Airtac MI25~40 Stainless Steel Mini Cylinder MI25X50U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X50U is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 50mm 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
- Stroke50 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 MI25X50U
Delivering 245.3 N of push force at 0.5 MPa, the AirTAC MI25X50U is a robust double-acting round-body mini cylinder built for demanding actuation. Its stainless-steel barrel and piston rod shrug off mild corrosion, making it highly suitable for damp production zones where painted steel or aluminium bodies degrade. The Ø25 bore conforms to ISO 6432 mounting dimensions, ensuring it drops directly into standard mini-cylinder brackets and clevises without redesigning your fixture.
Equipped with fixed TPU bumper pads, this riveted construction decelerates the piston at stroke end to absorb impact. Because this specific SKU lacks the -S magnet, it cannot host CMSG, DMSG, or EMSG reed switches; you must select an -S variant if position feedback is required. For practical sizing, plan for a safe working load of roughly 147 N, which translates to lifting about 12.5 kg vertically with a 2:1 safety margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X50U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X50U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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 MI25X50U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 MI25X50U Is Used
Package Diverting Gate
Actuates a routing flap on a packaging line, using its 245.3 N thrust to push heavy cartons smoothly into secondary lanes.
Vertical Parts Press
Provides a steady downward clamping force for seating bearings, easily handling workloads up to 12.5 kg without stalling.
Textile Loom Tensioner
Maintains proper yarn tension in humid manufacturing environments, leveraging the stainless steel barrel to resist washdown corrosion.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X50U the Right Cylinder?
When sizing this 25 mm bore, compare its 245.3 N push force at 0.5 MPa against the neighbouring Ø20 bore, which provides 157.0 N, or step up to the non-ISO Ø32 bore delivering 402.2 N if your application demands greater thrust. The U suffix denotes a 90-degree rear cover, orienting the port and pivot differently than standard axial layouts. Since this model has no -S magnet, external limit switches or mechanical stops are required for position detection.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centred; the TPU bumpers only soften the end-of-stroke impact and do not act as a brake. To suspend a load safely in the event of an air failure, integrate an external pilot-operated check valve or a dedicated rod lock. With a 50 mm stroke, side-load stress on the Ø10 mm rod remains minimal, but ensure front mounting alignment to prevent premature seal wear.
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 MI25X50U FAQ
This double-acting cylinder uses a 1/8 inch air port and an M10x1.25 male rod thread. At 0.5 MPa it generates 245.3 N of push force and 206.1 N of pull force. At 0.7 MPa, push increases to 343.4 N and pull to 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
This specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG magnetic switches; you need an -S variant for sensing. The U suffix indicates a 90-degree back cover, which orients the rear port and pivot mount perpendicular to the barrel for compact installations.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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