Airtac MI25~40 Stainless Steel Mini Cylinder MI25X425SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X425SU is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 425mm 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
- Stroke425 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 MI25X425SU
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 barrel and Ø10 mm rod shrug off mild corrosion, making it highly suitable for damp washdown environments where painted units fail. A 425 mm travel length provides excellent reach, and the built-in piston magnet (-S) directly supports CMSG, DMSG, and EMSG electronic or reed switches for precise end-position detection.
For practical sizing, plan for a safe working load of roughly 147 N rather than pushing the limit, which means it can comfortably lift a 12.5 kg part vertically with a 2:1 safety margin. The U-style back cover mounts at a 90-degree angle to streamline plumbing on tight machines. Fixed TPU bumper pads absorb the impact at stroke extremes to protect the mechanism, and the 1/8" port matches the standard airflow requirements for this bore size.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X425SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X425SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 425 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 MI25X425SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×425 | 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 MI25X425SU Is Used
Diverting Heavy Packages
Uses the 245.3 N thrust to push heavy cartons reliably across a transfer section without stalling under friction.
Lab Sample Elevation
Raises sample trays weighing up to 12.5 kg through the 425 mm stroke, leveraging the stainless build for sterile settings.
Film Roll Actuation
Shifts packaging film rolls laterally on packaging machinery, relying on the U-style back cover for compact 90-degree mounting.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X425SU the Right Cylinder?
When sizing this 25 mm bore unit, 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 to 402 N. Because this 425 mm stroke approaches the 500 mm maximum limit, ensure your mounting configuration prevents rod bending and side-loading forces. The ISO 6432 mounting interface allows seamless integration into standard mini-cylinder clevises and brackets.
Remember that venting the air supply causes the piston to drift, as the fixed bumpers only decelerate the end-of-stroke impact and do not function as a braking mechanism. To suspend a load safely during an air loss event, install an external pilot-operated check valve or a dedicated rod lock.
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 MI25X425SU FAQ
At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa it provides 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa, and the air port size is 1/8".
Yes, the -S suffix denotes a built-in magnet for CMSG, DMSG, and EMSG switches. However, it does not hold position if air is lost; the piston drifts. You must add an external rod lock or pilot check valve to suspend loads.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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