The KYB PSVD2-21E-16 is a specific model of hydraulic piston pump manufactured by KYB, commonly used as an excavator main pump. KYB is a well-known manufacturer of hydraulic components and systems for various industries, including construction and heavy equipment.

The PSVD2-21E-16 is a variable displacement piston pump designed to provide hydraulic power and control for excavator functions. It is known for its durability, efficiency, and reliable performance.

Here are some key specifications and features of the KYB PSVD2-21E-16 hydraulic piston pump:

Model: PSVD2-21E-16
Displacement: The displacement of the pump is 21 cc/rev (cubic centimeters per revolution). Displacement refers to the volume of hydraulic fluid displaced by the pump in one revolution.
Variable Displacement: The PSVD2-21E-16 is a variable displacement pump, meaning its displacement can be adjusted to control the flow rate and pressure output according to the requirements of the excavator.
Main Pump: The PSVD2-21E-16 is commonly used as the main pump in various excavator models, providing hydraulic power for the machine's main functions such as arm, boom, and bucket movements.
High Efficiency: The pump is designed for high efficiency to optimize hydraulic system performance and reduce fuel consumption.