A hydraulic power unit (hpu) is also commonly known by hydraulic power pack. they are generally mixed with hydraulic pumping unit , hydraulic unit or hydraulic station(the definition as below). ZONDAR hydraulic power unit is a self-contained system designed to generate, control, and deliver hydraulic power to drive portable hydraulic tools as handheld hydraulic breaker, hydraulic cutter and slurry pump.
Hydraulic power unit-it is the most widely used alternative, especially in mobile or compact systems, mainly used in outdoor works and special working conditions like emergency response, municipal maintenance, and firefight rescue works.
Hydraulic pumping unit-sometimes used to emphasize the pump-driven nature of the system.
Hydraulic unit – a general term that refers to the entire system.
Hydraulic station – often used in industrial or centralized systems where one unit powers multiple machines.
How Does ZONDAR Hydraulic Power Unit Work?
ZONDAR hydraulic power units are primarily composed of a gasoline/diesel engine, hydraulic oil pump, base frame, and oil tank. It works by using a motor to power a hydraulic pump, which pressurizes hydraulic fluid (usually oil). This pressurized fluid is then directed through valves and hoses to hydraulic actuators like cylinders or motors, creating motion or force.

What Are Categories of ZONDAR Hydraulic Power Pack?
ZONDAR portable hydraulic power pack can be categorized by the type of motor :
Gasoline hydraulic power units: suitable for outdoor and mobile applications, where electrical power may not be available. Gasoline-powered hydraulic power units are typically compact and well-suited for applications where weight and portability are important. They start quickly and operate with relatively low noise, making them ideal for powering small equipment.
Diesel hydraulic power units: designed for heavy-duty, continuous outdoor use with strong torque and fuel efficiency. Diesel-powered hydraulic power units are favored for their fuel efficiency and extended operating time. They are commonly used with large machinery or in long-duration operations, offering higher torque and greater power output.
These power sources determine the unit’s mobility, energy efficiency, and suitability for specific environments.
By hydraulic circuits set up:
Single-circuit hydraulic system has only one hydraulic circuit and can power one hydraulic actuator.
Dual-circuit hydraulic system features two independent circuits, allowing it to operate two different hydraulic actuators at the same time.
This flexibility makes HPUs adaptable to a variety of job site needs.
By power levels, including 9HP, 13HP, 16HP, 18HP, 23HP, 25HP, 27HP, 30HP, 35HP, and 40HP. Each suited for different applications:
9HP to 18HP: these lower power levels are typically used with compact hydraulic equipment such as small presses and lifts. They are ideal for light hydraulic tools like slurry pumps, breakers, cutters, chainsaws, and drills.
23HP to 30HP: suitable for heavy-duty machinery, this power range can drive two hydraulic tools like concrete cutters and breakers same time.
35HP and 40HP : designed for large-scale equipment, it provides robust hydraulic support for high power level tools like submersible pumps, and other tools need large power.

What’s the Advantages of ZONDAR Hydraulic Power Units?
Simple pperation: hydraulic oil is supplied to one or more circuits, easily connecting to high-power, high-flow tools.
Low maintenance: using a vertical-shaft twin-cylinder gasoline engine, these units offer high stability and minimal upkeep.
Reliable performance: equipped with high-capacity hydraulic oil radiators with fan cooling, they operate for long hours without overheating or requiring antifreeze.
Compact and Portable: designed with foldable handles and wheels, the units are small and lightweight: two people can easily lift them and place them onto a truck or trailer.
High power density: compact units deliver significant power.
Precision control: accurate motion and force control.
Reliability: robust systems suitable for harsh environments.
Versatility: customizable to fit different applications and requirements.
Applications of ZONDAR Hydraulic Power Units
1. Road and Bridge Construction
ZONDAR HPUs are used to power hydraulic breakers, concrete cutters, and core drills, enabling efficient demolition, cutting, and drilling during infrastructure projects.
2. Municipal and Emergency Rescue
Compact and easy to transport, ZONDAR hydraulic units support rescue tools like hydraulic spreaders and cutters in fire and disaster response scenarios, where speed and reliability are critical.
3. Mining and Tunneling
They power tools for rock drilling, splitting, and dust suppression in underground operations, where ruggedness and continuous power are required.
4. Rail Maintenance
ZONDAR HPUs are commonly used in rail track repair and maintenance, powering hydraulic wrenches, rail cutters, and tampers.
5. Construction Machinery
Often paired with hand-held hydraulic tools like tampers, post drivers, or power washers for on-site flexibility without relying on large-scale power systems.
Write at the Bottom
Hydraulic power units vary by motor type, circuit design, and portability, but all serve the same purpose—delivering reliable, pressurized power to hydraulic tools. Whether you need a portable gasoline unit for remote sites or a powerful dual-circuit system for demanding applications, understanding these differences will help you choose the right equipment for the job.