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Festo
557021
Compact cylinder ADN-1/2"-3/4"-A-P-A
The Festo 557021 is a double-acting industrial component featuring a 0.75-inch stroke, a 1/2-inch piston diameter, and a 10-32 UNF-2A external piston rod thread based on the ISO 21287 norm. This profile barrel cylinder operates at pressures from 14.5 psi to 145 psi using compressed air, incorporates elastic cushioning rings at both ends, and provides position sensing via proximity switch. It delivers a theoretical force of 15.3 lbf advancing and 11.5 lbf retracting at 6 bar while withstanding an ambient temperature range of -4 °F to 176 °F and moderate corrosion stress (CRC 2). Submit part number 557021, required quantity, and application parameters to request a formal quote.
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Request a QuoteWhy no listed price?
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
- 557021
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 557021.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Stroke
- 0.75 in
- Piston diameter
- 1/2"
- Piston rod thread
- 10-32 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
- 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 557021. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.