Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125U is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 125mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke125 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 MI32X125U
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavier automation tasks with a 125 mm stroke. The stainless-steel barrel and piston rod resist mild corrosion, making it highly suitable for damp production areas where painted steel quickly degrades. It features a 1/4" air port and a U-type back cover that orients the port 90 degrees to streamline hose routing in tight machine cells.
Because the fixed TPU bumper pads only decelerate the stroke end rather than acting as an adjustable air cushion, you should plan for a safe working load of roughly 241 N. This translates to lifting about 20.5 kg vertically with a 2:1 safety margin, letting you match the actuator to real part weights. Note that this specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125U |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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 MI32X125U
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 MI32X125U Is Used
Package Diverting Gate
Shifts heavy cardboard cartons on a sorting line using its 402.2 N push force, while the stainless construction withstands humid packing environments.
Parts Press Fixture
Pushes lightweight aluminum housings into a press die at 125 mm stroke, safely operating within the 241 N working load limit.
Textile Loom Tensioner
Actuates a fabric tensioning arm where the 90-degree U cover keeps pneumatic tubing neatly out of the moving mechanism.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125U the Right Cylinder?
When sizing this 32 mm bore, compare it directly against its neighbours: the Ø25 generates 245.3 N of push at 0.5 MPa, while the Ø40 steps up to 628.3 N. If your payload exceeds the 20.5 kg vertical lift capacity, moving to the larger bore is advisable. For high-speed cycles that generate significant kinetic energy, consider the MIC variable air cushion variant instead of relying on the standard fixed TPU bumpers.
The U-type rear cover provides a 90-degree port orientation for compact installations. Remember that venting the air causes the piston to drift, so a plain cylinder will not hold a vertical load if pressure drops; integrate an external pilot-operated check valve or a rod lock for fail-safe positioning.
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 MI32X125U FAQ
At 0.5 MPa it provides 402.2 N push and 345.6 N pull. At 0.7 MPa it provides 563 N push and 483.8 N pull. The theoretical maximum force is 82 kgf at 1.0 MPa. This 32 mm bore model uses a 1/4" air port and a Ø12 mm piston rod with an M10x1.25 male thread.
No, this specific SKU does not include a magnet, so CMSG, DMSG or EMSG switches cannot be used. You must order the -S variant (MI32X125SU) for position sensing. The unit relies on fixed TPU bumper pads to decelerate at stroke end, not an adjustable air cushion.
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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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