What is a Nord-lock washer?
- Nord-Lock Group Nord-Lock Group Insights How does the Nord-Lock washer work? How does the Nord-Lock washer work? Nord-Lock washers secure bolted joints with tension instead of friction. Watch this video and let us explain how it works!
What is the difference between Nord lock and regular Nord lock?
Nord-Lock washers safely lock the bolt against the underlying surface. The outer diameter of regular Nord-Lock washers is designed for counterbore holes according to DIN 974, i.e. the washers fit under the head of standard bolts.
What should I do before remounting my Nord-lock washer?
Before remounting, control the reusability of each component of the assembly, including the Nord-Lock washers. Check that the cams on the inside of the washers are not completely worn, rusted or partially damaged, then proceed to check the serrations on the reverse side.
How do you tighten a through hole on a Nord lock?
As for all locking washers, through-holes require two pairs of Nord-Lock washers – one pair for securing the bolt and a second pair for securing the nut. Turn both fasteners in order to close the cams on both washer pairs before tightening to minimize settlements. Keep the nut secure while tightening the bolt.
Are Nord-Lock washers effective?
Nord-Lock wedge-locking washers consistently outperform alternative locking methods when it comes to securing bolted joints. This is proven by the results of thousands of Junker tests carried out for customers all over the world by Nord-Lock engineers.
When should you not use a Nord-Lock washer?
Designs where Nord-Lock washers are not recommendedMating surfaces that are not locked in place (see left figure)Mating surfaces harder than the washers.Very soft mating surface, e.g. wood, plastic.Applications with extremely large settlements.Non-preloaded joints.
Are lock washers effective?
They are still used on many applications in the belief that they will will "lock" the nut/bolt to the joint and prevent loosening. The body of evidence, based upon both experience and experimental results, is that they do not prevent loosening and can be shown to actually speed up the rate of loosening in many cases.
Are Nord-Lock washers reusable?
You can normally reuse Nord-Lock wedge-locking washers, but it is necessary to perform a thorough inspection of both washers in the pair for signs of damage first. Damaged or worn washers should not be reused, as this can limit the performance of the wedge-locking effect and expose your bolted joints to loosening.
Do you torque bolts with lock washers?
Lock washers are designed to be tightened to a required torque beneath an ordinary fastener. They exert a spring tension that keeps the fastener from vibrating loose. They are often attached to the nut side of the fastener.
How do Nord locks work?
The Nord-Lock principle Nord-Lock washers secure bolts with tension instead of friction. The system cannot loosen unintentionally as it creates a wedge-effect underneath the bolt head or nut. The system comprises of a pair of wedge-lock washers with cams on one side and radial teeth on the opposite side.
What kind of lock washers work best?
0:4911:53Why these lock washers are the only ones that actually work! Nord-LockYouTubeStart of suggested clipEnd of suggested clipSo that the difference is like split washers and lock nuts. And nylon lock nuts and all stuff theyMoreSo that the difference is like split washers and lock nuts. And nylon lock nuts and all stuff they work okay split washers don't work at all I don't use them on anything.
Do you really need lock washers?
Washers are used with bolt to give the nut a smooth, even surface to tighten against, better distribute pressure on softer materials and prevent pull-through. When are lock washers needed? Lock washers are needed when the fastener assembly is subject to vibration or wherever back off is considered an issue.
Do lock washers work NASA?
However, the washer is normally flat by the time the bolt is fully torqued. At this time it is equivalent to a solid flat washer, and its locking ability is nonexistent.In summary, a lockwasher of this type is useless for locking.” NASA, these are the brilliant minds that send people into outer space.
Are Nord-Lock washers single use?
Nord-Lock washers can normally be reused. As with all fasteners, they should be inspected for wear before reassembly. Make sure that the washers are reinstalled correctly cam face to cam face. Nord-Lock recommends lubrication of fasteners before reuse in order to minimize changes in friction conditions.
What are split ring washers for?
Split ring washers use friction to prevent bolted joints from loosening. They feature a ring that has been split and twisted - creating two sharp edges. These washers are installed between the bolt head/nut and mating surface, the bolted joint is then tightened in the same way as an unsecured bolt.
Can I use a lock washer on wood?
Toothed lock washers are also available, in varieties that feature either external or internal teeth to secure them to wood or other materials.
How many Junker tests are carried out in Nord Lock?
To prove the reliability of its products, Nord-Lock runs 10 000 Junker demonstrations worldwide every year, in the presence of its customers. In addition, nearly 100 customer-specific Junker tests are carried out in Nord-Lock’s laboratories every year.
What is Delta Protekt?
Washers are through hardened and treated with Delta Protekt® surface coating for improved corrosion resistance.
Can a wedge lock washer be loosen?
The system cannot loosen unintentionally as it creates a wedge-effect underneath the bolt head or nut. The system comprises of a pair of wedge-lock washers with cams on one side and radial teeth on the opposite side. The key is the difference in angles.
How many Nord lock washers are needed for through holes?
As for all locking washers, through-holes require two pairs of Nord-Lock washers – one pair for securing the bolt and a second pair for securing the nut. Turn both fasteners in order to close the cams on both washer pairs before tightening to minimize settlements. Keep the nut secure while tightening the bolt.
What is Nord Lock?
Nord-Lock created the original wedge-locking technology that secures bolted joints, even when exposed to severe vibration and dynamic loads. It is impossible for our products to loosen unintentionally due to the wedge created underneath the bolt head and nut.
What is a Nord lock washer?
The wedge securing technology used in Nord lock washer helps your screws remain tight even when they are exposed to dynamic loads or vibration. The Nord lock washer creates a wedge effect beneath your bolt or nut giving it a secure grip and preventing the nut from rotating. This mechanism provides a stable clump load during operation eliminating the need for retightening the bolt.
Is Nord lock washer reliable?
According to numerous tests that the lock washer has undergone, it has proven to outdo other lock washers and provide high and reliable performance. Different institutes have approved the Nord lock washer. It delivers maximum anti-rotation locking for years.
