Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230SU is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 230mm 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
- Stroke230 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 MI25X230SU
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust actuation tasks. The riveted stainless barrel and Ø10 mm rod shrug off mild corrosion, making it far superior to painted alternatives in damp washdown environments. Because this bore falls within the Ø8-Ø25 range, it features an ISO 6432 mounting interface, dropping directly into standard mini-cylinder brackets and clevises.
The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing, while the U back cover provides a 90-degree port orientation for tight layouts. For practical sizing, plan for roughly 147 N of real work at 0.5 MPa, which translates to lifting about 12.5 kg vertically with a 2:1 safety margin. Fixed TPU bumper pads absorb the end-of-stroke impact across the 230 mm travel.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 230 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 MI25X230SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×230 | 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 MI25X230SU Is Used
Package Diverting Gate
Actuates a routing flap on a packaging conveyor, using the 245.3 N push force to redirect heavy cartons into secondary lanes.
CNC Fixture Clamping
Secures aluminium housings during machining operations, where the stainless build resists cutting fluid splashes.
Vertical Parts Elevator
Lifts approximately 12.5 kg bins between conveyor tiers, relying on the 230 mm stroke to bridge the height gap.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X230SU the Right Cylinder?
When sizing this 25 mm bore, compare it against its neighbours: a 20 mm bore yields 157.0 N push at 0.5 MPa, whereas stepping up to a 32 mm bore provides 402.2 N. This model includes the -S magnet for electronic or reed sensors and the U 90-degree rear cover. The 230 mm stroke is well within the 500 mm maximum, but at this length side loads can bend the rod—ensure rigid guidance for the payload. Air ports are 1/8".
Remember that fixed TPU pads only decelerate the stroke end; they do not function as an adjustable air cushion. Furthermore, a standard double-acting cylinder drifts when air pressure is lost or the valve is centred. If your application must hold a vertical load securely during an air failure, 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 MI25X230SU 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. The air port size is 1/8" and the male rod thread is M10x1.25.
No, the piston will drift if air is lost or the valve is centred. The fixed TPU bumper pads only decelerate the stroke end and do not act as a brake. For vertical load holding, you must use an external rod lock or a pilot-operated 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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