Airtac MI25~40 Stainless Steel Mini Cylinder MI32X25SR
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X25SR is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 25mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke25 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 MI32X25SR
Delivering 402.2 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work in compact spaces. The Ø32 bore operates with a 1/8" port and a Ø12 mm piston rod. Its riveted stainless construction resists mild corrosion and washdown, outperforming painted alternatives in damp environments. Equipped with an R axial-in rear cover, it routes plumbing cleanly along the axis.
The integrated piston magnet (-S) directly supports CMSG, DMSG, and EMSG position switches for precise end-of-stroke detection. Fixed TPU bumper pads absorb impact energy at the stroke extremes, operating smoothly across a 30-800 mm/s speed range. For practical sizing, plan for roughly 241 N of actual work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a safe 2:1 margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X25SR Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X25SR |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 25 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 MI32X25SR
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×25 | 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 MI32X25SR Is Used
Stamping Pin Ejection
Uses the 402.2 N push force to eject stamped metal pins from a die block rapidly over the 25 mm stroke.
Heavy Package Diversion
Deploys a heavy-duty diverter arm on a packaging line to sort dense cartons via the R axial-in port configuration.
Pallet Stop Gate
Acts as a robust pneumatic stop gate for loaded pallets, relying on the stainless body to endure industrial wear.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X25SR the Right Cylinder?
When sizing this 25 mm stroke actuator, compare it against adjacent bores: the Ø25 generates 245.3 N of push at 0.5 MPa, while the larger Ø40 provides 628.3 N. If your application exceeds the 241 N safe working load, stepping up to the Ø40 is advisable. Conversely, lighter duties can save space by dropping to the Ø25.
Because the base MI relies on air pressure to maintain position, the piston will drift if supply is lost or the valve is centered—the TPU bumpers only soften the end-of-stroke impact and act purely as deceleration pads, never as a locking mechanism. To suspend a load securely during an outage, fit an external rod lock or a pilot-operated check valve. For high-cycle automation requiring end-stroke speed tuning, consider the MIC variable cushion variant instead of these fixed pads.
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 MI32X25SR FAQ
This double-acting 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, increasing to 563 N push and 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in magnet compatible with CMSG, DMSG, and EMSG switches. However, it does not hold loads if air pressure drops; the piston drifts and the fixed TPU bumper pads only decelerate the stroke end. Use an external rod lock for position holding.
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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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