The B3S Series EziJac is a modular style hydraulic bolt tensioner featuring a spring return mechanism which automatically resets the tool to its full working stroke. The modular design allows multiple adaptor kits to be interchanged with just the one load cell.
Technofast technologies like the EziJac range of hydraulic bolt tensioners and the EziTite range of hydraulic nuts and bolts and complementary CamNut range are employed globally across Australasia, Asia and North America.
The company says they are particularly valued in applications where avoidance of downtime and reduced maintenance time is critical, including nuclear, hydro, gas and coal electricity generation plants and mining and industrial processing applications.
Recent relocation to the company’s purpose-built factory in the industrial precinct of Crestmead allows streamlining of manufacture and an increase in production to address increasing demand for these innovative fastener systems.
Suitable for whenever accurate and repeatable loading is required across a wide range of industries, the new updated B3S Series EziJac hydraulic bolt tensioner has an innovative new two-piece seal design which offers faster operation of the tensioner due to lower friction.
Technofast founder and CEO John Bucknell said the new seal also improved the longevity of the bolt tensioners, which were capable of well over 1000 cycles before seal replacement is required.
“We have also designed new improved seal retainers, to further enhance the reliability of the bolt tensioners,” he said.
The return force of the return springs of the bolt tensioner has also been increased to further improve efficiency and speed of operation; with a new puller design making them far easier to be operated by workers wearing gloves.
The EziJac hydraulic bolt tensioners use hydraulic pressure to tension the bolt to the exact load required. Once the bolt has been tensioned, the standard nut is wound down the thread to retain the load.
The EziJac is then depressurised, reset to full stroke by the return mechanism, and removed from the application ready to be used again.
The EziJac bolt tensioners offer reduced assembly time for critical jointing applications and where simultaneous tensioning of bolts is required, such as flanges where even gasket compression is required.
As well as being ideal for confined and difficult nut locations, the B3S EziJacs require little physical effort to operate and are ideal where rotational or torsional stresses are a problem, and where regular maintenance requires repeated adjustments or removal of nuts.