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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
5211901
Round cylinder DSNU-S-12-40-P-A-MQ
The Festo 5211901 is a double-acting industrial component featuring a 12 mm piston diameter, a 40 mm stroke, and an M6 piston rod thread with elastic cushioning rings at both ends. It operates on compressed air according to ISO 8573-1:2010 [7:4:4] within an operating pressure range of 0.15 MPa to 1 MPa and an ambient temperature range of -20 °C to 80 °C, supporting position sensing via proximity switch and installation in any mounting position. The unit provides a theoretical force of 67.9 N advancing and 50.9 N retracting at 6 bar, while meeting ISO 14644-1 Class 5 cleanroom suitability and CRC 2 moderate corrosion resistance standards. Submit the exact part number, quantity, and application requirements to request a quote for this component.
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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
- 5211901
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 5211901.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Stroke
- 40 mm
- Piston diameter
- 12 mm
- Piston rod thread
- M6
- Cushioning
- Elastic cushioning rings/pads at both ends
- Mounting position
- Any
- Structural design
- Piston | Piston rod | Cylinder barrel
- Position sensing
- Via proximity switch
- Operating pressure
- 0.15 MPa...1 MPa | 1.5 bar...10 bar
- Mode of operation
- Double-acting
- 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-B2-L
- Cleanroom suitability, measured according to ISO 14644-14
- Class 5 according to ISO 14644-1
- Ambient temperature
- -20 °C...80 °C
- Impact energy in the end positions
- 0.07 J
- Theoretical force at 6 bar, retracting
- 50.9 N
- Theoretical force at 6 bar, advancing
- 67.9 N
- Moving mass at 0 mm stroke
- 16.2 g
- Additional moving mass per 10 mm stroke
- 2 g
- Basic weight with 0 mm stroke
- 35.9 g
- Additional weight per 10 mm stroke
- 4.2 g
- Type of mounting
- With accessories
- Pneumatic connection
- M5
- Note on materials
- RoHS compliant
- Cover material
- Wrought aluminum alloy, anodized
- Seals material
- TPE-U(PU)
- Piston rod material
- high-alloy stainless steel
- Material of cylinder barrel
- high-alloy stainless steel
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 5211901. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.