557139

Name: Festo 557139 Compact cylinder ADN-2 1/2"-3/4"-A-P-A
Brand: Festo

Compact cylinder ADN-2 1/2"-3/4"-A-P-A

The Festo part number 557139 is a double-acting industrial component featuring a 2 1/2" piston diameter and a 0.75 in stroke built on the ISO 21287 norm with a profile barrel, piston, and piston rod at one end. Operating on compressed air according to ISO 8573-1:2010 [7:4:4] within a pressure range of 14.5 psi to 145 psi and ambient temperatures from -4 °F to 176 °F, this unit delivers a theoretical advancing force of 420 lbf and a retracting force of 393 lbf at 6 bar. It incorporates elastic cushioning rings at both ends, external 1/2-20 UNF-2A piston rod threads, position sensing via proximity switch, and a moderate corrosion resistance class of CRC 2. Submit the exact part number, quantity, and application requirements for a quote.

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Manufacturer: Festo
Part number: 557139
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Technical Specifications

Stroke: 0.75 in
Piston diameter: 2 1/2"
Piston rod thread: 1/2-20 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 | Prole 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: 0.959 ft-lbf
Theoretical force at 6 bar, retracting: 393 lbf
Theoretical force at 6 bar, advancing: 420 lbf
Moving mass at 0 mm stroke: 6.37 oz
Additional moving mass per 10 mm stroke: 2.09 oz
Basic weight with 0 mm stroke: 25.6 oz
Additional weight per 10 mm stroke: 0.566 oz
Type of mounting: Alternatively: | With through-hole | With internal thread | With accessories
Pneumatic connection: 1/8 NPT

Engineering context

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Our sourcing response is prepared against Festo 557139. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.