Diaphragm is the main components for hydraulic breakers accumulator.
A hydraulic accumulator is a pressure storage reservoir. The diaphragm is filled with gas (nitrogen) and is housed inside a chamber. When this chamber is filled with hydraulic fluid, the gas inside the diaphragm starts to compress. Once at a required pressure, the fluid is released and the gas re-expands, forcing the hammer piston down sharply. This all happens hundreds to thousands of times a minute depending on the size of the hammer.
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