Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40CM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40CM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 40mm 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
- Stroke40 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 MI25X40CM
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust actuation in tight spaces. The riveted barrel and rod resist mild corrosion, making it superior to painted alternatives in damp environments. With a 40 mm stroke, it yields a practical safe working load of roughly 147 N, which translates to lifting about 12.5 kg vertically with a 2:1 safety margin.
Built to ISO 6432 mounting dimensions, the Ø25 body drops directly into standard mini-cylinder brackets and clevises. This specific SKU features a CM round rear cover and uses a 1/8 inch port. It relies on fixed TPU bumper pads to decelerate the stroke end. Note that because this model lacks the -S suffix, it cannot accept CMSG, DMSG, or EMSG magnetic sensors.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40CM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40CM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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 MI25X40CM
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 MI25X40CM Is Used
Stamping Pin Ejection
Uses the 245.3 N push force at 0.5 MPa to eject small stamped metal pins from a die plate reliably.
Bottle Diverter Gate
Actuates a short 40 mm diverter arm on a packaging line, leveraging the stainless build for washdown resistance.
Carton Flap Folding
Folds corrugated box flaps prior to taping, where the 12.5 kg vertical lift capacity easily overcomes cardboard resistance.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40CM the Right Cylinder?
When sizing this 25 mm bore, the smaller Ø20 generates 157.0 N of push at 0.5 MPa, while the larger non-ISO Ø32 provides 402.2 N. This makes the MI25X40CM the ideal middle ground for medium-force clamping. The 40 mm stroke keeps the rod compact, minimizing side-load bending risks. If your process requires position feedback, select the -S magnet version instead, as this base unit cannot host a sensor.
The CM round end cover dictates a specific rear mounting orientation. Remember that venting the air or centering the valve causes the piston to drift, as the TPU bumpers only soften end impacts rather than locking the load. For suspended loads, integrate 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 MI25X40CM FAQ
At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N. At 0.7 MPa the push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port size is 1/8 inch.
No, because this SKU lacks the -S suffix, it has no internal magnet and cannot host CMSG, DMSG, or EMSG switches. You must order the -S variant for position sensing. It uses fixed TPU bumper pads, not an adjustable air cushion.
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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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