Other technologies


Multi-jackbolt tensioners

4th Quarter 2013 Other technologies

BMG’s new Superbolt, which forms part of the Nord-Lock range, is designed to reduce downtime and eliminate unsafe and laborious bolting methods for pumps and pumping equipment, particularly in harsh operating conditions.

The primary benefit of Superbolt is the reduction in torque required. This quick and efficient bolting method is based on a design which splits one big torque into a number of smaller ones. It has numerous advantages over conventional bolting products and ensures joints can be tightened with high accuracy, without the need for specialist skills or heavy tooling. Tightening in pure tension allows higher preloads on the same size bolt than conventional tightening methods.

By generating a preload high enough above the separating forces, bolting will not vibrate loose on properly designed joints. Added elasticity increases fatigue life of the bolted joint. Installations are safe because only small hand tools are required. This means there are no safety hazards from immense hydraulic pressures, no pinching hazards and no need for the lifting of large tools or sockets breaking under high pressure.

Multi-jackbolt tensioners are easy to install, even in confined spaces, and although there are multiple jackpoints to tighten, by using hand or air tools installation times are faster than other bolting methods.The high preload capacity and accuracy of this system has resulted in the design of smaller bolt sizes. Compact dimensions and reduction of tooling sizes allows for reduction of the size of machinery, reducing material and machining costs.

For more information contact Darryl Campbell, BMG, +27 (0)31 576 6221, [email protected], www.bmgworld.net



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