Enerpac hydraulic pumps provide the hydraulic power needed to operate cylinders, presses, pullers, torque wrenches and other high-pressure hydraulic tools. The right pump depends on more than pressure alone. Power source, oil flow, reservoir capacity, valve configuration and the type of tool being operated all affect which pump is the best fit.
BuyEnerpac.com carries Enerpac hydraulic pumps in hand-operated, electric, air-powered, cordless battery and gasoline-powered configurations. Use the categories below to narrow the selection by power source, then compare the specifications of individual models to match the pump to your hydraulic system.
Shop Enerpac Hydraulic Pumps by Power Source
Enerpac Hand Pumps
Enerpac hand pumps provide portable hydraulic power without electricity, compressed air or an engine. They are commonly used with hydraulic cylinders and tools where portability, simple operation and precise manual control are important.
The range includes single-speed and two-speed designs along with different reservoir capacities, materials and pressure ratings. Two-speed models provide higher flow during initial cylinder advancement before transitioning to lower flow as system pressure increases.
Enerpac Electric Hydraulic Pumps
Enerpac electric hydraulic pumps are available in multiple flow groups, reservoir sizes, voltages and valve configurations. They are well suited to applications where electric power is available and repeatable powered operation is preferred over manual pumping.
Electric pump selection should account for required oil flow, motor voltage, reservoir capacity, valve type and whether the pump will operate a single-acting cylinder, double-acting cylinder or specialized hydraulic tool.
Enerpac Air Hydraulic Pumps
Enerpac air hydraulic pumps convert compressed-air power into hydraulic pressure. They are useful in facilities and work areas where compressed air is readily available or where an electrically powered pump is not the preferred option.
Enerpac air pump families include compact pumps for general hydraulic-tool operation as well as larger air-driven pumps and models designed for specific industrial applications. Compare required air supply, hydraulic output, reservoir size, valve configuration and control method when selecting a model.
Enerpac Battery Powered Hydraulic Pumps
Enerpac battery powered hydraulic pumps provide cordless hydraulic power for field work, service applications and locations where access to an electrical outlet or compressed-air source is limited.
Battery pump options include compact models for portable hydraulic work and higher-capacity cordless configurations. Compare reservoir capacity, valve configuration, control type and whether batteries and a charger are included with the selected model.
Enerpac Gas Powered Hydraulic Pumps
Enerpac gas powered hydraulic pumps provide self-contained powered hydraulic operation for field and mobile applications. These gasoline-powered pumps are useful when the job requires powered hydraulic flow but electrical power and compressed air are not conveniently available.
Available ZG Series configurations include models with different usable oil capacities, valve arrangements and hydraulic flow rates for both single-acting and double-acting cylinder applications.
How to Choose an Enerpac Hydraulic Pump
Choosing an Enerpac hydraulic pump starts with the tool or cylinder the pump will operate. Once compatibility is established, compare the required operating pressure, oil volume, flow rate, valve configuration and available power source.
Operating Pressure
Maximum operating pressure varies by pump family and application. Many Enerpac hydraulic tool pumps are designed for operation up to 10,000 psi, while specialized pump systems can operate at other pressures. Enerpac tensioner pumps, for example, include models designed for pressures up to 21,750 psi.
Do not select a pump based only on the highest pressure number. The pump, hose, couplers, valves and hydraulic tool must be rated and configured for the intended system.
Hydraulic Oil Flow
Oil flow affects how quickly a cylinder advances or a hydraulic tool cycles. Higher flow generally provides faster movement when the application can use the additional oil volume.
Flow can also change as hydraulic pressure rises. For that reason, compare the manufacturer's flow specifications at the pressures relevant to the application rather than relying on a single unrestricted-flow number.
Reservoir and Usable Oil Capacity
The pump reservoir must contain enough usable hydraulic oil to operate the connected cylinder or tool through its required stroke or cycle. Larger or multiple cylinders typically require more oil volume than compact hydraulic tools.
When comparing Enerpac pumps, pay attention to usable oil capacity, not just the physical size of the reservoir. The amount of oil available to the hydraulic circuit is the more useful specification when matching a pump to a cylinder or tool.
Valve Configuration
The valve determines how hydraulic oil is directed between the pump and the connected equipment. Enerpac pumps are available with different manual, solenoid and application-specific valve configurations.
The correct valve depends on the hydraulic circuit and whether the connected equipment requires advance, hold, retract or another operating sequence. Always verify the valve configuration of the individual pump before matching it to a tool or cylinder.
Single-Acting and Double-Acting Hydraulic Systems
One of the most important compatibility checks is whether the pump will operate a single-acting or double-acting hydraulic cylinder.
Single-acting cylinders use hydraulic pressure to move the piston in one direction. Return movement is accomplished by a spring, gravity, load or another external force depending on the cylinder design.
Double-acting cylinders use hydraulic pressure for controlled movement in both directions. These systems require a pump and directional valve configured to direct oil to both sides of the cylinder.
Some Enerpac pump families are available in multiple valve configurations, so two pumps from the same series may be intended for different cylinder types. Check the individual model specifications rather than assuming all pumps within a series have the same hydraulic circuit.
