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 577173 is a double-acting industrial component featuring a 20 mm piston diameter and a 60 mm stroke with an M8 external piston rod thread at one end. This ISO 21287 conforming unit operates on compressed air within a 1.5 bar to 10 bar pressure range and utilizes self-adjusting pneumatic end-position cushioning. Built with a Class 2 corrosion resistance and Class 5 cleanroom suitability per ISO 14644-1, the device functions in ambient temperatures from -20 °C to 80 °C and supports position sensing via a proximity switch. Submit the exact part number, quantity, and application requirements for 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 577173. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.