Hollow Ram Jacks

Our Hollow Ram Jacks are available as single acting with a spring return or double acting and is intended for use with a threaded bar system (i.e. DYWIDAG).

Its hollow plunger allows both pull and push forces, enabling fast ram retraction – making it ideal for hydraulic sliding/ lifting/ lowering of heavy structures or containers.

They have varying cylinder capacities available from 33 – 59 tonnes.


33- 59 tonnes cylinder capacity
Load bearing capacity: 265kN - 576kN
Stroke limit 155mm – 330mm
Can be computer controlled with our advanced Monitoring solutions

About Hollow Ram Jacks

They work in conjunction with our Mass 50 propping system, adopting specially fabricated base plates to ensure concentric connection.

All our Hollow Ram Jacks are tested, certified and calibrated by our in-house hydraulics experts before every hire. If required, our hydraulics team will also install and operate the jacks for your project.

Available to straight hire or as part of a design.

Generally used in a variety of applications:

  • Bridge Jacking
  • Building Refurbishment
  • Lifting/ lowering and sliding
  • Monitoring and control
  • Site Services


View or download here

    • Capacity (kN)


      Stroke (mm)


      Closed height (mm)


      Diameter (mm)


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