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Excavator accumulator

• Brand : هایداک HYDAC
• Made in : آلمان
• Machinery : TADANO, KATO

The accumulator in heavy-duty cranes is typically manufactured in capacities of 6, 10, 20, and 32 liters, with the ability to withstand working pressures up to 350 bar. It is widely used in the hydraulic systems of cranes such as Liebherr 200–1200 tons lifting capacity and Tadano 100–600 tons. The primary role of the accumulator is to absorb hydraulic shocks, store compressed energy, and provide instant pressure for precise boom movements.

In mobile and all-terrain cranes, the accumulator is essential to prevent pressure drops during repetitive lifting cycles. For example, in a Grove 400-ton crane, a 20-liter accumulator operating at 300 bar can supply the necessary energy to safely move the boom in case of a temporary pump shutdown. This function not only enhances safety but also reduces wear on hydraulic pumps, thereby extending their service life.

Reputable manufacturers such as Hydac Germany, Parker USA, and Olaer France supply bladder- and piston-type accumulators specifically for heavy lifting equipment. Typically, the nitrogen pre-charge pressure is set between 0.9 and 1.0 times the system’s working pressure. Compliance with international standards like ISO 4413 and DIN 4807 during installation and maintenance ensures up to 10 years of service life and improves crane efficiency in construction and industrial projects.
WEBSITE: Excavator accumulator Iran