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 557931 is a double-acting industrial component featuring an 80 mm piston diameter, an M20x1.5 piston rod thread, and an adjustable stroke length ranging from 10 mm to 200 mm. Operating on compressed air per ISO 8573-1:2010 [7:4:4] within a 1 bar to 10 bar pressure range, this unit includes adjustable pneumatic cushioning at both ends, integrated flow control, and position sensing via proximity switch. It incorporates an external thread with a rod clevis, a 28 mm wide rod clevis/swivel mounting, and a swivel mounting on the bearing cap while delivering a theoretical retracting force of 2721 N at 6 bar. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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 557931. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.