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Tensioning - Application Checklist.pdf
Additional information
How it works
The mechanical tensioner at the small end of the taper stud (side A) pulls the stud into the expanding split sleeve for radial preloading.
The split sleeve expands and exerts a large radial force into the bores of the coupling bolt holes to give a truly fitted bolt.
The mechanical tensioner at the large end of the taper stud (side B) provides the axial clamping forces.
In removal, the large end tensioner (side B) is used to pull the stud out of the sleeve, which then collapses for easy withdrawal from the hole.
EzFit components
- Tapered stud
- Split tapered bore sleeve
- Positioning spacer
- MJT and hardened washer
Standard Range
EzFit mechanical expansion bolts can be designed using the latest FEA technology for any type of coupling with bolts of diameter 20mm (3/4″) or upwards.
Unique features and advantages of both hydraulic and mechanical expansion sleeve coupling bolts can be combined to best suit your specific requirements.
A type
- Mechanical expansion bolt for threadless bore
- Access and operation from one side
- Dimensions on request
B type
- Mechanical expansion bolt for blind holes
- Access and operation from one side
- Ø 28 – 165 mm
C type
- Mechanical expansion bolt for through-holes
- Access and operation from both sides
- Ø 28 – 165 mm
Product Benefits
Replacement without modification
The innovative EzFit expansion sleeve coupling bolt from Superbolt lets you replace large fitted or interference-fit bolts without modifying your equipment, optimizing drive and preventing coupling slippage.
High preloads with hand tools alone
Integral Superbolt multi-jackbolt tensioners (MJTs) enable EzFit to attain extremely high preloads with simple hand tools alone.
Accurate radial force
EzFit’s split, tapered bore sleeve also provides a true radial force that translates to greater flange connection rigidity and eliminates harmful micro-movements at the split line. Because the sleeve can compensate for a wider range of bore tolerances, it simplifies machining and installation.
Testing & Certification
Superbolt products have been rigorously tested and approved by independent institutes as well as certification authorities.
Certificates:
- ABS (American Bureau of Shipping)
- DNV (Det Norske Veritas)
- LRS (Lloyd’s Register of Shipping)
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