Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30SR
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30SR is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 30mm 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
- Stroke30 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 MI25X30SR
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust actuation in tight spaces. The Ø25 mm bore uses a 1/8" port and an M10x1.25 male rod thread, while the compact 30 mm stroke suits short-travel clamping and ejecting tasks. An integrated piston magnet (-S) allows direct mounting of CMSG, DMSG or EMSG switches for position sensing.
Built with a riveted stainless barrel and rod, it resists mild corrosion and washdown better than painted alternatives. Its ISO 6432 mounting dimensions mean it drops straight into standard mini-cylinder brackets and clevises. The R back cover supplies an axial-in port orientation for neat tubing. Plan for roughly 147 N of actual work at 0.5 MPa, or expect it to lift about 12.5 kg vertically with a 2:1 safety margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30SR Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30SR |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 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 MI25X30SR
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×30 | 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 MI25X30SR Is Used
Short-Stroke Part Ejection
Uses the 245.3 N push force at 0.5 MPa to rapidly eject machined aluminium components from a CNC fixture before the conveyor engages.
Carton Flap Folding
Leverages the 30 mm stroke and R axial port to fold corrugated cardboard flaps cleanly in a compact packaging line where space is restricted.
Belt Diverting Gate
Actuates a lightweight sorting gate on a washdown conveyor, relying on the stainless steel construction to resist moisture and detergent spray.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30SR the Right Cylinder?
When sizing this actuator, the Ø20 bore below provides 157 N of push at 0.5 MPa, whereas the larger Ø32 offers 402 N if you need substantially more power. Because the 30 mm stroke is very short, side-load and rod-bending stresses are minimal, but ensure the front nose is aligned squarely to the load. The fixed TPU bumper pads absorb stroke-end impact but do not function as an adjustable air cushion.
Remember that a standard double-acting cylinder drifts when air is removed or the valve is centred, as the bumpers only decelerate the end of travel rather than locking the rod. If your application must hold a vertical load during an air-loss event, fit an external rod lock or a pilot-operated check valve. The -S magnet enables reed or electronic sensors, and you can utilise LB foot, FA flange, SDB pivot or TC trunnion mounts to suit your frame.
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 MI25X30SR FAQ
This Ø25 mm bore cylinder features a 1/8" port and an M10x1.25 rod thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, increasing to 343.4 N push and 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
No, the fixed TPU bumper pads only decelerate the stroke end and do not lock the rod; you need an external rod lock or pilot check valve to hold a load on air loss. The -S suffix denotes a built-in magnet, allowing the use of CMSG, DMSG or EMSG switches for position detection.
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Covers non-human-caused product damage.
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