Overview
Compact hydraulic power units are used in many machines where space is limited and the hydraulic circuit must be simple, reliable and easy to service. Common applications include lift platforms, tail lifts, small presses, mobile equipment, material handling systems and industrial auxiliary systems.
Choosing components for a compact power unit usually requires reviewing the equipment function, pressure, flow, voltage, duty cycle, installation space and hydraulic circuit.
Main Components in a Compact Power Unit
A compact power unit may include:
The exact configuration depends on the machine function. For example, a lift application may require pressure holding, lowering control and overload protection, while another system may require directional control or flow adjustment.
- Electric motor
- Hydraulic pump
- Reservoir
- Manifold block
- Cartridge valves
- Solenoid valves
- Solenoid coils
- Relief valve
- Check valve
- Flow control valve
- Pressure control valve
- Filters and accessories
Start with the Equipment Application
The application equipment should be confirmed before selecting components. Useful information includes:
Application information helps review whether the hydraulic components are suitable for the actual working conditions.
- What machine uses the power unit
- What actuator the system controls
- Lifting, lowering, clamping, pressing or steering function
- Indoor or outdoor use
- Duty cycle
- Working environment
- Required quantity and target use
Confirm Pressure and Flow
Pressure and flow are basic selection points for compact power units. Buyers should provide:
If the exact flow rate is not available, pump model, motor power, reservoir size or equipment function may help start the review.
- Working pressure
- Maximum system pressure
- Pump flow
- Required actuator speed
- Relief valve setting
- Flow control requirement
Review Valve and Manifold Requirements
Compact power units often use cartridge valves installed in manifold blocks. Important information includes:
A manifold photo or drawing is very helpful for replacement or sourcing projects.
- Valve function
- Cavity type
- Manifold drawing
- Installation space
- Port arrangement
- Pressure and flow through each valve
- Solenoid voltage and connector type, if applicable
Electrical Information for Coils and Motors
For power units with solenoid valves, coil information should be confirmed:
For the electric motor, buyers may also need to confirm voltage, power, mounting style and operation mode.
- Voltage, such as 12V DC or 24V DC
- Connector type
- Coil size
- Duty cycle
- Control method
Common Missing Information
Many compact power unit inquiries are delayed because the request only includes a product photo without system details. Common missing information includes:
Even if all technical details are not available, photos, existing part numbers and application equipment can help begin the review.
- Equipment application
- Working pressure
- Pump flow
- Voltage
- Manifold drawing
- Valve function
- Installation dimensions
- Quantity and target use
RFQ Checklist
Before requesting quotation for compact power unit components, please send:
- Equipment application
- Existing product photos
- Original part numbers, if available
- Working pressure and required flow
- Voltage and connector details
- Hydraulic schematic or manifold drawing, if available
- Pump or motor information, if relevant
- Installation space or dimensions
- Quantity and target use
Need Help Reviewing Power Unit Components?
Send us your photos, model numbers, hydraulic schematic, application equipment, pressure and flow information. We can review the available information and follow up with specific questions before quotation.