Hydraulic Pumps: The Heart of the System from Hidraulika Store

Why is the Pump the Most Important Element of a Hydraulic System?

The hydraulic pump is the true engine of the system, its "heart," which converts the mechanical, rotational energy of a drive motor (typically an electric motor or internal combustion engine) into hydraulic energy, i.e., flow. This component creates the flow that, upon meeting resistance (e.g., at a cylinder), builds up pressure and thus the force required for work. The "Pumps" category at Hidraulika Store offers a comprehensive solution: you will not only find a wide selection of hydraulic pumps but also all the power transmission accessories necessary for their professional installation.

Hydraulic Pump Types: Which One Should I Choose?

Choosing the right pump depends on the application's needs: the required pressure, flow rate, noise level, and control method. Our selection covers the most common industrial and mobile hydraulic requirements.

Gear Pumps: The Robust Workhorse

Gear pumps are the most common, simplest, and most cost-effective pump type. Two counter-rotating gears transport the fluid from the inlet to the outlet side. They are extremely robust, tolerant of contamination, and handle high speeds well. They are ideal for mobile hydraulics (e.g., agricultural machinery, dump trucks) and simple industrial power units. Their popularity is demonstrated by the fact that one of our best-selling products is a reliable Italian model, the Ronzio 02ZAG11C032DN gear pump, known for its durability and excellent value. Check out our entire gear pump selection to find the 1-circuit or special internal gear model that fits your machine!

Vane Pumps: The Quiet and Efficient Solution

Vane pumps transport oil using vanes that move radially in a rotor. Their main advantages are extremely quiet and low-pulsation operation, as well as high efficiency. Two main types exist:

• Fixed displacement: They provide a constant flow rate.

• Variable displacement: These modern pumps can adjust their flow rate to the system's demands. Pressure-compensated models reduce their flow to zero when the set pressure is reached, while power-compensated types keep the product of pressure and flow constant. Both solutions result in significant energy savings.

Axial Piston Pumps: The High-Pressure Powerhouses

When extremely high pressure (even above 350-400 bar) and high performance are needed, axial piston pumps are the solution. These high-end pumps create flow through the axial movement of pistons and have outstanding efficiency. They are primarily used in heavy construction machinery and high-performance industrial presses.

Hand Pumps: The Manual Safety Reserve

Hand pumps can be operated manually and are essential for service purposes, in emergency systems (e.g., lowering an elevator during a power outage), or for moving low-power cylinders. Our range includes tank-mounted and in-line versions.

The Basics of Professional Installation: Pump Accessories and Power Transmission

A pump does not work on its own; it must be connected to the drive motor. Our "Accessory" category contains hundreds of parts to build a professional, safe, and quiet drive train:

• Bell Housing: This cast component provides the physical connection between the electric motor flange and the pump flange, guaranteeing perfect shaft alignment.

• Coupling: This element transmits the torque from the motor shaft to the pump shaft. We offer complete couplings, as well as separate motor-side and pump-side hubs, allowing you to flexibly pair components.

• Spider Insert: The flexible element (typically polyurethane) located between the two coupling hubs, which dampens vibration and start-up shocks, increasing the life of the drive.

• Parts: You can also find wear parts for pump repair and maintenance, such as seals, shafts, and bearings.

Why Choose a Pump from Hidraulika Store?

We don't just hand you a box. The experts at Hidraulika Store will help you select the entire drive train, from sizing the right pump to pairing it with the perfectly matching bell housing and coupling. Our goal is to provide you with a complete, reliable, and efficient solution. Discover our full range of services and products on the hidraulikastore.com homepage!

Frequently Asked Questions

• How do I know what size pump I need? You need two main data points: the desired flow rate (liters/minute), which determines the speed of the cylinder, and the maximum operating pressure (bar), which is necessary for the force. Based on this data, our experts can help you select the right type and size (cm³/revolution).

• What is the difference between a fixed and a compensated pump? A fixed displacement pump delivers the same amount of oil with every motor revolution. If the system does not need the oil, it is returned to the tank via a relief valve, which generates heat and wastes energy. A pressure-compensated (variable) pump "senses" the pressure, and if it reaches the set value, the pump "compensates," i.e., it reduces or stops the flow. This saves significant energy and reduces oil heating.

• How do I choose the right bell housing and coupling? The type of electric motor (flange size, e.g., B5/100) and the type of pump (flange size, e.g., European "Group 2") determine the size of the bell housing. To select the coupling, you need the motor shaft diameter and the pump shaft type (e.g., tapered 1:8, splined). Ask our colleagues for help with the exact pairing!