Complete piston with integrated seals Prädifa series DR

The double-acting DR pneumatic piston is a multi-component seal design consisting of a multi-part metallic supporting element with a vulcanized guiding ridge, sealing lips and an integrated magnet for inductive position sensing. The complete piston performs four functions: sealing, guiding, position sensing and end position cushioning.

The extemely slim complete piston is suitable for use in diverse cylinder designs and with various sensors. The combination of all functions – sealing, guiding, cushioning, sensing – in a single component ensures ease of installation and additionally offers handling and logistics cost benefits.

• Due to application-optimized geometry and compounds suitable for use in oiled as well as in oil-free air (after initial lubrication on assembly).
• Use of different types of sensors (inductive) is possible.
• Cushioning buffers on the piston´s front faces with integrated ventilation ducts provide for mechanical cushioning of the cylinders.
• Multi-functional element: seal, guiding and cushioning element.
• Immediate response (full pressure load) thanks to incorporated venting channels.
• Good wear resistance.
• Ideal corrosion protection thanks to complete elastomer covering.
• Smooth running due to optimum adjustment of the functional lips.
• Easy attachment to the piston rod without additional sealing elements.
• Easy installation due to integrated static sealing function.
• Excellent media resistance in case of suitable compound selection.
• Low assembly height of the complete piston enables short cylinder designs.
• Versatile complete piston for nearly all cylinder designs.

Range of application:
Complete piston with end cushioning for double-acting pneumatic cylinders, provided that no excessive lateral guidance loads will occur (long strokes and buckling).

The DR complete piston with integrated end position cushioning is available in the following compounds:
• Z4004 – Industrial purposes
• Z4005 – Medium-duty
• Z4012 – Low temperatures