Hinge cylinders are special clamping cylinders that are characterised by a rod clevis at the end of the piston rod and an articulated fork at the bearing cap. This simplifies installation in clamping fixtures. Furthermore, the hinge cylinders are particularly suitable for clamping components in welding processes. Clamping forces of up to 3016 N are possible. An option with clamping unit can also prevent the piston rod from slipping in unpressurised conditions. This ensures that the components are securely clamped and held.