Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250U is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 250mm 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
- Stroke250 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 MI25X250U
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 riveted stainless barrel and Ø10 mm rod shrug off mild corrosion, making it far superior to painted alternatives in damp washdown environments. It features a 1/8" air port and a 90-degree U back cover for perpendicular mounting flexibility.
Because it conforms to ISO 6432 mounting dimensions, the unit drops directly into standard mini-cylinder brackets and clevises, simplifying retrofits. Fixed TPU bumper pads absorb end-of-stroke impact without the tuning required by adjustable cushions. For practical sizing, plan for roughly 147 N of actual work at 0.5 MPa, which translates to safely lifting a 12.5 kg load vertically against gravity.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MI25X250U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×250 | 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 MI25X250U Is Used
Package Diverting Gate
Actuates a routing flap on a logistics conveyor, using the 245.3 N thrust to push heavy cartons smoothly into secondary sorting lanes.
Vertical Flap Folding
Drives a folding arm on a corrugated box erector, where the 250 mm stroke provides the reach needed to tuck large end flaps securely.
Textile Loom Tensioning
Maintains consistent yarn tension in a humid manufacturing environment, leveraging the stainless construction to resist moisture degradation.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250U the Right Cylinder?
When sizing this 25 mm bore, the neighbouring 20 mm option yields 157 N of push at 0.5 MPa, while the larger 32 mm provides 402 N, letting you step up or down precisely to match your 245.3 N requirement. The 250 mm stroke is well within the 500 mm maximum standard stroke limit, though at this extension you should carefully manage side loading to prevent rod bending and premature seal wear. This specific SKU lacks the -S magnet, meaning it cannot accept CMSG, DMSG or EMSG position switches; choose the -S variant if your control system requires electronic end-of-stroke detection. Remember that venting the air supply causes the piston to drift, as the TPU bumpers only decelerate the stroke end rather than locking the load in place.
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 MI25X250U FAQ
At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa it delivers 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port size is 1/8".
This SKU lacks a magnet, so it cannot accept CMSG, DMSG or EMSG switches; you need the -S variant for sensing. Additionally, it does not hold position on air loss, as the fixed TPU bumpers only decelerate the stroke end rather than acting as a brake.
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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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