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Festo
557166
Compact air cylinder ADN-3"-1 1/4"-I-P-A
This Festo industrial component (part number 557166) is a double-acting pneumatic cylinder based on ISO 21287 featuring a 3-inch piston diameter, a 1.25-inch stroke, and a profile barrel structural design with elastic cushioning rings at both ends. Operating within a pressure range of 14.5 psi to 145 psi using compressed air, it delivers a theoretical advancing force of 678 lbf and a retracting force of 636 lbf at 6 bar. The unit incorporates a piston rod with an internal 1/2-20 UNF-2B thread, position sensing capabilities for proximity sensors, and a moderate corrosion resistance class of 2 for ambient temperatures spanning -4 °F to 176 °F. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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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
- 557166
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 557166.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Stroke
- 1.25 in
- Piston diameter
- 3"
- Piston rod thread
- 1/2-20 UNF-2B
- Based on norm
- ISO 21287
- Cushioning
- Elastic cushioning rings/pads at both ends
- Mounting position
- Any
- Mode of operation
- Double-acting
- Piston rod end
- Internal 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 557166. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.