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Stanley HP28 Hydraulic Power Unit

The HP28 (TWIN8) twin circuit hydraulic power unit offers a revolutionary design capable of operating two tools at 8 gpm simultaneously. For the first time running two hydraulic tools at full 8 gpm capacity is a reality, increasing productivity and versatility like never before. Experience how the HP28 will change the way hydraulic tools are used and JOIN THE REVOLUTION! Each of the two circuits is optimized to deliver ideal flows and pressures to both Type 1 and Type 2 hydraulic tools.

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STANLEY Hydraulic Power Unit HP28

  • ATM Technology: Active Thermal Management (ATM) optimizes performance in extreme weather conditions. By managing oil temperatures, preheat time is decreased and tool runtime increases.
  • Side Handles: New side handles improve ease of lifting the unit while adding side impact protection and with no moving parts to wear or corrode.
  • Solid Tires: Eliminates the need to refill flat tires and decreases pull force needed for maneuvering.
  • Tough Grip Multi Position Handle: Special Tough Grip handle surface improves comfort and control with increased durability.
  • Lifting Hook


Spec Sheet

User Manual


Additional information

Weight 360 lbs
Dimensions 37.5 × 25.75 × 30 in
Output Capacity

2 each 5 or 8 gpm / 20 or 30 lpm


2000 psi/ 140 bar

Circuit Type

Open Center

Hydraulic Reservoir Capacity

3.2 Gallons/ 12.1 Liters


HTMA Flush Face

Fuel Tank Capacity

4.7 Gallons/ 17.8 Liters


Briggs & Stratton 27 hp Vanguard OHV




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