Stratajacks Installed

Welcome to Cougar Stratajacks, the latest development in secondary roof support systems for the mining industry.

The Stratajack

The Stratajack is a cost effective, lightweight, safe, efficient and effective alternative to other standing roof support systems for the underground mining industry.

The Stratajack is a patented ACTIVE standing roof support that provides a minimum 2 tonne of force between the roof and floor on installation, conforming to the roof and floor profile maintaining the strata beam above.

Cougar Grouts

Cougar Grouts have been designed using cellular technology. Using preformed foam we can produce the required Mpa to suit the application requirements. We offer 2 types of grout Hydragrout and BSF1000.

HYDRAGROUT® is a shrinkage compensated expansion grout used within our Stratajack.

BSF1000® is our standard grout used in void filling applications.

Cougar Pumping System

Cougar Stratajacks have designed one of the most efficient and effective pumping systems on the market. The pumping system has a high volume output of 100m3 in 1 x 8 hour pumping period with improvements to double this volume with the series 2 pumping system. Powered by a JUG-A-0 using load sense technology for efficiency. 

Single Axis Roof Simulator (SARS)

Cougar have built the biggest press in the southern hemisphere. The press is designed to test standing roof support capacities for the underground mining industry. The SARS was built with a load mapping and convergence measuring PLC in place to remove all the grey around standing roof support capacities. 

Proactive Seal

Cougar Stratajacks have developed a 20 and 50psi proactive seal, supported by Stratajacks and dry shotcrete form work. The proactive seal utilises the efficiency of the Cougar Stratajacks high volume grout pumping system combined with the effectiveness of Cougar’s HYDRAGROUT product and the active support of the Stratajack to create a proactive seal for the mining industry. With the utilisation of the Stratajack and HYDRAGROUT the seal provides 2 forms of protection against convergence through the active force on the roof and floor provided by the Stratajack and the compaction capabilities of the cellular grout.  


Cougar Proactive Seal Install - Moranbah North

26 Apr 2016 2:26 PM - Proactive Seal Installation

Cougar Stratajacks have successfully installed the proactive seal. The seal has been designed with the inclusion of Cougar Stratajacks active standing support "The Cougar Stratajack" positioned around the seal to limit convergence from taking p...

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Stratajack Installation - Moranbah North

26 Apr 2016 2:07 PM - Moranbah North Install

Cougar Stratajacks have installed 153 Stratajacks into the tailgate at Moranbah North LW111. Working with the Moranbah North secondary support contractors, the Stratajacks were installed successfully and in minimal time.

The installed co...

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Stratajack Installation

4 Dec 2015 3:44 PM - Installing Stratajacks at Oaky North

Cougar Stratajacks have been installed at Oaky North in an effort to stop seal crush caused by roof convergence. As the Stratajack maintains an “active” force between the roof and floor the Stratajack is suited for this application. The Stratajack...

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