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
This Festo industrial component, part number 557279, is an ISO 21287 compliant double-acting actuator featuring a 4" piston diameter, an adjustable stroke ranging from 0.197 in to 15.7 in, and a profile barrel structural design with a guide rod with yoke for torsion protection and a through piston rod. It operates within a pressure range of 1 bar to 10 bar using compressed air as per ISO 8573-1:2010 [7:4:4], delivering a theoretical force of 1017 lbf retracting and up to 1059 lbf advancing at 6 bar. The unit incorporates elastic cushioning rings at both ends, position sensing capabilities for proximity sensors, and a moderate corrosion resistance class (CRC 2) across an ambient temperature range of -4 °F to 176 °F. 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 557279. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.