Festo ADN-50-25-A-P-A-11K8-S6 536309 ISO 21287 Compact Cylinder Double-Acting

Festo ADN-50-25-A-P-A-11K8-S6 is a double-acting compact cylinder conforming to ISO 21287. Piston diameter 50 mm, stroke 25 mm. Up to 50% less installation space than comparable standards-based cylinders to ISO 15552. Elastic cushioning rings/pads at both ends (P cushioning) for absorbing residual energy. The piston rod is equipped with external M12x1.25 male thread. Sensor slots on three sides allow flush mounting of proximity switches for end-position detection.

Applications:

• General pneumatic actuation in factory automation

• Material handling and conveyor systems

• Packaging machinery and assembly lines

• Applications where installation space is limited

Technical Specifications:

• Part number: 536309

• Mode of operation: Double-acting

• Piston diameter: 50 mm

• Stroke: 25 mm

• Conforms to standard: ISO 21287

• Pneumatic connection: G1/8

• Operating pressure: 0.6 bar … 10 bar (0.06 MPa … 1 MPa)

• Cushioning: P – Flexible cushioning rings/pads at both ends

• Piston rod end: External thread (M12x1.25 male)

• Position detection: Via proximity switch (sensor slots on three sides)

• Mounting position: Any

• Theoretical force at 6 bar advancing: 1178 N

• Theoretical force at 6 bar retracting: 1057 N

• Ambient / media temperature: –20 °C … +80 °C (S6 heat-resistant seals up to +120 °C)

• Operating medium: Compressed air as per ISO 8573-1:2010 [7:4:4] (lubricated operation possible; if applied, continued lubrication required)

• Corrosion resistance class (CRC): 2 – Moderate corrosion stress

• Heat-resistant seals (S6): Yes, up to +120 °C

• Housing material: Wrought aluminium alloy (smooth anodised cylinder barrel), die-cast aluminium (end covers)

• Piston rod material: High-alloy steel

• Seal material: TPE-U(PU)

• Product weight: approx. 660 g

• RoHS compliant

System Integration:

• Belongs to Festo ADN series of compact cylinders to ISO 21287. Installs directly into equipment via through-holes, female threads, or a full range of mounting accessories (foot, flange, swivel, etc.).

• Integrated sensor slots accept Festo proximity sensors (e.g., SME/SMT-8 series) without additional mounting brackets.

• S6 heat-resistant seals allow operation up to +120 °C, suitable for high-temperature environments (e.g., foundries, hot presses).

• The 11K8 variant code may indicate a special custom option (e.g., K8 extended piston rod). Refer to Festo documentation for precise configuration details.**

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products

• ADN-50-25-A-P-A (536314) – Standard version without S6 heat-resistant seals

• ADN-50-40-A-P-A – 40 mm stroke variant

• ADN-50-50-A-P-A – 50 mm stroke variant

• SME-8-S-LED-24 – T-slot proximity sensor for end-position detection

• SMBR-8-25 – Mounting kit (clamp) for sensor