Single-Speed vs. Two-Speed Hydraulic Pumps
Single-speed pumps deliver hydraulic oil through one pumping stage. They can be a practical choice where simplicity and controlled operation are more important than rapid cylinder advancement.
Two-speed pumps are designed to move more oil during the low-pressure portion of the cycle and transition to lower flow as pressure increases. This can reduce the amount of pumping time required to advance a cylinder before the load is reached.
Both designs have appropriate applications. The better choice depends on required flow, pressure, cylinder size and how frequently the hydraulic system will be operated.
Hydraulic Torque Wrench Pumps
Enerpac hydraulic torque wrench pumps are designed specifically to power hydraulic torque wrenches in controlled bolting applications. The range includes electric, air-powered and cordless configurations, with options from the LU, TQ-700, ZU4, ZE, ZA4, LAT and XC2T pump families.
For electric bolting applications, compare the Enerpac TQ-700 Series torque wrench pumps and Enerpac LU Series electric torque wrench pumps. Selected ZU4 and ZE electric pumps are also configured specifically for hydraulic torque-wrench service.
Air-powered torque-wrench pumps are available in ZA4 and LAT configurations, while XC2T cordless pumps provide battery-powered operation where an electrical cord or compressed-air supply is not practical.
Torque wrench pumps should not be confused with hydraulic bolt tensioning pumps. The two applications use different equipment and may operate at significantly different hydraulic pressures.
Hydraulic Bolt Tensioning Pumps
Hydraulic bolt tensioning is a specialized bolting application that can require pressures above the standard 10,000 psi used by many hydraulic tools. Enerpac manufactures dedicated tensioner pumps for these higher-pressure systems.
See the Enerpac ZUTP Series electric tensioning pumps for pumps designed specifically for hydraulic bolt tensioner applications.
Matching the Pump to the Application
There is no single Enerpac hydraulic pump that is the best choice for every application. A compact hand pump may be the right solution for occasional cylinder operation in the field, while a powered electric pump may make more sense for frequent cycling in a shop or production environment. Air, battery and gasoline models solve different power and portability requirements.
Before selecting a pump, confirm:
- Maximum required hydraulic pressure
- Required oil flow
- Usable oil capacity
- Single-acting or double-acting compatibility
- Valve configuration and function
- Available electric, air, battery or engine power source
- Control requirements
- Duty cycle and frequency of use
- Compatibility with the connected cylinder or hydraulic tool
Comparing these specifications first is usually the fastest way to narrow a large pump selection to the models that actually fit the hydraulic system.
Hydraulic Pump Hoses, Fittings and Accessories
A complete hydraulic system also requires properly rated connections between the pump and tool. BuyEnerpac.com carries Enerpac hydraulic hoses, hydraulic fittings, couplers and other components used to connect and maintain hydraulic systems.
Replacement components and service items are also available in our Enerpac parts selection. Always confirm pressure rating and compatibility before connecting hoses, couplers, fittings or accessories to a hydraulic pump.
Enerpac Hydraulic Pump FAQs
What types of hydraulic pumps does Enerpac offer?
Enerpac manufactures hydraulic pumps powered manually and by electricity, compressed air, batteries and engines. Different pump families are designed for applications ranging from general cylinder and tool operation to hydraulic torque wrenching, controlled lifting and hydraulic bolt tensioning.
Are all Enerpac hydraulic pumps rated for 10,000 psi?
No. Many Enerpac hydraulic tool pumps have a maximum operating pressure of 10,000 psi, but pressure ratings vary by series and application. Specialized pumps, including certain hydraulic bolt tensioning pumps and torque-wrench configurations, may operate at different maximum pressures.
How do I choose the right Enerpac hydraulic pump?
Start with the cylinder or hydraulic tool being powered. Then compare the required pressure, oil flow, usable oil capacity, valve configuration, cylinder or tool compatibility, power source and control requirements. Those specifications will usually narrow the selection considerably.
Do I need a different pump for a double-acting cylinder?
A double-acting cylinder requires a hydraulic circuit that can apply pressure in both directions. The pump and valve therefore need to be configured for double-acting cylinder operation. Do not assume that every pump within a particular series supports both single-acting and double-acting cylinders.
What is the advantage of a two-speed hydraulic pump?
A two-speed hydraulic pump provides higher oil flow during the low-pressure portion of the cycle, allowing faster cylinder advancement before the load is reached. The pump then operates at lower flow as system pressure increases.
Should I choose reservoir capacity or usable oil capacity?
Usable oil capacity is the more important specification when determining whether a pump contains enough hydraulic oil to operate a cylinder or tool. Compare the required oil volume of the connected equipment with the pump's usable oil capacity.
Which Enerpac pump is best for field use?
That depends on what power is available at the jobsite and which hydraulic tool must be operated. Hand pumps require no external power source. Battery pumps provide cordless powered operation. Gasoline pumps provide self-contained engine-driven hydraulic power, while air pumps can be practical where a suitable compressed-air supply is available.
What pump should I use with an Enerpac hydraulic torque wrench?
Use a pump specifically configured for hydraulic torque-wrench operation rather than assuming any 10,000 psi hydraulic pump is suitable. Browse Enerpac hydraulic torque wrench pumps to compare electric, air-powered and cordless options designed for hydraulic bolting applications.
