Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
8521
Standard cylinder DSN-20-125-P
Festo Standard cylinder DSN-20-125-P, part number 8521, is documented in the official Festo United States product data sheet. Review the technical specifications and operating conditions below when requesting a quotation.
Request pricing and availabilityCommercial response for your destination and required quantity.
Request a Quote- Manufacturer
- Festo
- Part number
- 8521
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 8521.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
Identification and family-level technical context are preserved from reviewed source evidence and official English-language manufacturer documentation.
- Stroke
- 125 mm
- Piston diameter
- 20 mm
- Piston rod thread
- M8
- Cushioning
- P: Flexible cushioning rings/plates at both ends
- Assembly position
- Any
- Conforms to standard
- CETOP RP 52 P | ISO 6432
- Piston-rod end
- Male thread
- Design structure
- Piston | Piston rod | Cylinder barrel
- Position detection
- No
- Variants
- Single-ended piston rod
- Working pressure
- 1 ... 10 bar
- Mode of operation
- double-acting
- Operating medium
- Compressed air in accordance with ISO8573-1:2010 [7:4:4]
- Note on operating and pilot medium
- Lubricated operation possible (subsequently required for further | operation)
- Corrosion resistance classification CRC
- 2 - Moderate corrosion stress
- Ambient temperature
- -20 ... 80 °C
- Impact energy in end positions
- 0.2 J
- Theoretical force at 6 bar, return stroke
- 158.3 N
- Theoretical force at 6 bar, advance stroke
- 188.5 N
- Moving mass with 0 mm stroke
- 44 g
- Additional weight per 10 mm stroke
- 7.2 g
- Basic weight for 0 mm stroke
- 186.8 g
- Additional mass factor per 10 mm of stroke
- 4 g
- Mounting type
- with accessories
- Pneumatic connection
- G1/8
- Materials note
- Conforms to RoHS
- Materials information for cover
- Wrought Aluminum alloy | neutral anodization
- Materials information for seals
- NBR | TPE-U(PU)
- Materials information for piston rod
- High alloy steel, non-corrosive
- Materials information for cylinder barrel
- High alloy steel, non-corrosive
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 8521. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.