Nord-Lock wheel nut
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The Nord-Lock wheel nut Product information

Loose wheel nuts cause more than loose wheels Loose wheel nuts on heavy vehicles is a costly, dangerous and unsolved problem. Fortunately, a solution to loose wheel nuts is available. A widespread and dangerous problem You might be surprised how often wheels fall off heavy vehicles. In the United Kingdom alone, there are up to 400 wheel detachments from trucks every year. Of those there are, on average, 134 accidents involving vehicle/property damage, 27 injury accidents and up to seven fatalities. So states a 2006 report commissioned by the United Kingdom Department of Transport entitled...

What makes wheel nuts come loose? The blame is normally placed on the driver when a wheel falls off its axle, even though conventional wheel nuts lack a locking function. While many drivers and firms have not experienced wheel detachment in the course of their work, unbalanced wheels due to loosening wheel nuts are a common occurrence. The result is not only increased costs but also unstable driving, which can contribute to driver fatigue. Loosening factors of wheel nuts Safe wheel assemblies rely on high clamp load. Loss of clamp load leads to movement between the clamped parts in the...

The solution to loosening wheel nuts The Nord-Lock wheel nut safely secures wheels on both on road as well as off road heavy vehicles. The product is based on the same principle as the Nord-Lock bolt securing system, and maintains high clamping force even under extreme operating conditions. Each nut incorporates a pair of captivated washers with cam faces on one side, where a cam angle ‘α’ is greater than the thread pitch ‘β’. On the opposite side there are radial teeth. When the wheel nut is tightened, the teeth of the Nord-Lock washers grip and lock the mating surfaces, allowing movement...

Scientific proof of the wedge-locking function 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. The Nord-Lock wheel nut A261-09_NL-WN: clamp load 240 220 200 180 clamp load [kN] clamp load [kN] 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 160 140 120 100 80 60...

Extreme operating conditions test, on-road On-road track testing was performed at RDW’s Test Center in Lelystad, The Netherlands. The wheel joints of a 3-axle extended trailer were secured with the Nord-Lock wheel nut marked in order to detect any rotation. The truck was then driven in both directions on an oval track with concave, banked curves in order to exert the same stress on all wheel joints. The wheel nuts were not retightened after 100 km of driving in order to simulate human error in combination with a worst case driving scenario. Result There were no signs of wheel nut loosening....

Technical specifications & assembly instructions Technical specifications The Nord-Lock wheel nut is a Swedish product manufactured from high-quality steel. The product is prelubricated to ensure uniform friction and thereby accurate preload during tightening. The lubrication also inhibits corrosion which facilitates disassembly and helps prolong the life of wheel studs. The Nord-Lock wheel nut is reusable and durable. Surface coating: Corrosion resistance: 600 hours according to ISO 9227 Thread tolerance after coating: 6H Lubrication: Anti-corrosive wax Property class: Full traceability...

Assembly instructions • Place the rim over the wheel hub. Ensure the wheel studs are not damaged • Fit and tighten the nuts with a calibrated torque wrench at the recommended torque, in the sequences illustrated here • Retighten the nuts after 100 km of driving Maintenance Before reuse, inspect the nuts and wheel studs to make sure that the threads are free from particles and are undamaged. Re-lubricate the nuts before reuse. 11

Nord-Lock bolt securing systems are designed to secure fasteners in extreme conditions. We have over 25 years of experience in collaborating with our customers to achieve effective bolt security. We have an international team of sales engineers who visit our clients locally. We will help you optimize your bolted joints in order to minimize overall cost and maximize safety. Authorized distributor: Nord-Lock Group Tel: +46 (0) 31 7192 300, Fax: +46(0) 40 240 851, Email: info@nord-lock.com www.safe-wheels.com Our premium bolt securing systems give effective security throughout an assembly’s...