PSVD2 - 13E: The nominal displacement is 13 cubic centimeters per revolution (cm³/rev). This relatively small displacement is suitable for powering the hydraulic systems of mini - excavators with lower flow requirements, providing precise control over the movement of the excavator's boom, arm, and bucket.
PSVD2 - 21E: Has a nominal displacement of 21 cm³/rev. This model offers a higher flow rate compared to the PSVD2 - 13E, which is beneficial for mini - excavators that require more power to handle heavier loads or perform more demanding tasks.
PSVD2 - 27E: The largest of the three models, with a nominal displacement of 27 cm³/rev. It provides the highest flow rate, enabling the mini - excavator to operate with greater force and speed, making it suitable for larger - sized mini - excavators or those used in more strenuous working conditions.