Airtac MI25~40 Stainless Steel Mini Cylinder MI25X220U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X220U is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 220mm 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
- Stroke220 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 MI25X220U
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 25 mm bore pairs a 10 mm piston rod with a 1/8" port and M10x1.25 male thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. Fixed TPU bumper pads absorb stroke-end impact, while the riveted construction keeps the body light.
Because the theoretical output hits 50 kgf at 1.0 MPa, plan for a safe working load of roughly 147 N (about 60% of the 0.5 MPa rating) to account for friction and air losses. In vertical lifting, this translates to hoisting about 12.5 kg with a 2:1 safety margin. The 220 mm stroke falls well within the 500 mm maximum, and the U back cover provides a 90-degree port orientation for tight machinery layouts.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X220U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X220U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 220 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 MI25X220U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×220 | 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 MI25X220U Is Used
Package Diverter Arm
Actuates a routing gate on a packaging line, using the 245.3 N push force to swing heavy cardboard cartons into secondary lanes.
Vertical Parts Press
Pushes lightweight bearings into housings on an assembly fixture, relying on the 220 mm stroke to clear the tooling during loading.
Textile Loom Tensioner
Adjusts a fabric guide roller in a humid production area, where the stainless rod prevents mild corrosion from affecting movement.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X220U the Right Cylinder?
When sizing this 25 mm bore, the adjacent Ø20 generates 157.0 N push at 0.5 MPa, whereas stepping up to the Ø32 yields 402.2 N. Choose this model when your required force sits comfortably above 150 N but below 300 N. The 220 mm stroke is standard, though at this length you should ensure the rod is guided to prevent side-loading and premature seal wear. This SKU lacks the -S magnet, meaning it cannot accept CMSG, DMSG, or EMSG position switches; add the -S variant if your control system requires sensing.
For mounting, the ISO 6432 interface allows direct integration into standard mini-cylinder brackets and clevises. Remember that venting the air supply causes the piston to drift, as the TPU pads only decelerate the stroke end rather than locking the rod. To suspend a load safely mid-stroke, fit 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 MI25X220U FAQ
At 0.5 MPa, the push force is 245.3 N and the pull force is 206.1 N. At 0.7 MPa, push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. It uses a 1/8" air port and a 10 mm rod with an M10x1.25 male thread.
No, this specific SKU does not include a magnet. To use CMSG, DMSG, or EMSG switches, you must select the -S variant. Additionally, the U back cover orients the port 90 degrees, and the ISO 6432 mounting dimensions allow it to drop into standard mini-cylinder brackets.
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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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