Bolting tools
Pro Bolt tensioning nut with jacking bolts
High bolt preload with ordinary hand tools: the nut with jacking bolts
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ToolOrdinary torque wrench
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Installation sizeLike a standard hex nut
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Available forBuy
The Pro Bolt replaces an ordinary hex nut. You screw it onto a new or existing bolt, stud, threaded rod or shaft, against a hardened washer. You then tension the joint not with heavy hydraulic, pneumatic or electric tools, but with an ordinary torque wrench: you tighten the small jacking bolts around the main thread. Together they transfer the full preload evenly onto the main thread.
Not sure which tool best suits your application? Contact us; we will be happy to advise you.
Features
Easy tensioning
No hydraulic, pneumatic or electric tools needed.
Low tightening torques
The force is distributed over several jacking bolts, so much less torque is needed per bolt.
Compact
The same installation dimensions as an ordinary hex nut of the same class; ideal in tight spaces.
Accurate and reliable
The hardened washer protects the flange against deformation, for a more reliable preload.
Interchangeable
Directly replaces the existing hex nut.
Applications
Flanges and pressure vessels
For example waste heat boilers and heat exchangers.
Tight spaces
Where there is no room for a hydraulic wrench or bolt tensioner.
Heavy machine joints
Shafts, threaded rods and studs that require high preload.
Technical data
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Step 1Place the hardened washer around the main thread and run the Pro Bolt down against it.Operation
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Step 2Tighten the jacking bolts in the specified sequence.Operation
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Step 3The force of the jacking bolts goes via the hardened washer into the joint.Operation
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Dimension dataOn requestGeneral
