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Festo
557161
Compact air cylinder ADN-3"-2 1/2"-A-P-A
The Festo 557161 is a double-acting industrial component built on the ISO 21287 norm featuring a 3-inch piston diameter, a 2.5-inch stroke, and a 5/8-18 UNF-2A external piston rod thread. Operating within a pressure range of 14.5 psi to 145 psi, this profile barrel actuator utilizes elastic cushioning rings at both ends and accommodates position sensing via a proximity sensor. It achieves theoretical forces of 678 lbf advancing and 636 lbf retracting at 6 bar while withstanding moderate corrosion stress under a CRC 2 rating and ambient temperatures from -4 °F to 176 °F. Submit the exact part number, quantity, and application requirements to request a quote.
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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.
- Manufacturer
- Festo
- Part number
- 557161
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 557161.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Stroke
- 2.5 in
- Piston diameter
- 3"
- Piston rod thread
- 5/8-18 UNF-2A
- Based on norm
- ISO 21287
- Cushioning
- Elastic cushioning rings/pads at both ends
- Mounting position
- Any
- Mode of operation
- Double-acting
- Piston rod end
- External thread
- Structural design
- Piston | Piston rod | Prole barrel
- Position sensing
- For proximity sensor
- Variants
- Piston rod at one end
- Operating pressure
- 0.1 MPa...1 MPa | 1 bar...10 bar | 14.5 psi...145 psi
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4]
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- Corrosion resistance class (CRC)
- 2 - Moderate corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Ambient temperature
- -4 °F...176 °F
- Impact energy in the end positions
- 1.33 ft-lbf
- Theoretical force at 6 bar, retracting
- 636 lbf
- Theoretical force at 6 bar, advancing
- 678 lbf
- Moving mass at 0 mm stroke
- 14.2 oz
- Additional moving mass per 10 mm stroke
- 2.8 oz
- Basic weight with 0 mm stroke
- 46 oz
- Additional weight per 10 mm stroke
- 0.885 oz
- Type of mounting
- Optionally: | With through-hole | With internal thread | With accessories
- Pneumatic connection
- 1/8 NPT
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 557161. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.