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 557155 is a double-acting industrial component with a 3-inch piston diameter, a 0.5-inch stroke, and a 5/8-18 UNF-2A external piston rod thread, built on the ISO 21287 norm with a profile barrel and position sensing for proximity sensors. It operates within a pressure range of 14.5 psi to 145 psi and temperatures from -4 °F to 176 °F, utilizing compressed air as per ISO 8573-1:2010 [7:4:4] with optional oil lubrication. The unit features elastic cushioning rings at both ends, a moderate corrosion resistance class of 2, and delivers a theoretical force of 678 lbf advancing and 636 lbf retracting at 6 bar. Submit the exact part number, quantity, and application requirements for a formal 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 557155. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.