Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230U is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 230mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ25 mm
- Stroke230 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 MI25X230U
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work within a compact footprint. The Ø25 bore conforms to ISO 6432 mounting dimensions, so it drops directly into standard mini-cylinder brackets and clevises. Its riveted stainless barrel and rod shrug off mild corrosion, giving a real edge over painted alternatives in damp or washdown environments. Fixed TPU bumper pads absorb the impact at stroke extremes, decelerating the piston smoothly without the complexity of adjustable cushioning.
For practical sizing, plan for roughly 147 N of actual work at 0.5 MPa, which translates to lifting a 12.5 kg part vertically with a safe 2:1 margin. The 230 mm stroke is well within the 500 mm maximum for this bore, while the U-style back cover provides a 90-degree port orientation to simplify plumbing in tight machinery. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 230 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.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MI25X230U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×230 | 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 MI25X230U Is Used
Package Diverting Gate
Actuates a routing flap on a packaging line, using the 245.3 N push force to swing heavy cardboard cartons onto secondary tracks at high speed.
Pallet Component Pusher
Ejects stacked metal fixtures from an assembly pallet, relying on the 230 mm stroke to clear the work zone before the conveyor advances.
Textile Loom Tensioner
Shifts a yarn guide bar precisely in humid textile facilities, where the stainless steel barrel prevents mild corrosion from ambient moisture.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230U the Right Cylinder?
When sizing this unit, the neighbouring Ø20 bore provides 157 N of push at 0.5 MPa, whereas stepping up to the Ø32 yields 402.2 N, making the Ø25 the sweet spot for loads around 147 N. The 230 mm stroke is well within the 500 mm standard limit, though at this extension you should watch for side loads to prevent rod bending. The 1/8" port matches the bore flow rate perfectly.
Remember that venting air or centering the valve causes the piston to drift, as the TPU bumpers only soften the end of travel rather than locking the rod. To suspend a load safely mid-stroke, fit an external rod lock or a pilot-operated check valve. If your assembly requires position feedback, select the -S magnet version to enable CMSG, DMSG or EMSG sensors.
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 MI25X230U FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N. At 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port is 1/8" with a male M10x1.25 rod thread.
No, this specific SKU lacks the internal magnet, so it cannot accept CMSG, DMSG or EMSG switches. You must order the -S variant for position sensing. It uses fixed TPU bumper pads for end-of-stroke deceleration and conforms to ISO 6432 mounting dimensions.
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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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