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 industrial component, part number 556721, is a double-acting rotary vane structural design featuring a 32 mm piston diameter and a stroke of 10 mm to 100 mm. Operating on compressed air as per ISO 8573-1:2010 [7:4:4] within an operating pressure range of 2.5 bar to 8 bar, this unit achieves a swivel angle of 0 deg to 246 deg with a precision adjustment of -3 deg, a repetition accuracy of 0.1 deg, and a swivel angle backlash of 0.05 deg. It incorporates pneumatic shock absorber cushioning at both ends, elastic cushioning rings/pads at both ends, a 12 deg cushioning angle, ball bearing-guided torsion/guide protection, and through piston rod variants, with position sensing via a proximity switch for any mounting position. Submit the exact part number, quantity, and application requirements to receive 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 556721. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.