The distinguishing feature of the Bolt Tensioners of product group 8 is that several Bolt Tensioners are integrated in or on a ring structure or alike and work simultaneously so that several bolt threads can be pretensioned at the same time.

Main Features


  • single- or multi-stage
  • cylinder and piston applied firmly attached,
    firmly screwed to or integrated into a ring, ringsegment or plate

Advantages of PG
  • optimum method for generating the same pretensioning
    force on all screws simultaneously
  • shortest set-up times

Examples of Applications
  • whenever the generation of exactly the same pretensioning force in all
    screws is required simultaneously, or where the shortest possible
    assembly or disassembly times are required
  • container and vessel constructions
  • nuclear power plants

More SSV

We distinguish our Bolt Tensioners into 8 different product groups (designs)
which, in principle, have all the same function.