The core function of the boom cylinder is to generate and control the movement of the excavator's boom arm. It converts hydraulic energy from the machine's pumps into powerful linear mechanical force.
Lifting the Boom: The cylinder extends (pushes) to raise the entire front attachment (boom, stick, and bucket) off the ground. This is essential for tasks like reaching over obstacles, loading trucks, and positioning the machine for a new digging cycle.
Lowering the Boom: The cylinder retracts (pulls) to lower the boom in a controlled manner. This allows the operator to position the bucket for digging or to set a load down gently and precisely.
This 353-9616 boom cylinder is used for 390D 390F excavator.
EXCAVATOR
385C L
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