SSV PG1
Bolt Tensioner for recessed bolt threads
Cost-reducing - Powerful - Reusable
Basic position
Place the SSV onto the bolt to be tensioned and screw the Thread Sleeve down to the Piston surface. A hydraulic high-pressure pump, through a flexible hose, feeds oil into the space between Cylinder and Piston. The hydraulic pressure increases.
Piston
Bolt to tension
Thread Sleeve
Cylinder
Elongation and compression
As the hydraulic pressure increases, the resulting axial force elongates the Bolt and compresses the flanges. Thus, the Main nut lifts from the flange. On reaching the desired tension, pressurizing is stopped.
Main Nut
Positioning of the Main nut
The tensioning force is achieved and the Main nut can be turned down to contact the flange. When releasing the oil pressure, the desired tensioning force remains in the bolt connection. After removing the SSV, you may use the equipment for tensioning other bolts.
Advantages
Bolt Tensioners
„Crossover-tightening“ of several bolts at several points is no longer necessary, since SCHAAF SSV and HM offer the possibility of tightening all the bolt connections simultaneously with exactly the same tensioning force. This also applies when increasing the tensioning force.
As opposed to thermal screw starting procedures, SCHAAF SSV and HM make it possible to eliminate different gaps between individual components. Each bolt can be tensioned with exactly the same force and not over the same distance!
SCHAAF SSV and HM make it possible to apply a residual tensioning force by means of test force stress application in order to determine if any settling of the screw may occur, and if so, to eliminate it.
With a compact unit and the ability to interchange the component parts relating to the size of the bolt, SCHAAF SSV can also be used for other thread sizes.
SSV and HM will dramatically save time required for tensioning applications. This effect increases for higher tensioning forces, larger bolt thread diameters and also the installation of several SCHAAF SSV or HM. Time savings up to 99% are possible! It is no longer necessary to apply large torque by hand. There is a number of handling features available, designed to make work easier with SCHAAF Bolt Tensioners and Hydraulic Nuts, especially when it comes to large dimensions.
Features SSV PG1
- single-stage
- tension nut
- for recessed bolt threads
- SSV simple to place, thus short set-up times
- short spindle path of nut due to recessed tension thread
- easy handling because of low weight of tension nut when screwing on and off
More Bolt Tensioners
Bolt Tensioner for recessed bolt threads
Bolt Tensioner for continuous bolt threads
Bolt Tensioner with immersion nut (puller)
Bolt Tensioner for recessed bolt threads with tension thread directly in the piston
Bolt Tensioner for recessed bolt threads with tension thread directly in the piston
Bolt Tensioner with lengthened bolt for continuous or recessed bolt threads
Bolt Tensioner with a multistage cylinder-piston-set
Bolt Tensioner as ring segment for simultaneous pressurisation of all SSV
Versions
Areas of Application
Quality Assurance
All Bolt Tensioning Tools and Hydraulic Nuts are checked for material quality, dimensional accuracy, proper operation, and pressure resistance. They are subject to quality assurance measures during order execution and delivered with detailed documentation.
Services
Related Accessories
Fully assembled and ready for immediate use Hand lever pump up to 4,000 bar hydraulic pressure.
