Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 15mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke15 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SU
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X15SU is a compact round-body mini cylinder built for heavy-duty actuation in tight spaces. The stainless-steel barrel and rod shrug off mild corrosion, making it highly suitable for damp or washdown-prone environments where painted steel alternatives quickly degrade. A built-in piston magnet allows seamless integration with CMSG, DMSG, or EMSG reed and electronic switches for precise position detection.
This double-acting actuator features a brief 15 mm stroke and a 1/8" port, driven by a robust Ø12 mm piston rod. It relies on fixed TPU bumper pads to decelerate the impact at stroke ends rather than adjustable air cushions. For real-world sizing, plan for a safe working load of roughly 241 N, which translates to lifting about 20.5 kg vertically with a 2:1 safety margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 15 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G. Note: the Ø32 bore is a larger, non-ISO-6432 size.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×15 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SU Is Used
Stamping Pin Ejection
Short 15 mm stroke provides rapid pin ejection in automated metal stamping presses, using the 402.2 N push force to clear parts reliably.
Pneumatic Clamp Actuation
Secures heavy workpieces in machining fixtures where a compact footprint is required, taking advantage of the U cover for tidy 90-degree port routing.
Carton Flap Folding
Drives stiff cardboard flaps on high-speed packaging lines, relying on the stainless construction to withstand humid or washdown cleaning cycles.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SU the Right Cylinder?
Choosing this 32 mm bore means you require substantial force in a very short travel distance. If your application needs less punch, stepping down to the 25 mm bore yields 245.3 N of push at 0.5 MPa; conversely, moving up to the 40 mm bore provides 628.3 N for heavier resistance. The U back cover provides a 90-degree port orientation, which helps route hoses cleanly in confined machinery.
Because the stroke is only 15 mm, side-load stress on the rod remains minimal, though you should still ensure rigid mounting. Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered—the TPU bumpers only soften the end-of-stroke impact and act purely as decelerators, never as a holding brake. To suspend a load safely during an outage, fit an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SU FAQ
This 32 mm bore cylinder features a 1/8" port and a Ø12 mm rod. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, 563 N push and 483.8 N pull at 0.7 MPa, with a theoretical maximum of 82 kgf at 1.0 MPa.
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper pads only decelerate the stroke end and do not function as a locking brake. You must add an external rod lock or pilot check valve to hold a suspended load.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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