Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Festo
The Festo part number 3656861 is a double-acting industrial component featuring an 80 mm piston diameter, an 80 mm stroke, and an M20x1.5 external piston rod thread conforming to ISO 15552 standards. Built with a profile barrel structural design and self-adjusting pneumatic end-position cushioning, this unit operates within a pressure range of 0.04 MPa to 1.2 MPa and delivers a theoretical retracting force of 2721 N at 6 bar. It supports position sensing via proximity switch, functions across an ambient temperature range of -20 °C to 80 °C, and exhibits a moderate corrosion resistance class (CRC) of 2. Submit the exact part number, quantity, and application requirements to request a quote.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Festo 3656861. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.