Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCA
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCA 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 MI25X400SCA
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles demanding 400 mm travel tasks. The Ø25 mm bore uses a 1/8" port and an M10x1.25 male rod thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted-steel alternatives in damp or washdown settings. Built-in fixed TPU bumper pads soften stroke-end impact, while the riveted construction keeps the body compact.
Plan for roughly 147 N of actual work at 0.5 MPa, which safely lifts about 12.5 kg vertically with a 2:1 margin. The -S suffix means a piston magnet is included for CMSG, DMSG or EMSG reed and electronic switches. Because it features a CA pivot clevis, the rear mounting allows articulated movement. This bore conforms to ISO 6432 mounting dimensions, dropping easily into standard mini-cylinder brackets.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCA Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCA |
|---|---|
| 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 MI25X400SCA
| 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 MI25X400SCA Is Used
Pivoting Diverter Gate
Uses the CA clevis to swing a heavy packaging lane guide through 400 mm of travel, relying on the 245.3 N push force to move loaded cardboard flats.
Vertical Parts Lift
Raises lightweight plastic totes 400 mm in a humid storeroom, where the stainless rod shrugs off condensation and lifts roughly 12.5 kg safely.
Welding Shield Actuator
Extends a heat shield on a robotic cell, using the -S magnet and a DMSG switch to confirm the 400 mm stroke position before the arc strikes.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400SCA the Right Cylinder?
When sizing this 245.3 N (0.5 MPa) unit, stepping down to a Ø20 bore yields 157.0 N, whereas a Ø32 bore provides 402.2 N. At 400 mm of travel, the Ø10 mm rod needs careful alignment to prevent side-loading and premature bending. The CA rear clevis suits pivoting loads but ensure the pin is greased. For high-speed cycles generating significant kinetic energy, consider the MIC variable cushion variant instead of these fixed bumper pads.
Remember that venting the air or centering the valve causes the piston to drift; the bumpers only decelerate the end of stroke and do not act as a brake. To suspend a load safely during an air loss event, install 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 MI25X400SCA 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 the pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. This Ø25 mm bore features a 1/8" air port and a 10 mm piston rod.
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper pads only decelerate the stroke end and do not function as a locking brake. To maintain a vertical position, you must add an external rod lock or a pilot-operated check valve.
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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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Most inquiries answered within 7-8 hours.
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