Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SU is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 300mm 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
- Stroke300 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 MI25X300SU
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles a 300 mm travel range with precision. The Ø25 mm bore uses a 1/8" port and a Ø10 mm piston rod, while the rolled and riveted barrel shrugs off mild corrosion better than painted alternatives in damp or washdown settings. Because the bore falls within the Ø8-Ø25 range, it conforms to ISO 6432 mounting dimensions, dropping smoothly into standard mini-cylinder brackets and clevises.
For real-world sizing, plan for a safe working load of roughly 147 N (about 60 percent of the 0.5 MPa rating) to account for friction and dynamics. In vertical lift tasks, that translates to hoisting about 12.5 kg safely with a 2:1 margin. The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position detection, while fixed TPU bumper pads decelerate the stroke ends. The U back cover provides a 90-degree port and mounting orientation for tight machinery layouts.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MI25X300SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MI25X300SU Is Used
Package Diverters
Pushes parcels weighing up to 12.5 kg laterally across sorting belts using the 300 mm stroke and 245.3 N of thrust at 0.5 MPa.
Vertical Lift Gates
Raises and lowers lightweight access doors or safety covers, relying on the 90-degree U back cover for compact pivot mounting.
Lab Sample Handling
Moves stainless steel sample trays in damp or mildly corrosive environments where the riveted barrel resists washdown chemicals.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SU the Right Cylinder?
When sizing this 300 mm stroke model, compare it against adjacent bores: a Ø20 generates 157.0 N of push at 0.5 MPa, whereas a Ø32 jumps to 402.2 N. Choose the Ø25 when your application sits comfortably in the middle of that range. If you need to hold a load vertically when air is removed or the valve is centered, remember this cylinder will drift; the TPU bumpers only soften the end of stroke and act as neither a brake nor a lock. An external rod lock or pilot-operated check valve is required for secure positioning. The 300 mm stroke is well within the 500 mm maximum for this bore, but long strokes demand careful alignment to prevent rod bending and premature seal wear from side loads. The U rear cover simplifies 90-degree mounting, and the -S magnet enables reed or electronic sensor tracking.
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 MI25X300SU 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 is 1/8" and the male rod thread is M10x1.25.
No, it features fixed TPU bumper pads that decelerate the stroke end but cannot be adjusted like an air cushion. It also does not hold its load if air pressure is lost; the piston will drift. For load holding, use an external rod lock or pilot check valve.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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