Original bladder accumulator, part number 1455-26-04000

Original bladder accumulator part number 1455-26-04000

The bulldozer bladder accumulator is a key component in the hydraulic system. It stores energy by compressing nitrogen to compensate for flow fluctuations, absorb shock pressure, and provide emergency power in case of pump failure.

Blouse: Flexible rubber material, isolating hydraulic oil from nitrogen.

Shell: High-pressure seamless steel pipe, requiring rust prevention treatment.

Inflation valve: Pre-charge nitrogen pressure (typically 60%-80% of the system operating pressure).

When the system pressure increases, the hydraulic oil compresses the bladder to store energy; when the pressure decreases, the bladder expands to release the oil. This device is commonly used in bulldozers such as the SD34-G to maintain pilot system pressure.