What is the efficiency of a gear pump when new, and how does it compare to a piston pump?

The efficiency of a gear pump is typically around 85%, which reflects its ability to convert the input power into hydraulic energy effectively, while experiencing some losses due to internal friction and leakage. Gear pumps have a relatively simple design, which contributes to their efficiency but does not reach the levels usually seen in more complex pumps.

On the other hand, piston pumps can achieve higher efficiencies, often around 95%. This higher efficiency is due to their design, which allows for better sealing and reduced internal leakage compared to gear pumps. Piston pumps are generally employed in applications requiring high pressure and precise control, justifying their greater efficiency.

The choice of 85% for the gear pump and 95% for the piston pump demonstrates the typical efficiencies found in these types of equipment, showcasing the advantages of piston pumps in terms of performance in certain applications. Understanding these efficiencies is important for selecting the appropriate pump type for specific hydraulic applications, indicating the contexts in which each type shines.