📍 107/108, Mill Road, Near ENTYCE Mills, Coimbatore - 641001, Tamil Nadu, India

Festo DSNU-S-12-40-P-A-MQ – Round Cylinder | Bore 12mm, Stroke 40mm | Murali Pneumatics Coimbatore

SKU: 5211901 ● In Stock
The Festo DSNU-S-12-40-P-A-MQ is a compact double-acting round cylinder from the DSNU-S series, featuring a 12mm bore and 40mm stroke with high-alloy stainless steel piston rod and cylinder barrel — making it especially suited for corrosive, washdown, or cleanroom environments. Built to ISO 6432 standards with M5 pneumatic connections, elastic cushioning at both ends, and proximity switch–compatible position detection, this cylinder delivers reliable linear motion with minimal footprint. Ideal for food processing, pharmaceutical automation, packaging machinery, and clean manufacturing lines where hygiene, corrosion resistance, and compact dimensions are priorities. Festo Part Number: 5211901 | Model: DSNU-S-12-40-P-A-MQ Available with Murali Pneumatics, your authorized Festo dealer in Coimbatore. **Note:** This cylinder is supplied as a base unit. Mounting accessories (brackets, flanges) and proximity switches must be ordered separately. Consult us for compatible Festo accessories.

Specifications

SeriesDSNU-S
Festo Part Number5211901
Cylinder TypeRound Cylinder (ISO 6432)
Operating PrincipleDouble-Acting
Bore Size12 mm
Stroke Length40 mm
Piston Rod ThreadM6
Pneumatic Connection (Port Size)M5
Operating Pressure1.5 bar … 10 bar (0.15 MPa … 1 MPa)
CushioningElastic cushioning rings at both ends
Mounting TypeWith accessories (ordered separately)
Position SensingVia proximity switch (external)
Body MaterialHigh-alloy stainless steel
Seal MaterialTPE-U (PU)
Ambient Temperature Range−20 °C … +80 °C
Cleanroom SuitabilityISO 14644-1 Class 5
Corrosion Resistance ClassCRC 2 – Moderate corrosion stress
RoHS CompliantYes

Product Description

Festo DSNU-S-12-40-P-A-MQ – Stainless Steel Round Cylinder, Bore 12mm × Stroke 40mm

The Festo DSNU-S-12-40-P-A-MQ belongs to the DSNU-S series of ISO 6432 round cylinders — a stainless steel variant designed specifically for environments where standard aluminium cylinders fall short. With a high-alloy stainless steel piston rod and cylinder barrel paired with an anodised wrought aluminium alloy cover, this cylinder is built for moderate-to-demanding corrosion conditions while maintaining the compact round profile the DSNU series is known for. It carries cleanroom suitability up to ISO 14644-1 Class 5, making it a genuine option for food, pharma, and precision assembly lines where particle generation and chemical resistance matter.

Key Features

  • Stainless steel piston rod and cylinder barrel — Corrosion resistance class CRC 2, suitable for washdown environments, mild chemical exposure, and humid operating conditions without premature degradation.
  • ISO 14644-1 Class 5 cleanroom suitability — Tested and measured per ISO 14644-14; suitable for deployment in controlled manufacturing environments including pharmaceutical and electronics assembly.
  • Double-acting operation — Positive drive in both advance and return strokes; advance stroke force 67.9 N and return stroke force 50.9 N at 6 bar, delivering consistent actuation under load.
  • Elastic cushioning rings at both ends — Absorbs end-of-stroke impact (rated at 0.07 J) without requiring external shock absorbers on light-load applications, reducing installation complexity.
  • M5 pneumatic connections — Industry-standard port size compatible with a wide range of Festo push-in fittings and miniature flow control valves, simplifying circuit build.
  • Proximity switch–compatible position detection — External sensors can be mounted for position feedback without modifying the cylinder, enabling PLC-controlled automation sequences.
  • Any mounting position — No orientation restriction; mount horizontally, vertically, or at any angle without performance compromise.
  • LABS (PWIS) conformity to VDMA 24364-B2-L — Safe for use near paint and coating lines; no paint-wetting impairment substances in the materials used.
  • RoHS compliant — Meets EU and UK RoHS directives; suitable for export-oriented production facilities with compliance requirements.
  • Wide operating temperature range (−20 °C to +80 °C) — Handles both cold storage adjacent automation and elevated-temperature industrial environments without seal degradation.

