
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X150SR is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 150mm 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 stainless-steel round-body mini cylinder handles heavier automation tasks with ease. The riveted stainless barrel and rod shrug off mild corrosion, making it superior to painted alternatives in damp environments. Fixed TPU bumper pads absorb stroke-end impacts, while the built-in magnet (-S) supports CMSG, DMSG and EMSG sensors for position detection.
With a 150 mm stroke and a 1/8" air port, it provides robust linear motion. For practical sizing, plan for roughly 241 N of usable work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a 2:1 safety margin. The R back cover features an axial-in port orientation to simplify plumbing in tight layouts.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X150SR |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 150 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. |
| ×150 | 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 heavy cartons off a main conveyor line using the 402.2 N thrust and 150 mm travel distance.
Acts as a robust pneumatic stop gate for loaded pallets, handling the kinetic impact via fixed TPU pads.
Secures metal workpieces during machining operations, safely clamping parts weighing up to 20.5 kg.
When sizing this 32 mm bore unit, note the Ø25 model steps down to 245.3 N push at 0.5 MPa, whereas the larger Ø40 jumps to 628.3 N. If your application loses air or the valve centres, the piston will drift; the bumpers only decelerate the end of travel and do not function as a lock. To suspend a load securely, integrate an external rod lock or a pilot-operated check valve. The -S magnet enables CMSG, DMSG and EMSG switches, and you can mount via LB foot, FA flange, SDB pivot or TC trunnion.
Quick checklist
At 0.5 MPa it provides 402.2 N push and 345.6 N pull. At 0.7 MPa it yields 563 N push and 483.8 N pull. The theoretical maximum is 82 kgf at 1.0 MPa. This 32 mm bore unit uses a 1/8" air port and a 12 mm rod.
No, the piston will drift if air is lost or the valve is centred. The fixed TPU bumper pads only decelerate the stroke end; they do not act as a brake. For load holding, install an external rod lock or a pilot-operated check valve.
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