- Published: Wednesday, 28 March 2007 12:10
A more elementary but possibly equally effective means of avoiding screen mechanical breakdown was recently introduced to the market. The HydraNut system, which allows precise tightening of critical bolts in often hard-to-reach machine locations, allows users to secure nuts using hydraulic force axially and evenly without torsion, precisely stretching bolts with the degree of force needed for fastening in different applications and ensuring that components won't shake apart from improper fastener tension. Loosening the nuts requires only repressurizing the HydraNuts, releasing their lock rings and then releasing their hydraulic tension. The system is described as requiring only minutes to apply correct tension to any size bolt. In the field, HydraNuts are screwed into position on the bolt, a quick-connect coupling is made and a hydraulic pump applies pressure. The bolt is stretched and the lock ring is wound down to seat on the top face of the piston. The hydraulic pressure is released and the hose is disconnected. The system is said to reduce tensioning cycle time by 80% and minimize bolt failures.