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Enerpac with new self-locking cube jack

Illustrations of SCJ-50 jack

The Self-Locking Cube Jack offers a new compact and portable hydraulic solution for incremental lifting and lowering of heavy loads. The SCJ-50 Cube Jack uses a base lifting frame and self-aligning, lightweight steel cribbing blocks to provide high-capacity and stabilized lifting – offering a safer, controlled and more efficient alternative to climbing jacks with wooden cribbing.

The SCJ-50 Cube Jack is based on an operating principle similar to our 125-750 ton Jack-Up Systems, but in a vastly smaller footprint and without the need for electrical controls. Up to eleven 16 kg (35-lb.) steel cribbing blocks can be safely and easily stacked onto the compact Cube Jack base frame yielding a maximum height of 2067 mm (81.4 inches). The base frame footprint measures just 500 mm x 428 mm (19.7 in x 16.9 in), making it ideal for portability and restricted operating space. A low 494 mm (19.4 in) minimum initial jacking height increases flexibility and reduces operational startup time.  

The SCJ-50 Cube Jack operates with standard 700 bar (10,000 psi) hydraulic pressure and is compatible with standard Enerpac pumps, such as the Split-Flow Pump that offers the ability to synchronously operate multiple Cube Jacks.

The compact size and portability of the Self-Locking Cube Jack offer a powerful solution for numerous applications, such as equipment maintenance, vehicle unloading or jacking a transformer, module, or bridge.

Capacity per cube jack: 50 tons (500 kN)

Maximum lifting height: 2067 mm (81.4 inches)


  1. End block with tilting saddle
  2. Eye-bolts for hoisting
  3. Forklift tabs
  4. Removable insert table
  5. Cube Jack base frame
  6. Locating pins
  7. Steel cribbing blocks
  8. Adjustable tilting saddle
  9. Flow control
  10. Mode locking pin
  11. Mode selector lever
  12. Hydraulic connections (advance / retract)

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