Airtac MI25~40 Stainless Steel Mini Cylinder MI25X35U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X35U is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 35mm 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
- Stroke35 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 MI25X35U
Generating 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 pairs with a short 35 mm stroke and a 90-degree U back cover, routing the 1/8" port sideways for compact machine integration. Its stainless barrel and piston rod naturally shrug off mild corrosion, giving it a real edge over painted-steel alternatives in damp or washdown environments.
Because the standard ISO 6432 mounting interface applies to this Ø25 bore, the cylinder drops directly into standard mini-cylinder brackets and clevises. In practical terms, plan for about 147 N of actual work at 0.5 MPa, which means it lifts roughly 12.5 kg vertically with a safe 2:1 margin. Fixed TPU bumper pads absorb the stroke-end impact, and since this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X35U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X35U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 35 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 MI25X35U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×35 | 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 MI25X35U Is Used
Package Diverters
Drives a 35 mm stroke diverter arm on a packaging conveyor, using its 245.3 N push force to reliably reroute heavy cartons at high speed.
Lab Sample Ejectors
Ejects processed specimen trays from a damp testing station, where the stainless steel rod prevents mild corrosion from repeated chemical washdowns.
Pneumatic Valve Actuation
Pilots a heavy-duty process valve in a tight pipe rack, leveraging the 90-degree U back cover to keep the 1/8" port neatly out of the axial line.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X35U the Right Cylinder?
When sizing this actuator, compare it against its neighbours: a Ø20 bore provides 157.0 N of push at 0.5 MPa, while stepping up to a Ø32 yields 402.2 N. This Ø25 model hits a sweet spot at 245.3 N. Keep in mind that venting the air or centering the valve causes the piston to drift—a plain cylinder cannot hold a load mid-stroke, so add an external rod lock or pilot check valve if you need strict position holding. The 90-degree U rear cover is ideal when axial port alignment is impossible, and you can utilize LB foot, FA flange, SDB pivot, or TC trunnion mounts. For faster cycle speeds without end-thud, consider the MIC variant with its adjustable air cushion.
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 MI25X35U 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.
Yes, the Ø25 bore uses the ISO 6432 mounting interface, so it fits standard mini-cylinder clevises and brackets. However, because this SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG switches; you must specify an -S variant for position sensing.
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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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