and volume compensation
Shock absorption and pulsation damping
Suspension of vehicles

Connections

Oil side type A - female thread

Construction type

installation preferably vertical, gas side top

Temp. range

Type 1: -10 °C to +80 °C
Type 2: -40 °C to +80 °C

Customs tariff number

84798997

All characteristics

Product description

Notes

CE-mark for diaphragm accumulators > 1.0 l gas volume
Working pressure 100 to 350 bar; min. working pressure must be 10% above gas charge pressure
max. gas filling pressure 130 bar

Description

As liquids are practically incompressible, the compressibility of a gas (in this case nitrogen) is used in hydraulic accumulators to store energy.
A hydraulic accumulator consists of two chambers (liquid side and gas side), which are separated by a flexible, gas-tight element. The liquid side is connected to the hydraulic circuit of the system. When the pressure in the system rises, the accumulator is filled with oil and the gas is compressed. If the pressure drops, the stored pressurised liquid is forced back into the circuit by expansion of the compressed gas.

Ordering information

Pressure accumulators are available uncharged ex-warehouse. Additional costs apply upon customer request for N2-charging.