Airtac MI25~40 Stainless Steel Mini Cylinder MI25X450U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X450U is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 450mm 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
- Stroke450 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 MI25X450U
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles substantial work within a compact footprint. The Ø25 bore uses a 1/8" port and a 10 mm rod with an M10x1.25 male thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. The riveted round body includes fixed TPU bumper pads that soften stroke-end impact.
For practical sizing, plan for about 147 N of real work at 0.5 MPa, which lets you lift a 12.5 kg part vertically with a 2:1 safety margin. The U back cover provides a 90-degree port orientation for tight installations. Because this SKU lacks a magnet, it cannot accept CMSG, DMSG or EMSG switches; you would need the -S variant for position sensing.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X450U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X450U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 450 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 MI25X450U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×450 | 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 MI25X450U Is Used
Package Diverter Gate
Shifts heavy cardboard cartons on a sorting line using the 245.3 N push force, with the 90-degree U cover keeping the 1/8" port tidy against the frame.
Textile Loom Tensioner
Moves a fabric guide bar through a 450 mm stroke, relying on the stainless rod to withstand humid manufacturing environments without corroding.
Pallet Labelling Arm
Extends a label applicator across a pallet width, using the ISO 6432 mounting dimensions to fit standard clevis brackets on the gantry.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X450U the Right Cylinder?
When sizing this 25 mm bore, the smaller Ø20 generates 157 N of push at 0.5 MPa, while the larger Ø32 provides 402 N, letting you step up if the load increases. A 450 mm stroke is substantial for a mini cylinder, so ensure your mounting arrangement—whether LB foot, FA flange, SDB pivot or TC trunnion—prevents rod side-loading and bending. The ISO 6432 mounting interface drops directly into standard mini-cylinder brackets and clevises.
Remember that a plain MI does not hold its load if air pressure drops or the valve is centred; the piston will drift. The fixed TPU bumpers only decelerate the stroke end rather than acting as a brake. To suspend a load safely, 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 MI25X450U FAQ
This 25 mm bore cylinder has a 1/8" port. 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 the pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG or EMSG switches. You would need the MI25X450U-S variant to enable position sensing. The cylinder uses fixed TPU bumper pads to decelerate the stroke end, rather than an adjustable air cushion.
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