
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X450CMLB is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 450mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles substantial work within a compact footprint. The stainless-steel barrel and Ø12 mm rod shrug off mild corrosion, making it far superior to painted alternatives in damp or washdown environments. It features a CM round rear cover and an LB foot mount for stable base fixation. Equipped with fixed TPU bumper pads, it decelerates the piston at stroke ends to reduce impact wear.
Because this specific SKU lacks the -S magnet option, it cannot accept CMSG, DMSG or EMSG position switches. For practical sizing, plan for a safe working load of roughly 241 N, which is about 60 percent of the 0.5 MPa rating. Alternatively, it can vertically lift around 20.5 kg with a 2:1 safety margin. Air connects via a 1/8 inch port, and the male rod thread is M10x1.25.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X450CMLB |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 450 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. Note: the Ø32 bore is a larger, non-ISO-6432 size.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×450 | 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 heavy routing flap on a packaging line, using its 402.2 N push force to swing loads smoothly into secondary lanes.
Raises tote bins weighing up to 20.5 kg between conveyor tiers, benefiting from the stainless build in humid warehouse coolers.
Pushes finished plastic containers out of a moulding station, where the 450 mm stroke provides the necessary clearance.
When sizing this 32 mm bore, compare it against its neighbours: a 25 mm bore yields 245.3 N of push at 0.5 MPa, while stepping up to a 40 mm bore provides 628.3 N. This model sits comfortably in the middle for medium-force tasks. The 450 mm stroke is well within the 500 mm maximum standard stroke limit, meaning no made-to-order wait, though at this extended length you should carefully manage side loading to prevent rod bending. The included LB foot bracket secures the body firmly.
Remember that the fixed TPU bumpers only soften the end-of-stroke impact; they do not act as a brake. If air pressure drops or the valve is centred, the piston will drift and drop the load. To hold a vertical load safely, install an external pilot-operated check valve or a dedicated rod lock. Also note that without the -S magnet, electronic position sensing is impossible on this unit.
Quick checklist
At 0.5 MPa it provides 402.2 N of push and 345.6 N of pull. At 0.7 MPa the push is 563 N and pull is 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa. The air port size is 1/8 inch.
No, this specific SKU does not include a magnet. You must choose an -S variant to use CMSG, DMSG or EMSG switches. Additionally, this is a non-ISO-6432 round-body mini cylinder, and its fixed TPU bumpers only decelerate the stroke end rather than providing an adjustable air cushion.
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