
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X175R is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 175mm 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.
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 25 mm bore uses a 1/8" air port and an M10x1.25 male rod thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted-steel alternatives in damp or washdown environments. The riveted round-body construction houses fixed TPU bumper pads that decelerate the piston at stroke end.
Because it conforms to ISO 6432 mounting dimensions, the cylinder drops directly into standard mini-cylinder brackets and clevises, simplifying spares and design. For practical sizing, plan for about 147 N of real work at 0.5 MPa, which means it lifts about 12.5 kg vertically with a 2:1 safety margin. The R back cover features an axial-in port orientation for neat rear plumbing. Note that this specific SKU lacks a magnet, so it cannot host CMSG, DMSG or EMSG sensors without switching to the -S variant.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X175R |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 175 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.
| 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.
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×175 | 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.
Shifts lightweight cardboard cartons on a packaging line using 245.3 N push force, with the 1/8" port ensuring rapid actuation.
Raises small machined components weighing up to 12.5 kg, relying on the stainless rod to resist workshop humidity.
Secures aluminium extrusions for cutting operations, using the 175 mm stroke to accommodate varying profile widths.
When sizing this 25 mm bore, the adjacent 20 mm option gives 157.0 N push while the larger 32 mm yields 402.2 N at 0.5 MPa, letting you step up or down if 245.3 N is borderline. The 175 mm stroke is well within the 500 mm standard maximum, though at this length you should ensure front mounting alignment to avoid rod-bending side loads. The R rear cover provides an axial port entry, which pairs well with FA flange or LB foot mounts for rigid setups.
Remember that a plain double-acting cylinder drifts if air pressure drops or the valve is centred; the TPU bumpers only soften the end-of-stroke impact and act as neither a lock nor a brake. To suspend a load safely mid-stroke, fit an external rod lock or a pilot-operated check valve. Additionally, because this SKU has no internal magnet, position sensing is impossible unless you specify the -S version for CMSG, DMSG or EMSG switches.
Quick checklist
The 25 mm bore provides a push of 245.3 N and a pull of 206.1 N at 0.5 MPa. At 0.7 MPa, push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. It features a 1/8" air port and an M10x1.25 male rod thread.
No, this specific SKU lacks an internal magnet, so it cannot host CMSG, DMSG or EMSG switches. You must select the -S variant for position sensing. The unit uses fixed TPU bumper pads for end-of-stroke deceleration rather than an adjustable air cushion, and its ISO 6432 mounting dimensions fit standard clevises.
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