You may already know how crucial it is to find the proper hydraulic power pack according to your requirements, especially in terms of where and how you will use it, and how often. Hydraulic power packs come with different sizes and functionalities, after all, and it’s essential to find the proper balance between performance and what you really require when it comes to energy or power. But while there are different factors you have to think about in terms of selecting a hydraulic power pack or unit, you also have to think carefully about its motorisation and size. If you want to make the correct decision in terms of your hydraulic power pack, here’s a look at your choices.
How to choose the proper motor for your unit
Hydraulic power packs will have a motor, and this will drive the unit’s hydraulic pump. The motor is usually a combustion engine or an electric motor, but some units can operate with the use of air.
If you opt for an electric motor, this will be powered either by AC (alternating current) or DC (direct current). A direct current motor is often used in units that you mount on vehicles such as forklifts or commercial vehicles, and they operate with the use of a battery. AC or alternating current motors, on the other hand, are often seen in units used within factories or workshops.
If you don’t have access to electrical sources and are planning to use the unit outdoors, you can opt for a unit that runs on petrol, gas, or diesel. You have a lot of choices with this as well, as these units can cover a broad selection of applications. You can also consider making use of a hydraulic power unit which is air-driven if you have an available pneumatic circuit, and this allows you to get a good pressure ratio. Air-driven units are often useful if you have to operate the unit or pack in an atmosphere that is volatile or explosive.
How to choose the proper size for your unit
You essentially have three main choices in regards to a hydraulic power unit: mini, micro, or standard, as confirmed by hydraulic power pack specialists such as www.hydraproducts.co.uk.
A micro hydraulic power unit often has a max flow rate of about 5 litres per minute and a max pressure of 250 bar, and these units are compact and are designed for mounting on smaller motorised machinery. You will often find these with direct current as well, with a maximum of 800 watts.
A mini hydraulic power unit often has a max flow rate of about 30 litres per minute and a max pressure of up to 350 bar, and you can opt for either a stationary one or one that is mounted on a wheeled frame to make it mobile. These units often have DC motors of about 5.5 kW.
Lastly, a standard unit can have a max flow rate of about 100 litres per minute, with a max pressure of up to 4500 bar on certain units, but most units are limited to operate between only 250 to 700 bar to suit many requirements. You can also make them mobile with the installation of wheels on the chassis, or you can opt for a stationary unit depending on your needs.
Image attributed to Hydraproducts.co.uk