![]() ![]() When the concave upper nut is tightened, the effect produced is exactly the same as that produced by a hammer driving in a wedge. A small eccentricity in the sliding part of the convex top of the lower nut acts as the wedge. However, this method is unsatisfactory from the standpoint of operability.įigure 3 - The solution is to use two nuts to play the roles of the hammer and wedge respectively. ![]() Forcing a wedge into the gap between the cylinder and its surrounding tube makes it possible to create a powerfully locked assembly.įigure 2 - Creating matching key grooves in both the nut and bolt, and then using a hammer to drive a wedge into those grooves does provide a powerful self-locking effect. Secure - Exceedingly high anti-loosening effectįigure 1. Safe - Ideal for applications where reliability is critical Simple - Only a spanner wrench required for installation ![]()
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