29553478 Accumulator Assembly Allison spare parts

29553478 Accumulator Assembly

The 29553478 uses a high-quality alloy steel precision-cast shell, paired with a high-toughness fluororubber bladder. Through CNC precision machining, high-temperature aging treatment, and airtightness testing, it possesses both the high strength and impact resistance of alloy steel and the oil resistance and anti-aging properties of fluororubber. Its internal gas-liquid isolation structure prevents gas from dissolving in the oil, ensuring stable energy storage efficiency. It can adapt to complex working environments with high temperature, high pressure, and multiple media, avoiding potential faults such as hydraulic system pressure fluctuations and insufficient emergency power caused by accumulator failure. It acts as an “energy buffer” and “emergency power source” for the hydraulic system, precisely regulating the storage and release of hydraulic energy. It is compatible with various hydraulic systems, offering wider applicability, and meets the core requirements of modern industry for accumulators to be “highly efficient, stable, and long-lasting.”

Core technical parameters:

-Product Model: 29553478
– Material specifications: Main body (alloy steel, tensile strength ≥520MPa), bladder (fluororubber, oil and temperature resistant), sealing structure adopts a dual structure design of PTFE main seal + nitrile rubber auxiliary seal.
Operating temperature: -20℃~80℃
– Operating pressure: Nominal pressure 10~20MPa, maximum withstand pressure ≤22MPa, strength test pressure ≥33MPa, sealing test pressure ≥22MPa, pre-charge nitrogen pressure is 60%-80% of the system’s minimum operating pressure.
– Structural strength: Compressive strength ≥ 250 MPa, impact strength ≥ 20 J/cm²
– Dimensional accuracy: Outer diameter 140mm × Length 280mm × Volume 10L (precisely matches original factory installation dimensions, tolerance ≤ ±0.04mm), oil port uses flange connection, pipeline diameter matches oil port diameter, installation interface is completely consistent with the original factory.
– Compatible Models/Scenarios: Compatible with heavy machinery (such as Caterpillar bulldozers, mining equipment, excavators), commercial vehicle hydraulic systems, petrochemical hydraulic equipment, hydraulic presses, generator sets, steam turbine EH oil systems, etc. It is compatible with various specifications of hydraulic control systems and is suitable for energy storage, impact absorption, and pressure compensation scenarios using mineral oil, phosphate ester fire-resistant oil, and other media. It can directly replace the original factory corresponding model accumulator assembly.
– Service life: Under normal working conditions, the service life can reach more than 25,000 hours, and the circulatory life of the bladder is ≥500,000 cycles.

The accumulator assembly 29553478, with its precise original equipment manufacturer (OEM) compatibility, excellent energy storage and sealing performance, and long service life, has become a core preferred component for hydraulic system repair and equipment maintenance. We strictly control the production process; each product undergoes rigorous dimensional inspection, pressure testing, sealing performance testing, and material composition testing to ensure compliance with OEM standards, EN 14359 international standards, and industrial usage requirements. We also provide comprehensive after-sales support to resolve various issues customers encounter during procurement and use, contributing to the stable and efficient operation of equipment hydraulic systems.

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