hynew CamNuts

知识来源:专业液压扳手生产厂-江苏海力机械制造有限公司
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发布时间:2013-01-26

CamNuts

Many Technofast product users have wished to extend the benefits of EziJac Tensioning Systems across more applications,
but have been restricted by bolts which do not have sufficient stud protrusion through the nut to apply these tools。 There are
many instances where stud replacement is not an option, or where stud protrusion is undesirable。

Technofast’s revolutionary CamNut EziJac system brings an affordable and efficient solution to this problem, in a compact
system which is simple, safe and easy to use。

Normally, a Bolt Tensioning tool pulls on the bolt threads protruding above the regular hex nut, which is then screwed down
to retain the loads induced by hydraulic operation of the tool。 With no available thread, the CamNut performs as the connection
to the bolt for the operation。 Its integral collar expands to take up the bolt’s elongation under force and retains the load when
the hydraulic charging pressure is released。

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Features
The patented design of the CamNut is inexpensive and has the following advantages:

• User friendly, fast to fit & remove。
• Requires little physical effort。
• Ideal for situations with short bolt grip length。
• Modular construction reduces overall tool weight。
• Designed for extreme situations / adverse conditions。
• No longer need to replace expensive studs to provide sufficient grip length。

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Suitable for:
The CamNut is suitable:

• When accurate and reliable loading is required。
• When confined spaces are an issue, including restricted bolt spacing。
• Where environmental issues are a concern

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Applications:
A few examples of applications are:

• Pressure Vessel Closure (i。e。: Autoclaves, Boilers, etc)。
• Crusher Liner Bolts。
• Flange Makeup
• Turbine Joints

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CamNut Standard Range
A standard range of CamNuts are available for use with Technofast’s A3 Spring Return Series EziJacs。
Example:
A3S-T2 = 361 kN (max load)
A3S-T4 = 666 kN (max load)
A3S-T6 = 1216 kN (max load)
A3S-T8 = 1900 kN (max load)
Custom Units also available

Max Load refers to a Hydraulic pressure of 1500 bar being applied to the Tensioner。
CamNut Patent No: PCT/WO2005/123345


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