Hydraulic Pumps Company

Hydraulic Pumps convert mechanical energy and motion into hydraulic fluid power. The main idea is very simple: just need to force that is applied at one position is transmitted to another position using an incompressible fluid such as oil that cannot be compressed but displaced when pressure is applied.

A reservoir, a pump and a hydraulic cylinder make up the three main parts of a hydraulic pump. Pumping hydraulic fluid from the reservoir into the bottom cavity of the cylinder may cause the piston rod to be pushed up that pushes the fluid in other cavity back into the reservoir. This procedure then pressurizes the chamber and extends the piston to its full length. Pumping hydraulic fluid to the upper chamber of the cylinder pushes the piston rod down and pushing the oil in the other chamber back towards the reservoir to complete the cycle.

Popular Types of Hydraulic Pump:

• Vane pumps, gear pumps and piston pumps are the foremost types of hydraulic pumps.
• Gear Pumps: Uses gears to pump fluid by displacement. Hydraulic gear pumps are one of the most common types of pumps which have several advantages and disadvantages including advantages of high speed, quiet operation, high pressure and the disadvantages of use of four bushings in the liquid area and fixed end clearances.
• Axial Piston Pumps: These are positive displacement and you could find several pistons in a circular arrangement in a cylinder block.
• Screw Pumps: Another Positive Displacement Pump which has one or more screws that rotate to transfer high or low viscosity fluids along an axis.
• Radial Piston Pumps: This is a circular arrangement of hydraulic pistons and valves which will allow pressures greater than 650bar to be built.
• Rotary Vane Pumps: They include a ring mounted inside a cylindrical case. There are number of radial slots in which sliding vanes are located. Mounted to the case is the ring and the vanes are designed to press against the inside wall of the case. Hydraulic pressure or centrifugal force or spring force as the ring is rotated will cause the vane to be forced against the wall.

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