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 557170 is a double-acting industrial component built on the ISO 21287 norm featuring a 3-inch stroke, a 3-inch piston diameter, and a 1/2-20 UNF-2B internal piston rod thread at one end. This profile barrel unit operates within a 14.5 psi to 145 psi range utilizing compressed air per ISO 8573-1:2010 [7:4:4], delivering theoretical forces of 636 lbf retracting and 678 lbf advancing at 6 bar. It incorporates elastic cushioning rings at both ends for 1.33 ft-lbf impact energy dissipation, position sensing for proximity sensors, and a moderate corrosion resistance class rating of CRC 2. Submit the exact part number, quantity, and application requirements to request a formal quote for this component.
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 557170. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.