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Challenges when connecting electrical contacts In the electrical industry loose contact connections inevitably lead to system failure Common causes of failure in the bolted connection of an electrical contact are • Loss of preload due to increased settling amounts because of • the high number of joints when using multipart bolt lockings • different coefficients of thermal expansion of the bolts and the conductor materials • reduced torque during the assembly of the conductive materials in copper and aluminum • Loosening the connection • there is an increased risk of loosening due to inherent vibrations • Damage to the conductor materials and chip formation • the soft conductive materials are very susceptible to damage • furthermore chip formation is favored • Arcuate spring geometry minimizes settling and creeping effects • Positive locking effect • One piece easy to assemble • Protection of the mating surface due to the specially embossed skid shape • Locking effect with short clamp lengths and dynamic load • Bolt locking in case of thermal expansion • Continuous contact pressure and retention of the preload The advantages at a glance The NSK-Elock washer provides effective and permanent security when you connect electrical contacts Vorderseite Rückseite Front Back