Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 400mm 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
- Stroke400 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 MI25X400SCM
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles substantial work within a compact riveted round-body format. The 25 mm bore operates on 1/8" ports and features a built-in magnet for position sensing alongside a round CM back cover. Its stainless barrel and Ø10 mm rod naturally resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. Because the 400 mm stroke is long, plan for about 147 N of actual work at 0.5 MPa rather than the absolute maximum to account for friction and side loads. This equates to safely lifting a 12.5 kg mass vertically with a 2:1 safety margin.
The integrated piston magnet allows direct mounting of CMSG, DMSG or EMSG switches for end-of-stroke detection. Fixed TPU bumper pads absorb the impact at the stroke extremes, decelerating the motion smoothly across the 30-800 mm/s speed range. The Ø25 size adheres to ISO 6432 mounting interface dimensions, meaning it drops directly into standard mini-cylinder brackets and clevises without custom hardware.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 400 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 MI25X400SCM
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×400 | 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 MI25X400SCM Is Used
Package Diverting Gate
Actuates a routing flap on a 400 mm stroke to redirect 12 kg cartons between sorting lanes, utilising the 245 N thrust and ISO 6432 bracket compatibility.
Vacuum Lifter Descent
Lowers a suction cup assembly to pick up sheet materials, relying on the stainless construction for moisture resistance and the CMSG sensors for position feedback.
Textile Loom Tensioner
Maintains precise tensioning arms over a long travel distance, where the fixed TPU bumpers absorb rapid stroke-end impacts without requiring adjustment.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCM the Right Cylinder?
When sizing this 25 mm bore, stepping down to a 20 mm cylinder drops the 0.5 MPa push force to 157 N, while moving up to a 32 mm bore raises it significantly to 402 N. Choose this model when your application specifically requires that 245 N thrust class over a 400 mm travel distance. At this length, carefully manage side loading to prevent rod bending, as long strokes amplify guide wear. The CM round end back cover offers specific rear-porting and mounting geometry, so verify your spatial clearances.
Remember that a standard double-acting cylinder drifts if air pressure is lost or the directional valve is centred; the TPU bumpers only soften the end-of-stroke impact and do not function as a braking lock. If your machine must hold a vertical load during an emergency stop, add an external pilot-operated check valve or a dedicated rod lock. The included -S magnet enables reed or electronic sensing, whereas non-magnet variants cannot accept switches.
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 MI25X400SCM FAQ
This 25 mm bore cylinder features 1/8" ports and an M10x1.25 male rod thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical maximum of 50 kgf at 1.0 MPa.
It uses a round CM back cover, but a standard double-acting cylinder cannot hold a load if air is lost; it will drift. The fixed TPU pads only decelerate the stroke end. You must add an external rod lock or pilot check valve for load holding.
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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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