Airtac MI25~40 Stainless Steel Mini Cylinder MI32X240SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X240SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 240mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke240 mm
- Port size1/4"
- 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 MI32X240SU
Delivering 402.2 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work across its 240 mm stroke. The riveted construction pairs a corrosion-resistant barrel and rod with a 1/4 inch port and a U-type 90-degree rear cover, making it well suited to damp or washdown environments where painted bodies fail. Fixed TPU bumper pads absorb the end-of-stroke impact without offering adjustable cushioning.
For practical sizing, plan for roughly 241 N of real work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a 2:1 safety margin. Because the code includes an S, a built-in piston magnet is present, allowing direct mounting of CMSG, DMSG or EMSG reed and electronic switches for position sensing.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X240SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X240SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 240 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| 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 MI32X240SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×240 | 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 MI32X240SU Is Used
Package Diverting Gate
Actuates a heavy routing flap on a logistics conveyor, using the 240 mm stroke to shift parcels cleanly between sorting lanes.
Container Lid Press
Applies up to 241 N of safe working force to clamp and seal industrial tote lids during automated packaging cycles.
Washdown Component Ejector
Pushes machined stainless parts out of a damp processing cell, relying on the corrosion-resistant barrel to withstand daily water spray.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X240SU the Right Cylinder?
When sizing this 32 mm bore, the smaller Ø25 generates 245.3 N of push at 0.5 MPa, while the larger Ø40 provides 628.3 N, giving you clear boundaries if your load shifts. The 240 mm stroke is well within the 500 mm maximum, but at this extension length you must carefully manage side loading to prevent rod bending and premature seal wear. The U-type back cover provides a 90-degree port and mounting orientation to fit tight machinery frames.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the directional valve is centred; the TPU bumpers only decelerate the piston near the stroke end and act purely as impact absorbers, never as a holding brake. If your application requires the load to stay fixed during an air loss event, install 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 MI32X240SU FAQ
This 32 mm bore cylinder uses a 1/4 inch port and a 12 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 force of 82 kgf at 1.0 MPa.
Yes to sensors, no to adjustable cushions. The S in the model code means it has a built-in magnet for CMSG, DMSG or EMSG switches. However, it relies on fixed TPU bumper pads for end-of-stroke deceleration; for adjustable air cushioning you would need the MIC variant.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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