Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SCMFA
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SCMFA is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 40mm 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
- Stroke40 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 MI25X40SCMFA
Delivering 245.3 N of push force at 0.5 MPa, this double-acting AirTAC mini cylinder handles substantial work in a compact footprint. The Ø25 mm bore uses a 1/8" port and a Ø10 mm piston rod with an M10x1.25 male thread. Its stainless-steel barrel and rod resist mild corrosion, giving it a real edge over painted-steel or aluminium minis in damp, food, or outdoor spots. The riveted round body keeps the unit light, while fixed TPU bumper pads absorb the impact at stroke end.
Thanks to the built-in -S piston magnet, you can mount CMSG, DMSG, or EMSG reed and electronic switches directly for position sensing. The ISO 6432 mounting interface means it drops smoothly into standard mini-cylinder brackets and clevises. Plan for roughly 147 N of real work at 0.5 MPa, which translates to lifting about 12.5 kg vertically with a safe 2:1 margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SCMFA Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SCMFA |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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 MI25X40SCMFA
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 MI25X40SCMFA Is Used
Package Diverting Gate
Actuates a routing flap on a packaging line, using the 245.3 N thrust to push heavy cartons onto a secondary belt at high cycling rates.
Textile Loom Tensioner
Positions a tensioning roller in a humid textile facility, where the stainless-steel rod and barrel resist mild washdown corrosion better than standard aluminium bodies.
Pallet Stopper Arm
Deploys a 40 mm stroke stop block to halt incoming pallets on a gravity conveyor, safely absorbing the impact via the fixed TPU bumper pads.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SCMFA the Right Cylinder?
When sizing this bore, the Ø20 model steps down to 157.0 N push at 0.5 MPa, while the larger Ø32 jumps up to 402.2 N, so the Ø25 sits right in the middle for medium-force tasks. This specific SKU includes an FA flange for rigid front mounting and a CM round rear cover. Because the base MI relies on fixed TPU bumpers rather than an adjustable cushion, consider the MIC variable-cushion variant if your application runs at the top of the 30-800 mm/s speed range and needs gentler end-of-stroke deceleration.
Remember that a plain double-acting cylinder drifts when air is lost or the valve is centred; the bumpers only soften the stroke end and do not act as a brake. If your machine requires the load to stay put during a pressure drop, fit an external rod lock or a pilot-operated check valve. With a 40 mm stroke, side-load and rod-bending stresses are minimal, but always ensure the FA flange alignment is true to prevent guide 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 MI25X40SCMFA FAQ
This Ø25 mm bore cylinder features a 1/8" air port and a Ø10 mm rod with an M10x1.25 thread. At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa it provides 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in piston magnet compatible with CMSG, DMSG, and EMSG switches. The FA flange provides rigid front face mounting, while the CM round end cover offers a compact rear profile. It conforms to ISO 6432 mounting dimensions for easy bracket interchange.
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Genuine AirTAC parts produced by AirTAC factory.
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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Most inquiries answered within 7-8 hours.
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