
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X120SCM is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 120mm 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 workloads within a compact footprint. The stainless-steel barrel and rod shrug off mild corrosion, making it highly suitable for damp manufacturing environments where painted steel would degrade. It breathes through a 1/8 inch port and features fixed TPU bumper pads that decelerate the piston at the stroke ends. Because this SKU includes the -S magnet, it is fully primed for CMSG, DMSG, or EMSG position sensing.
For real-world sizing, plan for a safe working load of roughly 241 N, which accounts for friction and efficiency losses at 0.5 MPa. In vertical lifting scenarios, this translates to hoisting about 20.5 kg safely with a 2:1 margin. The rear CM round end cover provides a clean, versatile mounting interface for this 120 mm stroke unit.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X120SCM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 120 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. |
| ×120 | 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 logistics conveyor belt, using its 402.2 N push force to swing packages weighing up to 20 kg onto secondary sorting lanes.
Maintains precise, repeatable tension on industrial weaving equipment, leveraging the 120 mm stroke and stainless construction to withstand humid, fiber-rich production halls.
Indexes empty pallets into a stacking chute, relying on the rear CM round cover for stable mounting and the built-in magnet for DMSG stroke confirmation.
When sizing this 32 mm bore actuator, consider the neighbouring bores: a 25 mm version offers 245.3 N of push at 0.5 MPa, while the larger 40 mm option jumps to 628.3 N. Choose this model when your application demands that middle-ground force. Keep in mind that a plain double-acting cylinder drifts if air pressure drops or the valve is centred; the TPU bumpers only soften the end-of-stroke impact and will not lock the load. To suspend a vertical weight securely, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit. For higher cycling speeds that generate more kinetic energy, the MIC variant offers true adjustable air cushioning.
Quick checklist
This 32 mm bore cylinder uses a 1/8 inch 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 force of 82 kgf at 1.0 MPa.
No, the 32 mm bore exceeds the ISO 6432 standard, so it is simply a round-body mini cylinder and requires its own specific mounting accessories. However, the -S suffix means it has a built-in piston magnet ready for CMSG, DMSG, or EMSG electronic and reed switches.
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