
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X550SCMTC is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 550mm 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. The stainless-steel barrel and rod shrug off mild corrosion, making it superior to painted alternatives in damp washdown zones. A 550 mm stroke is a non-standard, made-to-order length for this 32 mm bore, extending past the 500 mm standard maximum to suit long-reach mechanisms.
Equipped with a built-in magnet for CMSG, DMSG or EMSG switches, the unit feeds piston position back to your controller. Its 1/8" port feeds air efficiently to drive the 12 mm rod. Plan for roughly 241 N of actual work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a safe 2:1 margin.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X550SCMTC |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 550 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. |
| ×550 | 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 packages across a transfer line with 402.2 N at 0.5 MPa, using the 550 mm stroke to bridge wide conveyor gaps.
Stainless steel construction resists moisture in food plants while the CM round end and TC trunnion secure the pivot point.
Raises 20.5 kg components safely with a 2:1 margin, relying on the DMSG sensor to confirm the fully extended position.
When sizing this 32 mm bore, dropping down to a 25 mm cylinder drops the 0.5 MPa push force to 245.3 N, while stepping up to a 40 mm bore yields 628.3 N. This model includes a CM round end back cover and a TC trunnion mount for pivot-frame installations. The -S suffix confirms the internal magnet is present for sensing.
Because 550 mm exceeds the 500 mm standard stroke limit, this long rod invites side-load and bending risks—ensure your guiding geometry is rigid. Note that venting air or centering the valve lets the piston drift; the fixed TPU bumper pads only soften the stroke end rather than locking the load. To suspend a weight securely, fit an external rod lock or a pilot-operated check valve.
Quick checklist
This 32 mm bore cylinder uses a 1/8" air port. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, 563 N push and 483.8 N pull at 0.7 MPa, with a theoretical maximum of 82 kgf at 1.0 MPa.
No. If air is lost or the valve is centered, the piston drifts. The fixed TPU bumper pads only decelerate the stroke end; they do not act as a brake. Use an external rod lock or pilot check valve to hold a load.
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