Brochure

A261-09_R-WN: clamp load
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clamp load [kN]
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Test 09 Test 10
A261-09_NL-WN: clamp load
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clamp load [kN]
Test 01 Test 02 Test 03 Test 04 Test 05 Test 06 Test 07 Test 08
Test 09 Test 10
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.
The performance of the Nord-Lock wheel nut has been
proven in a rigorous three step test program:
• Laboratory testing
• Controlled real-life testing, extreme conditions
• Live real-life testing, normal conditions
Results prove that the Nord-Lock wheel nut does not rotate
loose and will safely secure the wheel even under the most
extreme operating conditions. More information on all
testing is available at www.safe-wheels.com.
Laboratory 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.
Tested and approved by TÜV - for your safety
The Nord-Lock M22 wheel nut has been certified for safety
and quality by TÜV, a leading international institute in quality
and safety certification. In a two-step process, both the wheel
nut and its production were approved.
Scientific proof of the
wedge-locking function
The Nord-Lock wheel nut
Conventional wheel nut
cycles
clamp load [kN]clamp load [kN]
cycles
In the first step, extensive fatigue testing of the Nord-Lock wheel nut, at frequencies of 8 – 15 Hz,
showed no reduction of clamp load in the joint. Furthermore, the long-term product test, consisting
of 17.5 million oscillations, confirms that the Nord-Lock wheel nut would last the entire lifetime of
a truck. In the second step, TÜV also monitored and approved Nord-Lock’s production facilities,
encompassing everything from raw materials used to the processes in the manufacturing line.