Airtac MI25~40 Stainless Steel Mini Cylinder MI25X45SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X45SU is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 45mm 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
- Stroke45 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 MI25X45SU
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work in tight spaces. The Ø25 mm bore uses a 1/8" port and an M10x1.25 male rod thread. Its riveted stainless barrel and rod shrug off mild corrosion, giving a real edge over painted alternatives in damp or washdown environments. Because it carries the -S suffix, a built-in piston magnet is ready for CMSG, DMSG or EMSG position switches.
For practical sizing, plan for about 147 N of real work at 0.5 MPa, which means it can comfortably lift a 12.5 kg part vertically with a 2:1 safety margin. The U-style back cover provides a 90-degree port orientation to simplify plumbing. Fixed TPU bumper pads absorb the impact at stroke extremes, and the body conforms to ISO 6432 mounting dimensions for straightforward bracket integration.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X45SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X45SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 45 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 MI25X45SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×45 | 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 MI25X45SU Is Used
Packaging Diverter
Pushes light cartons off a main packaging line using its 245.3 N thrust, with the U cover keeping airlines neatly tucked away.
Textile Loom Tensioner
Maintains consistent tension on yarn guides in humid textile facilities where the stainless barrel prevents mild corrosion.
Pallet Tag Applicator
Extends 45 mm to press shipping labels onto pallet loads, using the -S magnet to confirm stroke end for the control PLC.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X45SU the Right Cylinder?
When sizing this 45 mm stroke unit, the neighbouring Ø20 bore generates 157.0 N of push at 0.5 MPa, while stepping up to the Ø32 yields 402.2 N, so the Ø25 hits a useful 245.3 N middle ground. If your machine loses air or the valve centres, the piston will drift; the bumpers only soften the end of travel rather than locking the rod, so add an external rod lock or pilot check valve for suspended loads. The -S magnet pairs directly with CMSG, DMSG and EMSG sensors, and the U rear cover dictates a 90-degree port exit. With a short 45 mm stroke, side-load stress on the rod remains minimal.
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 MI25X45SU FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N. At 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port is 1/8".
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. Use an external rod lock or pilot check valve to hold suspended loads.
Authorized Export Seller
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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