Operation and Structure of Hand Pumps

Hydraulic hand pumps operate by converting manual force into hydraulic pressure. Their construction is relatively simple and usually consists of two main parts: the lever arm and the piston.

When the lever is operated manually, the piston is set in motion, pumping hydraulic oil or other working fluids at high pressure through a hose. Built-in valves control the oil flow, ensuring one-way motion and preventing backflow. The Sunfab suction port supports the introduction of hydraulic fluid into the system.

Thanks to their simple design, hand pumps are highly reliable, rarely fail, and remain effective even under harsh working conditions. They are typically made of steel or aluminum to withstand high pressure and mechanical stress.

Applications of Hydraulic Hand Pumps

Hydraulic hand pumps are widely used due to their versatility, ease of maintenance, and reliability.

• Vehicle repair and maintenance: Mechanics frequently use them to operate jacks and presses.

• Construction and heavy machinery: Commonly used in lifting systems or on-site repairs where no electric power source is available.

• Industrial applications: Ideal for specialized tasks such as operating hydraulic presses or cutting tools.

• Rescue operations: A vital tool for portable hydraulic equipment such as spreaders and lifters firefighters, for example, often rely on them during emergency situations.

Maintenance of Hand Pumps and Common Issues

Maintaining hydraulic hand pumps is relatively straightforward, but regular inspection is essential for long-lasting and efficient operation.

• Oil should be replaced at regular intervals, as dirt and deposits can degrade the pump’s performance.

• Oil level must also be checked frequently to ensure it remains within optimal range.

Worn seals or O-rings can cause leakage, reducing internal pressure and, as a result, system performance. These components should be inspected and replaced as necessary.

Mechanical components such as the lever arm, piston, and valves, while made of durable materials, should also undergo periodic assessment to ensure they remain in good condition.

Since hand pumps are often transported and relocated, it is important to verify the stability and secure mounting of all parts to avoid unexpected issues upon arrival at the worksite.

If you have any further questions regarding hand pumps or any of our other hydraulic products, feel free to contact us through one of our channels.