
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X650SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 650mm 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 AirTAC MI25X650SCM actuator is a double-acting round-body mini cylinder built from a stainless-steel barrel and rod. The riveted construction shrinks the footprint while resisting mild corrosion in damp or washdown environments. Because the bore is Ø25, it uses the ISO 6432 mounting interface, dropping directly into standard mini-cylinder brackets and clevises for easy design swaps.
This specific SKU features a 650 mm stroke, which exceeds the 500 mm standard maximum for this bore size and is produced as a made-to-order unit. It includes a built-in piston magnet (-S) for CMSG, DMSG or EMSG switches, and a CM round rear cover. For real-world work at 0.5 MPa, plan for about 147 N of usable load, which means it can comfortably lift a 12.5 kg part vertically with a 2:1 safety margin. Fixed TPU bumper pads absorb the end-of-stroke impact.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X650SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 650 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. |
| ×650 | 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 lightweight packages across a wide sorting belt using the full 650 mm extension, relying on the 245.3 N thrust to overcome guide friction.
Maintains consistent tension on fabric threads in a humid manufacturing plant, where the stainless steel rod prevents mild corrosion.
Lifts 12.5 kg tote bins between conveyor tiers using a 2:1 safety margin, tracking position via the built-in magnet and a DMSG switch.
Choosing this 25 mm bore means sizing against its neighbours: a 20 mm bore gives 157.0 N push at 0.5 MPa, while stepping up to a 32 mm bore yields 402.2 N. This model sits perfectly in the middle for medium-force tasks. Because the 650 mm stroke is quite long for a mini cylinder, be mindful of rod bending and side-load forces—ensure your guiding mechanism supports the extended rod to prevent premature seal wear.
The CM round end cover dictates the rear mounting orientation, and you can pair the body with LB foot, FA flange, SDB pivot or TC trunnion brackets. Remember that a standard double-acting cylinder drifts when air is removed or the valve is centred; the TPU bumpers only decelerate the stroke end and will not lock the load. To hold a vertical position safely, add an external rod lock or a pilot-operated check valve to your circuit.
Quick checklist
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. The air port is 1/8" and the male rod thread is M10x1.25.
No, the base MI uses fixed TPU bumper pads that simply decelerate the piston at the stroke end. If you need adjustable pneumatic cushioning for high speeds, look at the MIC variant. This model also features a -S magnet for CMSG/DMSG/EMSG sensors and a CM round rear cover.
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