Pump Supplies – All about Hydraulic Pumps

Pump Supplies – All about Hydraulic Pumps

A hydraulic pump is a device that uses pressurized fluid to perform work. The fluid is usually a liquid, such as oil, water, or hydraulic fluid. The pressurized fluid is supplied by a hydraulic pump, which is powered by an engine or electric motor. So when you need to find pump supplies, you should know all about hydraulic pumps first.

What Are Hydraulic Pump Components?

Hydraulic pump components are essential to the proper function of a hydraulic system. They include the pump, motor, valves, and hoses. Let’s discuss the most common components:

Pump Housing Or Casing:

A pump housing or casing is the component of a hydraulic pump that encloses the pumping elements. The housing transmits the fluid flow from the inlet to the outlet and supports the pumping elements.

Impeller Blades:

The impeller blades are the components of hydraulic pumps that are responsible for pumping the fluid. They are typically made of cast iron, stainless steel, or other corrosion-resistant materials. The impeller blades play a critical role in the operation of the pump and must be designed and manufactured to very precise specifications.

Pump Shaft:

A pump shaft is a rotating component of a hydraulic pump. It is a cylindrical rod that extends from the motor end of the pump to the gear end. The pump shaft transfers power from the motor to the gears, which in turn rotate the impeller. The impeller creates suction and pressure that moves the fluid through the pump.

Bearing Assembly:

The bearing assembly is the component of a hydraulic pump that is used to support the shaft and reduce the friction between rotating and stationary parts. The bearings are usually made of steel, brass, or bronze, and they can be either ball bearings or roller bearings. Some bearings also have cages that keep the balls or rollers in place.


Sealings are the components of hydraulic pumps that prevent fluid leakage. They are made of elastomeric materials and are subjected to a great deal of wear and tear. The two main types of sealings are rotary and static. Rotary sealings are used in pumps that rotate, while static sealings are used in pumps that do not rotate.

Four Types Of Hydraulic Pumps:

Reciprocating Hydraulic Pump:

A reciprocating hydraulic pump is a positive displacement pump that uses pistons to move hydraulic fluid, or liquid, from one chamber to another. The reciprocating motion of the pistons creates a pumping action that forces the liquid to move through the system.

Rotary Hydraulic Pump:

A rotary hydraulic pump is a hydraulic pump that uses a rotating impeller to create flow. The fluid enters the pump around the impeller and is forced into the centre of the impeller by the rotation. This high-pressure fluid then exits the pump and drives the hydraulic motor, which in turn powers the machine.

Screw Hydraulic Pump:

A screw hydraulic pump is a type of positive displacement pump that uses a screw mechanism to move fluid. The pump consists of a cylindrical housing with an inlet and outlet and a screw that moves inside the housing. As the screw turns, it creates a progressive cavity that draws fluid in and compresses it. The compressed fluid is then forced out of the outlet.

Piston Hydraulic Pump:

Piston hydraulic pumps are a type of pump that use pistons to move hydraulic fluid. They are used in a variety of applications, including construction, agriculture, and manufacturing. Piston hydraulic pumps are often used as a replacement for gear and vane pumps because they are more efficient and can handle higher pressures.

A vane pump is a positive displacement pump that uses a rotor with a number of vanes to move liquid. The vanes are inserted into the liquid to be pumped, and the rotor is turned, moving the vanes and the liquid with them. This type of pump is often used to move thick liquids or slurries.

Author: Flavia