A faster and safer way to secure vibrating screen and crusher motor bolts has been shown to save two-thirds of the time previously taken for the installation and maintenance of drives.
Technofast’s EziTite hydraulic nuts have been used to secure vibrating mechanisms and drive motors to sieves, screens and comminution equipment. They are actuated simultaneously to give accurate, even and simultaneous torquing across sets of bolts used in screen applications.
The special EziTite fasteners incorporate a poly washer for extended service, eliminating problems with hex nuts, which vibrate loose, cannot control bolt load, and sometimes require the physically demanding use of flogging spanners.
“One of the issues facing operators of this type of equipment is the propensity for bolts to loosen under the constant vibration and cyclic loading,” Technofast Founder and CEO John Bucknell said. “We have alleviated this issue by incorporating a flexible poly washer to augment the performance of the EziTite fasteners in service.”
“One application in Western Australia dramatically cut the installation time for the motor bolts from a six-hour operation needing two or three personnel, to a two-hour operation involving two people,” Bucknell said. “The machine operator involved reported that using the poly washer as a shock-resistant component and tensioning them simultaneously with precise accuracy is a game changer.”
“Not only did the application benefit from easy installation and safer handling, but also the simultaneous and precise tensioning of the EziTite nuts produced highly accurate bolt loadings without the ‘cross talk’ coming from individual torque tightening. This resulted in a safer, more secure and longer-lasting joint,” Bucknell said.
EziTite Hydraulic Nuts and Bolts are rapidly applied by being installed on bolt studs then hydraulically actuated, stretching the bolt to the precise tension required and then locking it in place mechanically with a locking device. The reverse procedure permits equally rapid disassembly when it is eventually required for maintenance, for example.
They are particularly useful where:
Accurate and reliable loading is required on bolting;
Vibrational or torsional stresses are a problem;
Regular maintenance requires repeated adjustment or removal of nuts; and
There are confined or difficult nut locations.
Such safety benefits are true of many applications. EziTite hydraulic nuts are ideal for tensioning all of the studs on a flange, joint or cover simultaneously, loading 100% of the fasteners at once.