Utilizing the wedge principle to form a strong self-locking structure is the purpose of (HL units). These are also known as hard lock nuts. A wedge forced into the space between a cylinder and the tube that surrounds it creates an assembly that locks forcefully. If this effect is achieved by matching grooves in the nut and bolt, a wedge can be hammered in but leaves the assembly difficult to operate.
Rather than using the brute force of a hammer, it is preferable from an operability standpoint to use one convex and one concave nut in place of the wedge and hammer. Tightening these two produces the same effect as driving a wedge in with a hammer. Using a threaded screw makes it easier to properly and securely position the wedge.
Paired self-locking units work best. The underside nut is tautened first; subsequently tighten the top one. Installing the upper nut manually forms the requisite tightening margin. The inherent self-locking result is invoked by the rotating force created by means of a wrench turning the cap nut.
The development of this variety of nut was intended to end the inconvenience of broken bolts and loose screws. This type of assembly has the advantage of preventing any loss of axial force resulting from metal fatigue. Antique Japanese architecture stimulated the design of these wedge-shaped, twin nut assemblies to cheaply eradicate the problem of looseness in screws and create advanced workability.
Certainty and trust are established by the confidence that HL units never acquire dangerous play. No ends of studies about screw looseness have demonstrated this kind of nut's superiority in safeguarding the primary tightening strength. Appraisals carried out on the job by construction industry workers have verified that using these pioneering nuts instead of old-fashioned kinds significantly lowers overheads in terms of man-hours. One further substantial plus is the knowledge that HL units provide enhanced security, preventing erection firms from coping with lawsuits launched because of industrial accidents following-on from sheared-off bolts or screws becoming loose.
There are a number of situations where only this technology has been proven to be adequate. One of these is when a repetitive external force works in the same rotational direction as the bolts, or vertically relevant to the bolt, or perpendicularly to the bolt. Another case can be whenever vibrations are constantly present. Extreme fluctuations in temperature can also be combated by the use of these mechanisms.
HL units create a seal comparable to riveting, adhesive bonding or welding. Unlike these fixings, HL units can be easily removed for servicing or maintenance. As the self-tightening performance does not deteriorate over time, HL units can be re-used time after time.
Hardlock Industry Co., Ltd. Is the foremost manufacturer of these very useful fasteners worldwide. Their technology has been approved for aerospace applications by projects including the Kansai International Airport. Leading American aerospace companies including Boeing utilize HL nuts for their safety record. The Japanese Olympic bobsleigh employs special HL units made from lightweight titanium, which have a whole bag of benefits all their own.
Rather than using the brute force of a hammer, it is preferable from an operability standpoint to use one convex and one concave nut in place of the wedge and hammer. Tightening these two produces the same effect as driving a wedge in with a hammer. Using a threaded screw makes it easier to properly and securely position the wedge.
Paired self-locking units work best. The underside nut is tautened first; subsequently tighten the top one. Installing the upper nut manually forms the requisite tightening margin. The inherent self-locking result is invoked by the rotating force created by means of a wrench turning the cap nut.
The development of this variety of nut was intended to end the inconvenience of broken bolts and loose screws. This type of assembly has the advantage of preventing any loss of axial force resulting from metal fatigue. Antique Japanese architecture stimulated the design of these wedge-shaped, twin nut assemblies to cheaply eradicate the problem of looseness in screws and create advanced workability.
Certainty and trust are established by the confidence that HL units never acquire dangerous play. No ends of studies about screw looseness have demonstrated this kind of nut's superiority in safeguarding the primary tightening strength. Appraisals carried out on the job by construction industry workers have verified that using these pioneering nuts instead of old-fashioned kinds significantly lowers overheads in terms of man-hours. One further substantial plus is the knowledge that HL units provide enhanced security, preventing erection firms from coping with lawsuits launched because of industrial accidents following-on from sheared-off bolts or screws becoming loose.
There are a number of situations where only this technology has been proven to be adequate. One of these is when a repetitive external force works in the same rotational direction as the bolts, or vertically relevant to the bolt, or perpendicularly to the bolt. Another case can be whenever vibrations are constantly present. Extreme fluctuations in temperature can also be combated by the use of these mechanisms.
HL units create a seal comparable to riveting, adhesive bonding or welding. Unlike these fixings, HL units can be easily removed for servicing or maintenance. As the self-tightening performance does not deteriorate over time, HL units can be re-used time after time.
Hardlock Industry Co., Ltd. Is the foremost manufacturer of these very useful fasteners worldwide. Their technology has been approved for aerospace applications by projects including the Kansai International Airport. Leading American aerospace companies including Boeing utilize HL nuts for their safety record. The Japanese Olympic bobsleigh employs special HL units made from lightweight titanium, which have a whole bag of benefits all their own.
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