Technical Specifications

Parameter Value
Festo Part Number 5211901
Model Number DSNU-S-12-40-P-A-MQ
Product Type Round Cylinder (ISO 6432)
Mode of Operation Double-acting
Piston Diameter (Bore) 12 mm
Stroke 40 mm
Piston Rod Thread M6
Pneumatic Connection M5
Operating Pressure 1.5 bar … 10 bar (0.15 MPa … 1 MPa)
Theoretical Force – Advance Stroke (at 6 bar) 67.9 N
Theoretical Force – Return Stroke (at 6 bar) 50.9 N
Cushioning Elastic cushioning rings/plates at both ends
Impact Energy at End Positions 0.07 J
Position Detection Via proximity switch (external)
Mounting Position Any
Type of Mounting With accessories (ordered separately)
Operating Medium Compressed air to ISO 8573-1:2010 [7:4:4]
Lubrication Lubricated operation possible (once lubricated, must remain lubricated)
Ambient Temperature Range −20 °C … +80 °C
Moving Mass (0 mm stroke) 16.2 g
Additional Moving Mass per 10 mm Stroke 2 g
Basic Weight (0 mm stroke) 35.9 g
Additional Weight per 10 mm Stroke 4.2 g
Cylinder Barrel Material High-alloy stainless steel
Piston Rod Material High-alloy stainless steel
Cover Material Anodised wrought aluminium alloy
Seal Material TPE-U (PU)
Corrosion Resistance Class (CRC) 2 – Moderate corrosion stress
Cleanroom Suitability Class 5 per ISO 14644-1 (measured per ISO 14644-14)
LABS (PWIS) Conformity VDMA 24364-B2-L
RoHS Compliance Yes
Conforms to Standard ISO 6432

Common Applications

  • Food and beverage packaging lines — Stainless steel construction and cleanroom Class 5 rating make this cylinder appropriate for pick-and-place, lid pressing, and filling station actuators where hygiene standards apply.
  • Pharmaceutical blister pack and tablet handling machinery — Low particle generation and PWIS conformity suit controlled production environments in Coimbatore's growing pharma component supply base.
  • Textile machinery auxiliary functions — Compact 12mm bore fits into tight shuttle guides, thread tensioner actuators, and weft insertion mechanisms on looms and winding machines.
  • Precision assembly jigs and fixtures — Small bore and accurate stroke allow controlled clamping, component positioning, and micro-actuation in electronics and instrument manufacturing.
  • Plastic injection moulding gate actuation — Stainless rod resists mould-release agents and cleaning solvents; suitable for hot-runner gate pin drives in moulding operations.
  • Laboratory and analytical instrument automation — Cleanroom suitability and smooth operation support sample handling, pipette positioning, and slide actuation in automated lab systems.

Why Buy from Murali Pneumatics?

  • Authorized Festo Channel Partner since 1991 — Over three decades of Festo product expertise based in Coimbatore, serving industries across Tamil Nadu and South India.
  • 100% genuine products with full Festo warranty — Every unit supplied carries Festo's original warranty and traceability; no grey-market or counterfeit risk.
  • Ready stock of popular DSNU-S variants — Common bore and stroke combinations are maintained in stock at our Mill Road store; call ahead to confirm availability for your exact model.
  • Expert technical support — Our team can help with bore selection, force calculations, compatible fitting selection, and proximity switch recommendations. Call +91 98422 47546.

Compatible Accessories

  • Mounting brackets and flanges — Festo foot brackets, front flange mounts, and swivel mounts compatible with the DSNU-S 12mm series (order separately).
  • Proximity switches — Festo SME or SMT series sensors for external groove or band mounting to enable position feedback.
  • M5 push-in fittings — Festo QS-M5-4 or QSM-M5-4 miniature push-in fittings for 4mm OD tubing, matching the M5 port on this cylinder.
  • 4mm OD pneumatic tubing — Festo PUN or PLN series polyurethane or nylon tubing for M5 port connections.
  • Miniature flow control valves — Festo GRLA-M5 or similar for adjustable piston speed control in the circuit.
  • Miniature silencers — U-series or AMVL series for M5 exhaust ports where noise attenuation is needed.
All accessories available from stock at Murali Pneumatics, Coimbatore. Ask us to bundle your complete cylinder assembly — fittings, tubing, sensors, and mounting hardware — in a single order.

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