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 556577 is a double-acting rotary vane industrial component featuring a 40 mm piston diameter, a 16 deg cushioning angle, and an adjustable swivel angle ranging from 0 deg to 240 deg with a -3 deg precision adjustment. Operating at pressures between 2.5 bar and 8 bar using compressed air conforming to ISO 8573-1:2010 [7:4:4], this unit incorporates pneumatic shock absorbers and elastic cushioning rings at both ends, a plain bearing-guide for torsion protection, and position sensing via proximity switch. It delivers a stroke of 10 mm to 200 mm, a maximum impact velocity of 500 mm/s, a repetition accuracy of 0.1 deg, and a swivel angle backlash of 2 deg in any mounting position. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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 556577. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.