The specifications of Nord-Lock were accepted by various companies of international repute and the products are approved as per various industry standards. As a result, the products could achieve a proven track record of success. A host of industries including construction, manufacturing, processing, mining and ship building etc make use of the washers under this brand name. Besides, they are used in agriculture and forestry and by military as well. More and more types of industries are becoming regular users of these products. Since these products are meant for the joints they are of immense use during maintenance and repair works. Among the numerous certificates obtained by these products DNV, TUV, AbP and EBA are the most prominent ones. It is all the more important that the bolts that join various subassemblies together must be strong and secure. Though they must be easily removable, should not get loosened due to vibratioan or heavy loads. These washers ensure the security of bolts and provide the best solutions to all kinds of bolt securing problems.
The principal nord-Lock product consists of a pair of washers for wedge-locking. Their application is based on tension instead of friction. When the bolt and nut are tightened the radial teeth on the side of the washer maintain a grip on both surfaces making movement possible only across the cams that are provided on the other side of washer. The cams prevent loosening of the nut and bolt. This wedge-locking system has passed various vibration tets. The manufacturers of these products have developed various customized bolt-locking systems in order to meet the requirements of different clients. These washers are immensely used by railways for production as well as maintenance. The various applications in railway include Maintanance of coaches and brakes, signals, rails, switches, stretcher bars and car connections etc. These washers are very useful for any machinery that needs periodic maintenance services.
It is very easy to untighten the joints that are provided with these wedge locking systems. Only common tools are required to Untighten them. Before reassembly the components are lubricated. Lubrication will not affect the locking effect since the functioning of these washers is not based on friction. The graphite lubricant known as GTP600 is the most ideal for these wedge locking systems. This lubricant maintains uniform low friction conditions, prevent Corrosion and withstand heat up to the temperature of 600 degrees C. The bolts can be easily dismantled even after years of use if they are lubricated with GTP600. The washers ensure a reliable locking system unaffected by vibration and loads.
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