RENOLD 406 part numbers: Mechanical Power Transmission Products
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Flexnuts are used in combination with Superbolt tensioners and are designed to flex out at the bottom and flex in toward the top of the nut.
This distributes the bolt load along many threads, adds elasticity, and prevents stress concentrations in the first few threads.
For through hole applications we have developed the Superbolt flexnut, which is a reactive nut that is able to flex elastically. Putting a
Flexnut gives the same advantages as the MJT on the reactive side. Under load they flex at the bottom and at the top. This helps relieve
stress concentrations and increases the fatigue life of the bolt. Since flexnuts are reactive nuts to be used opposite our tensioners, they
are never torqued directly to achieve preload.
Advantages with Superbolt Flexnuts:
• Under load they ensure an equal load distribution on the thread of the bolt/stud.
• Adds elasticity in the joint.
• Increases the fatigue life of the bolt/stud.
SX8 - Standard flexnut
For through hole applications we have developed the Superbolt flexnut, which is a reactive nut that is able to flex elastically.
Description:
Flexnuts are used in combination with our other products. They are designed to flex out at the bottom and flex in toward the top of the nut.
This distributes the bolt load along many threads, adds elasticity, and prevents stress concentrations in the first few threads. This reduces
the possibility of stud breakage.
Selection Guide:
• SX8 - Standard flexnut
• Dimension range: M20-M160 (3/4" - 6")
• Approx. bolt stress depending on size: 450 to 700 N/mm2 (60 to 100 ksi)
• Temperature range: -10 to 250oC (0 to 500oF)
• Surface treatment: optional
• Application samples: Reactive nut for through hole applications. Adds elasticity to bolted joints. Highly recommended
for short clamp lengths.
• Notes: In combination with MT nut-style tensioners or SB8 bolt-style tensioners.
SX12 - High-strength flexnut
For through hole applications we have developed the Superbolt flexnut, which is a reactive nut that is able to flex elastically.
Description:
Flexnuts are used in combination with our other products. They are designed to flex out at the bottom and flex in toward the top of the nut.
This distributes the bolt load along many threads, adds elasticity, and prevents stress concentrations in the first few threads. This reduces
the possibility of stud breakage.
Selection Guide:
• SX12 - High-strength flexnut
• Dimension range: M20-M160 (3/4" - 6")
• Approx. bolt stress depending on size: 500 to 900 N/mm2 (70 to 130 ksi)
• Temperature range: -10 to 250oC (0 to 500oF)
• Surface treatment: optional
• Application samples: Reactive nut for through hole applications. Adds elasticity to bolted joints. Highly recommended
for short clamp lengths.
• Notes: In combination with CY nut-style tensioners or SB12 bolt-style tensioners.
In line with the manufacturer's requirements, Brake Products, Inc. is now obligated to obtain the following application information, before providing any fasteners inquiries/orders:
What is the application?
What is the required preload or what are they currently torqueing the nuts to?
What is the operating temperature?
Are there any space limitations?
Attach any drawing or picture of the application.
This is only the basic application information and more questions may follow depending on the application itself.
Enter at least three characters of a Superbolt part number to retrive the list of all documents (such as specifications, manuals, guides, drawings, etc.) from our web site, referencing this part number:
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What is a multi-jackbolt tensioner?
A "Superbolt" or "multi-jackbolt tensioner (MJT)" is a direct replacement for hex nuts, covered
nuts, bolts, etc. They spin onto your existing bolt or stud and provide a better way to bolt up your joint. They
consist of three components, shown above.
Superbolt multi-jackbolt tensioners (MJTs) replace existing hex nuts. Only hand tools are required for installation and removal of any size
tensioner. Safe, accurate and economical! We have a wide range of standard series, as well as an unlimited capacity to create special designs
to meet your unique needs.
Bolt style Superbolt multi-jackbolt tensioners (MJTs) replace existing studs or bolts. Ideal for applications with tapped holes, or where
threading a stud into a nut would be impractical. The outside diameter is smaller than a nut type tensioner on a stud, allowing MJTs to fit
into tighter areas.
Flexnuts are used in combination with Superbolt tensioners and are designed to flex out at the bottom and flex in toward the top of the nut.
This distributes the bolt load along many threads, adds elasticity, and prevents stress concentrations in the first few threads.
SMX Mill Motor Nuts are used to replace standard mill motor armature nuts supplied by electric motor manufacturers. SMX tensioners are available for most standard motor frame sizes. Preload matches the hub stress capacity of brake wheels and pulleys.
This web site is owned and operated by Brake Products, Inc.
16751 Hilltop Park Place
Chagrin Falls, Ohio 44023
Phone: (440) 543-7962
Fax: (440) 543-7963
Web: www.brakeproducts.com
Email: sales@brakeproducts.com
Federal ID #: 34-1473351
CAGE Code: 1QTP8
DUNS# 14-748-2392
Download: Form W-9
ACH Form: Word / PDF
