Airtac MI25~40 Stainless Steel Mini Cylinder MI32X50SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X50SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 50mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke50 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 MI32X50SU
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X50SU is a robust double-acting round-body mini cylinder built for demanding actuation. Its stainless-steel barrel and piston rod shrug off mild corrosion, making it highly suitable for damp production zones or washdown environments where painted steel alternatives quickly degrade. The riveted construction maintains a compact profile while housing fixed TPU bumper pads that absorb end-of-stroke impacts. Equipped with a 1/8" port and a U-type 90-degree rear cover, this unit also features a built-in piston magnet (-S) for seamless integration with CMSG, DMSG, or EMSG position switches.
For practical sizing, plan for a safe working load of roughly 241 N, which represents about sixty percent of the 0.5 MPa push rating. In vertical lifting scenarios, this translates to hoisting approximately 20.5 kg safely with a 2:1 margin. The Ø32 bore places it outside the ISO 6432 mounting standard, classifying it simply as a heavy-duty round-body mini cylinder, yet it retains versatile mounting options like LB foot, FA flange, and TC trunnion brackets.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X50SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X50SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 50 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 MI32X50SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×50 | 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 MI32X50SU Is Used
Stamping Pin Ejection
Utilizes the 402.2 N push force at 0.5 MPa to reliably eject stamped metal pins from a die block, preventing part jamming in high-speed stamping presses.
Heavy Package Diverting
Deploys the 50 mm stroke to push heavier cardboard cartons across a transfer plate, where the stainless build withstands dusty and humid warehouse conditions.
Pallet Stopper Gate
Acts as a robust pneumatic stop on a roller conveyor to halt loaded pallets, using its 20.5 kg vertical lift equivalent capacity to manage substantial inertia safely.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X50SU the Right Cylinder?
When sizing this 32 mm bore actuator, compare its 402.2 N push force at 0.5 MPa against the adjacent options: a 25 mm bore yields 245.3 N, while stepping up to a 40 mm bore provides 628.3 N. This makes the MI32X50SU the optimal middle ground for medium-force clamping and lifting. The integrated magnet (-S) is essential if your control system requires CMSG, DMSG, or EMSG electronic or reed sensors for end-position confirmation. Furthermore, the U-type back cover provides a 90-degree port orientation, easing hose routing in tight machinery enclosures.
Remember that a standard double-acting cylinder relies entirely on continuous air pressure to maintain its position. If air is lost or the directional valve is centred, the piston will drift, as the fixed TPU bumpers only decelerate the stroke end and act as neither a brake nor a lock. To suspend a load safely during an air failure, incorporate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 MI32X50SU FAQ
The MI32X50SU features a 1/8" air port and generates 402.2 N push / 345.6 N pull at 0.5 MPa, and 563 N push / 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
No, the piston will drift if air is lost or the valve is centred. The fixed TPU bumper pads only decelerate the rod near the stroke end and do not function as a locking brake. You must use an external rod lock or pilot check valve to hold a load.
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Genuine AirTAC parts produced by AirTAC factory.
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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