The Festo DSNU-S-12-15-P-A-MQ is a compact double-acting round cylinder from the DSNU-S series, featuring a 12 mm bore and 15 mm stroke with a stainless steel piston rod and cylinder barrel — built for demanding environments including cleanroom and moderate corrosion conditions. With M5 pneumatic connections and elastic cushioning at both ends, it suits tight-space automation tasks where reliability and cleanliness matter. This cylinder is designed for proximity-switch-based position detection, making it easy to integrate into automated sequences. Festo Part Number: 5211897. Mounting accessories are required separately and are not included with this base unit. Available with Murali Pneumatics, your authorized Festo dealer in Coimbatore.
The DSNU-S-12-15-P-A-MQ is a short-stroke, small-bore round cylinder from Festo's DSNU-S series — a refined variant of the well-established DSNU round cylinder family engineered with stainless steel internals for use in environments that demand both hygiene and durability. With a 12 mm piston diameter and a 15 mm stroke, this unit delivers precise, repeatable linear motion in a compact envelope. The all-stainless piston rod and cylinder barrel, combined with cleanroom Class 5 suitability (ISO 14644-1), make it a practical choice wherever contamination control is a genuine process requirement.
Key Features
High-alloy stainless steel piston rod and cylinder barrel — resists corrosion, chemical exposure, and regular washdown cycles without surface degradation.
Cleanroom Class 5 suitability (ISO 14644-14 / ISO 14644-1) — certified for use in controlled environments; suitable for pharmaceutical, medical device, and food-grade automation lines.
Double-acting operation — positive force on both advance and return strokes; advance force 67.9 N and return force 50.9 N at 6 bar, giving reliable bidirectional actuation.
Elastic cushioning rings at both end positions — absorbs end-of-stroke impact energy (0.07 J), reducing mechanical shock on the cylinder and connected tooling without the need for adjustable cushioning.
M5 pneumatic connection — compact port size matched to the small bore; compatible with standard M5 push-in fittings for clean, tool-free tube routing.
Proximity switch compatible — cylinder barrel and geometry support standard Festo proximity switches (T-slot and band-mount types) for position feedback integration.
LABS (PWIS) conformity to VDMA 24364-B2-L — low paint-wetting impairment substance compliant; suitable for use in automotive and surface-finish-sensitive production areas.
Any mounting position — no orientation restriction simplifies machine design and installation; mounting via accessories (ordered separately).
RoHS compliant materials — meets current EU and UK environmental regulations; safe for use in CE-marked machinery assemblies.
TPE-U (polyurethane) seals — excellent abrasion resistance and broad media compatibility; supports lubricated operation if required by the application.
Technical Specifications
Parameter
Value
Festo Part Number
5211897
Model Number
DSNU-S-12-15-P-A-MQ
Product Type
Round Cylinder
Mode of Operation
Double-acting
Piston Diameter (Bore)
12 mm
Stroke
15 mm
Piston Rod Thread
M6
Pneumatic Connection
M5
Operating Pressure
1.5 bar … 10 bar (0.15 MPa … 1 MPa)
Theoretical Force – Advance Stroke (6 bar)
67.9 N
Theoretical Force – Return Stroke (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
Mounting Position
Any
Type of Mounting
With accessories (not included)
Operating Medium
Compressed air to ISO 8573-1:2010 [7:4:4]
Note on Operating Medium
Lubricated operation possible (if used, lubrication must be continuous)
Ambient Temperature
-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 (Polyurethane)
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
Design – Piston
Piston
Design – Piston Rod
Piston rod
Design – Cylinder Barrel
Cylinder barrel
Common Applications
Pharmaceutical and medical device assembly — cleanroom Class 5 certification and stainless internals make this cylinder directly suitable for tablet press loading, blister pack indexing, and aseptic assembly jigs.
Food and beverage packaging lines — stainless steel barrel and LABS-compliant design suit hygienic clamping, portioning gate actuation, and labelling line reject mechanisms where washdown is routine.
Textile machinery micro-actuation — compact 12 mm bore fits within the tight mechanical envelopes of yarn tensioning arms, thread guides, and thread break detection units common in Coimbatore's spinning mills.
Electronics and semiconductor handling — low moving mass and small bore provide gentle, precise strokes for PCB clamping, pick-and-place tooling, and component ejection.
Laboratory and analytical automation — cleanroom rating and repeatable short stroke suit sample carousel indexing, pipette actuation, and valve actuation on automated test benches.
Precision assembly fixtures in automotive and machined component production — double-acting force in both directions and proximity feedback allow tight sequence control on small-part clamping and locating fixtures.
Why Buy from Murali Pneumatics?
Authorized Festo Channel Partner since 1991 — over three decades of Festo product experience; we know these cylinders across every revision and variant.
100% genuine Festo products with full manufacturer warranty — every unit supplied is sourced directly through Festo's authorized channel; no grey market, no counterfeits.
Ready stock of popular DSNU-S variants at our Coimbatore store — common bore and stroke combinations are typically available for same-day or next-day dispatch.
Expert application support — not sure which stroke or bore suits your force requirement? Call our team at +91 98422 47546 and we'll work through the selection with you.
Compatible Accessories
Mounting accessories — foot brackets, flange mounts, and clevis joints for the DSNU-S 12 mm series (required, not included with this base cylinder)
Proximity switches — Festo SME/SMT series switches compatible with the cylinder's T-slot or band-mount position detection
M5 push-in fittings — Festo QSM-M5 series or equivalent for clean, leak-free tube connection
4 mm or 6 mm polyurethane tubing — compatible with M5 push-in fittings for this cylinder
Flow control valves — Festo GRLA or VFOE series M5 one-way flow controls for speed regulation on advance and return strokes
Clevis and rod end joints — for angular misalignment tolerance and load transfer at the piston rod M6 thread
All accessories are available from stock. Ask us to bundle your complete cylinder assembly — fittings, tubing, switches, and mounting hardware — in a single order.
