Piston rod attachments
Cylinder attachments and accessories
Festo piston rod attachments connect the piston rod of a pneumatic cylinder to the load-bearing element while compensating for misalignment and lateral forces. The range includes Flexo couplings FK (metric threads M4 to M36), coupling pieces KSG and KSZ, and clevis joints SG. Flexo couplings accommodate angular and lateral offset, protecting the cylinder from bending stress; rigid coupling pieces KSG and KSZ provide positive-locking extension or connection of piston rods.
Flexo couplings FK are the preferred choice when piston rod and load are not perfectly aligned. The elastic element compensates for angular errors and prevents bending loads from reaching the cylinder piston. Rigid KSG/KSZ pieces are suited to accurately aligned connections that must transmit axial force only. Clevis joints SG are used when the load arm is hinged to the piston rod and a defined pivot is required.
Typical applications: Clamping mechanisms where the load acts slightly off-centre, linear axes with short guide spans, push-rod kinematics with defined pivot points, and test rigs where reproducible force introduction without a lateral component is required.




















