
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X240SCA is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 240mm 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 robust actuation tasks. The Ø25 mm bore conforms to ISO 6432 mounting dimensions, dropping directly into standard mini-cylinder brackets and clevises for easy design integration. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments.
Equipped with a built-in magnet for CMSG, DMSG, or EMSG switches, the unit operates at 30-800 mm/s on a 1/8" port. Fixed TPU bumper pads absorb stroke-end impact. For practical sizing, plan for roughly 147 N of real work at 0.5 MPa, which translates to lifting about 12.5 kg vertically with a 2:1 safety margin.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X240SCA |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 240 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. |
| ×240 | 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.
Actuates a routing flap on a packaging line, using the 245.3 N push force to redirect medium-weight cartons reliably.
Adjusts tensioning rollers in humid textile manufacturing, where the stainless steel rod withstands moist ambient conditions.
Extends 240 mm to push layer blanks into position on a palletizer, relying on the CA clevis to accommodate pivot arc.
Sizing this model means checking both neighbors: the Ø20 bore provides 157.0 N push at 0.5 MPa, while the larger Ø32 offers 402.2 N. At 245.3 N, this Ø25 strikes a balance for medium loads. The CA rear pivot cover suits angular movement, complemented by LB, FA, SDB, and TC mounting options.
Because it is a standard double-acting cylinder, air drives both directions and the piston will drift if pressure drops or the valve centers—the TPU bumpers only soften the end of travel, they do not lock the rod. To hold a vertical load securely, add an external rod lock or a pilot-operated check valve. The 240 mm stroke is well within the 500 mm standard limit, but ensure side loads are minimized to prevent rod bending over that extension.
Quick checklist
At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N. At 0.7 MPa the push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port is 1/8".
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper pads only decelerate the stroke end; they do not act as a brake. You must use an external rod lock or pilot check valve to hold a load.
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