In today's marketplace, there's a hydraulic pump for almost any hydraulic application. But with so many factors to consider, choosing a pump for the first time can be a little challenging.
Identifying your intended applications will help you narrow down the possible options. First, you need to understand the basics as well as the capabilities of the hydraulic pumps.
Below are the most common types of hydraulic pumps available in the market now.
Manual (Hand / Foot Operated)
Hydraulic Pump Power Sources
One of the key factor in choosing the right power source for the hydraulic tools will depend on the operational environment. For example, if one is working in a hazardous area, a safety rated explosion proof hydraulic pump such as Enerpac’s ZA-Series Air Hydraulic Pumps will be the ideal choice due to its ATEX Certification. The same can be said for remote working where electricity or compressed air sources may not be readily available. In such a situation, the Enerpac XC-Series Battery Cordless Hydraulic Pump will be best suited. Last but not least, Manual Hand / Foot Pumps such as Enerpac’s P-Series are convenient for small jobs.
Hydraulic Pumps For Cylinders, Pullers, Flange Spreaders and Other Hydraulic Tools
When consider what pump to use for such products, it is important to look at the types of cylinders or tools been used. Typically there are two types of pumps: single-acting or double-acting. If your cylinder is a double-acting model, you’d need to select the corresponding double acting pump where there are two ports for the advance line and return line hoses. The single-acting cylinder will only require a single acting pump with one port for the advance line hose.
Hydraulic Pumps For Hydraulic Torque Wrenches and Tensioner Pumps
Pumps for Hydraulic Torque Wrenches and Bolt Tensioners will require the use of pumps that are specifically designed for these products. Such pumps are available in various power modes; Battery Powered, Electric Powered or Air Driven. For certain harsh environments, a roll cage is available for some pump models to ensure that the pump is protected against falls or knocks.
Compressed air or electricity are used to power these kinds of fixed bench application hydraulic pumps. Pumps powered by air are ideally suited for low or medium duty cycles in workshops. Pumps powered by electricity are recommended for applications with a high duty cycle and automation. Offering great versatility, low noise, and the highest level of performance and durability, these products are the best choice.
Controlled Pumps for Multi-Point Synchronized Lifting
A controlled lifting pump is a superior solution than independently operated pumps for multi-point lifts. To move large objects with high precision, the multiple lifting points must be synchronized. This can be achieved by the use of specialised controlled lifting pumps that offer synchronized multiple outlets that can be operated with a joystick or pendant. More sophisticated models such as Enerpac’s EVO Synchronous Lifting System use stroke sensors.
Performance and Function Considerations
There are other performance and function considerations when it comes to the selection of hydraulic pumps. Some of the following factors to consider are listed below
What is the application? – Lifting, Torque, Tension, Workholding
What type of power source is available on site?
What is the oil flow required?
What is the duty cycle – intermittent or extended?
What is the required usable oil capacity? (This is dependent on the number of cylinders and if they are double-acting)
What is the voltage available on-site?
What is the required control type: manual or pendant op
Is multi-point synchronised lifting needed?
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