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Precision lock nuts

Industrial lock nuts with lock washers are not considered to be suitable for super-precision bearing applications because of the relatively wide manufacturing tolerances of the thread and abutment surfaces. As a result, SKF has developed a full line of precision lock nuts that are manufactured within very tight tolerances. These simple to mount devices, which locate bearings and other components accurately and efficiently on a shaft, meet the requirements of machine tool applications, both technically and economically.
All SKF precision lock nuts use friction between the mating thread flanks of the spindle shaft and lock nut to hold them in place. To apply this friction, SKF manufactures two different precision lock nut designs:
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