
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X450R 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. The stainless-steel barrel and piston rod resist mild corrosion and washdown, outperforming painted alternatives in damp environments. Its riveted construction keeps the unit compact while fixed TPU bumper pads absorb stroke-end impact. Equipped with a 1/8 inch port and an R axial-in rear cover, it integrates cleanly into pneumatic setups.
For practical sizing, plan for roughly 241 N of real work at 0.5 MPa, which safely lifts about 20.5 kg vertically with a 2:1 margin. The 450 mm stroke falls within the 500 mm standard limit, providing extended reach without requiring a custom order. Note that because this SKU lacks a magnet, it cannot accept CMSG, DMSG or EMSG sensors; you would need the -S variant for position detection.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X450R |
|---|---|
| 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 logistics conveyor, using the 402.2 N thrust to push parcels firmly onto secondary sorting belts.
Extends 450 mm to index empty pallets into a stacking cradle, taking advantage of the long stroke and 20.5 kg safe vertical lift capacity.
Maintains heavy fabric tension across a wide loom bed, relying on the stainless-steel rod to withstand humid manufacturing conditions.
When sizing this 32 mm bore, the adjacent 25 mm option yields 245.3 N push, while the larger 40 mm provides 628.3 N at 0.5 MPa, allowing you to step up or down based on exact load requirements. If your application needs position feedback, select an -S model to enable magnetic switches. The R back cover provides an axial-in port orientation for tight mounting spaces.
Remember that a standard cylinder drifts when air is lost or the valve is centered, as the fixed TPU pads only decelerate the stroke end rather than locking the rod. To suspend a load safely, install an external rod lock or a pilot-operated check valve. Additionally, the 450 mm stroke demands careful alignment to prevent rod bending and premature seal wear from side loads.
Quick checklist
This 32 mm bore cylinder features a 1/8 inch port and a 12 mm rod. 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, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG or EMSG switches. You must select the -S variant to enable position sensing. It uses fixed TPU bumper pads for deceleration, not an adjustable air cushion.
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