
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 350mm 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 round-body mini cylinder handles demanding 350 mm strokes with ease. The Ø25 bore conforms to ISO 6432 mounting dimensions, dropping directly into standard mini-cylinder brackets and clevises for straightforward design integration. Its riveted stainless barrel and rod shrug off mild corrosion, making it highly suitable for damp production areas where painted steel quickly degrades.
Equipped with a built-in piston magnet, the unit supports CMSG, DMSG, and EMSG switches for precise end-of-stroke detection. Fixed TPU bumper pads absorb impact at the stroke extremes without adding bulk. For practical sizing, plan for a safe working load of about 147 N, which comfortably lifts a 12.5 kg part vertically when applying a 2:1 safety margin.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 350 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. |
| ×350 | 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.
Pushes heavy packaged goods weighing up to 12 kg across a transfer section with enough thrust to overcome conveyor friction.
Extends 350 mm to fold large corrugated box flaps, utilizing the 245.3 N push force to crease thick material cleanly.
Sweeps individual components off an assembly line onto a lower pallet tier, relying on the stainless build to resist ambient humidity.
When sizing this 245.3 N (at 0.5 MPa) unit, verify if the job truly requires the full Ø25 capacity; stepping down to a Ø20 bore yields 157.0 N of push force, whereas scaling up to a Ø32 bore provides 402.2 N. This model features a CM round end cover and accepts LB foot, FA flange, SDB pivot, or TC trunnion brackets. Because the -S magnet is present, you can directly mount CMSG, DMSG, or EMSG sensors.
At a 350 mm stroke, the Ø10 mm piston rod is susceptible to bending if subjected to lateral loads, so ensure purely axial motion. Remember that venting the air supply causes the piston to drift freely; the TPU bumpers only decelerate the stroke end and do not function as a locking brake. To suspend a load safely during an air loss event, install an external rod lock or a pilot-operated check valve.
Quick checklist
This Ø25 mm bore cylinder features a 1/8" air port and an M10x1.25 male rod thread. At 0.5 MPa it provides 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.
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper pads only decelerate the rod near the stroke end; they do not act as a brake. To maintain a vertical position safely, you must add an external rod lock or a pilot-operated check valve to the system.
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Covers non-human-caused product damage.
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