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 557176, is a double-acting actuator with a 4-inch piston diameter, a 1.5-inch stroke, and an external 5/8-18 UNF-2A piston rod thread at one end based on the ISO 21287 norm. Featuring elastic cushioning rings at both ends, a profile barrel structural design with position sensing for proximity sensors, and a moderate corrosion resistance class (CRC 2), it operates within a pressure range of 14.5 psi to 145 psi and ambient temperatures from -4 °F to 176 °F using compressed air per ISO 8573-1:2010 [7:4:4]. At 6 bar, it delivers a theoretical retracting force of 1017 lbf and an advancing force of 1059 lbf with an end-position impact energy of 1.84 ft-lbf in any mounting position. 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 557176. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.