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Laboratory testing

Independent comparative testing

At the IMA independent facility for engineering services in Dresden, Germany, the Nord-Lock wheel nut was subjected to severe vibration testing according to the DIN 651 51 standard (Junkers test). The testing also compared the function of the Nord-Lock wheel nut against other wheel nut products. The test results clearly show its superior safety. The Nord-Lock wheel nut performed flawlessly, even after being reused multiple times.

The graphs display the products tightened to 200 kN and the change in clamp load during 1000 load cycles. The conventional wheel nut rotated and lost most of its initial clamp load in the joint. The Nord-Lock wheel nut safely secured the wheel joint and maintained the clamp load. Only initial settlements are indicated in the graph.

Click here for the NORD-LOCK Bolt Securing System - Safety Washers Index page.

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