HEU Hydraulic Expansion Unit

DYNASET HEU Hydraulic Expansion Unit uses the hydraulic power of mobile machinery for rock bolt expansion. It is a compact easy to install unit to provide bolt expansion for bolters and other mining and tunneling machinery. HEU can be used for manual or fully automatic bolting. HEU is easy and fast to use. It automatically monitors the expansion and provides reliable expansion of the bolt.

Base machines and installation

HEU can be installed on to any drilling machine. It is compact, easy to install. Only hydraulic pressure, return lines and water supply are need to be attached. The expansion head is available either for manual pistol use or as an attachment on to the bolter.

How does the DYNASET HEU Hydraulic Expansion Unit work?

HEU Hydraulic Expansion unit uses base machine’s hydraulic system. When the hydraulic oil flow is turned on the unit is ready to operate and the expansion can be started. The HEU unit monitors the expansion and releases the bolt automatically when correct pressure level is reached.


HEU enables rock bolt usage for large variety of mining machinery. With the compact design, it fits even into the smallest machines. HEU unit can be installed for manual, hand operated, use or for automatic operation. It is reliable, fast and easy to use.

Clean technology

HEU Hydraulic Expansion Unit is eco-friendly. It works in all mining and tunneling machine’s hydraulic systems with zero emissions.

HEU Hydraulic Expansion Unit

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For more information on this product please call us on NSW (02) 4271 2999 or QLD (07) 4952 3612 or fill out the form below and we will get back to you.