Piston-, rod guide elements of PTFE

Guide bands of PTFE compound serve to locate pistons and rods, prevent metallic contact between the moving components and absorb any side loads that occur. Guide bands of this type are used in hydraulic and pneumatic cylinders.

Guide elements of PTFE compounds are characterized by their exceptional frictional behavior, stick-slip-free running and high thermal and chemical resistance.

PTFE guide elements can be supplied as ready-to-fit cut lengths for piston and rod guidance applications, but are also available in stock lengths. The profile is rectangular and beveled or rounded at the edges in order to avoid impermissible edge compression in the groove corners and to facilitate fitting in the groove.

The guide bands are generally provided with a diagonal cut; a straight 90° cut or a stepped Z cut is also possible.

The gap required for functional efficiency has already been provided in the case of the cut-to-size bands. This gap is required to avoid undesirable pressure build-up and to balance the elongation of the bands at high temperatures.
 

Benefits

• Outstanding frictional behavior
• No stick-slip effect, even at low velocities
• High wear resistance
• Good damping of mechanical vibrations
• Embedding of foreign particles possible,good wiping effect
• Simple groove design
• Available in stock lengths or in cut sizes ready for installation
   
  

Application ranges