
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 30mm 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 short-stroke tasks. The Ø25 mm bore uses a 1/8 inch port and a Ø10 mm piston rod with an M10x1.25 male thread. Its riveted stainless barrel and rod resist mild corrosion, outlasting painted aluminium in damp or washdown environments. Fixed TPU bumper pads absorb stroke-end impact without adding bulk.
Because the piston carries a magnet (-S), you can mount CMSG, DMSG or EMSG switches for precise end-of-stroke signalling. The CM round end cover keeps the rear profile smooth for tight spaces. For real-world sizing, plan for roughly 147 N of usable work at 0.5 MPa, which means it can vertically lift about 12.5 kg with a safe 2:1 margin.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 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. |
| ×30 | 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.
Secures aluminium extrusions during CNC milling using the 245.3 N push force and 30 mm travel.
Folds corrugated box flaps at high speed where the stainless body withstands humid packing rooms.
Pops a short diverter arm to route products on a line, using the CM round end to fit narrow frames.
When sizing this 245.3 N (0.5 MPa) unit against neighbours, step down to a Ø20 bore for 157.0 N or up to a Ø32 bore for 402.2 N if you need heavier clamping. This SKU includes the -S magnet for position sensing and the CM round rear cover. If your layout loses air or the valve centres, the piston will drift and drop the load; the bumpers only soften the end of travel. Fit an external pilot check valve or rod lock to hold a suspended weight. The short 30 mm stroke minimises rod bending, but keep the load guided to prevent side-load wear.
Quick checklist
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N. At 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port is 1/8 inch and the male rod thread is M10x1.25.
Yes, the -S suffix means it has a built-in magnet for CMSG, DMSG or EMSG switches. It uses fixed TPU bumper pads to decelerate, not an adjustable air cushion. It will not hold a load if air is lost; use a pilot check valve for vertical holding.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.