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Festo
557025
Compact cylinder ADN-1/2"-1/4"-I-P-A
The Festo 557025 is a double-acting industrial component based on ISO 21287 featuring a 0.25 in stroke, a 1/2" piston diameter, and a 4-48 UNF-2B internal piston rod thread. Operating within a pressure range of 14.5 psi to 145 psi, this profile barrel unit utilizes elastic cushioning rings at both ends and allows for position sensing via a proximity switch in any mounting position. It delivers a theoretical retracting force of 11.5 lbf and advancing force of 15.3 lbf at 6 bar using compressed air conforming to ISO 8573-1:2010 [7:4:4]. Submit the exact part number, quantity, and application requirements for 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
- 557025
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 557025.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Stroke
- 0.25 in
- Piston diameter
- 1/2"
- Piston rod thread
- 4-48 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
- Via proximity switch
- 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
- 0.052 ft-lbf
- Theoretical force at 6 bar, retracting
- 11.5 lbf
- Theoretical force at 6 bar, advancing
- 15.3 lbf
- Moving mass at 0 mm stroke
- 0.319 oz
- Additional moving mass per 10 mm stroke
- 0.425 oz
- Basic weight with 0 mm stroke
- 2.73 oz
- Additional weight per 10 mm stroke
- 0.071 oz
- Type of mounting
- Alternatively: | With through-hole | With internal thread | With accessories
- Pneumatic connection
- 10-32 UNF-2B
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 557025. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.