
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25CM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 25mm 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 in tight spaces. The Ø25 mm bore uses a 1/8" port and a 10 mm rod, while the CM round rear cover keeps the footprint clean for compact machine integration. Its riveted stainless barrel shrugs off mild corrosion better than painted alternatives in damp environments.
Because it conforms to ISO 6432 mounting dimensions, it drops directly into standard mini-cylinder brackets and clevises. Plan for roughly 147 N of actual work at 0.5 MPa to maintain a safe margin, which translates to lifting about 12.5 kg vertically. Fixed TPU bumper pads absorb the stroke-end impact, and since this specific SKU lacks the -S magnet, it cannot host position sensors.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25CM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 25 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. |
| ×25 | 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.
Uses the 245.3 N push force at 0.5 MPa to knock stamped metal pins out of a die block reliably.
Swings a lightweight routing flap on a packaging line using the compact 25 mm stroke and CM round end cover.
Folds corrugated cardboard flaps prior to taping, relying on the stainless build to survive dusty warehouse environments.
When sizing this 25 mm bore, dropping down to the Ø20 class reduces the 0.5 MPa push force to 157.0 N, whereas stepping up to the Ø32 bore raises it to 402.2 N. This model carries the CM round end cover and mounts via standard LB foot, FA flange, or TC trunnion hardware. If your mechanism relies on position feedback, you must select the -S magnet version to use CMSG, DMSG, or EMSG switches, as this plain SKU cannot take a sensor.
Remember that air pressure alone does not secure the piston; if the valve centres or air drops, the rod drifts and the TPU pads only soften the end-of-stroke impact rather than locking the load. For vertical or suspended loads, fit an external pilot check valve or a rod lock. The short 25 mm stroke also minimizes rod-bending side loads, keeping the 10 mm rod aligned for fast cycling.
Quick checklist
This double-acting cylinder uses a 1/8" port and generates 245.3 N push / 206.1 N pull at 0.5 MPa, and 343.4 N push / 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
Yes, the Ø25 bore uses ISO 6432 mounting dimensions, so it fits standard clevises and brackets. However, because this SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG switches; you must order the magnet version for position sensing.
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