Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40R
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40R is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 40mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke40 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40R
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X40R is a robust round-body mini cylinder built for demanding actuation. It features a stainless-steel barrel and piston rod that shrug off mild corrosion, making it highly suitable for damp production areas where painted steel would degrade. The riveted construction keeps the unit compact, while fixed TPU bumper pads absorb the impact at stroke ends to protect your machinery.
This 32 mm bore unit operates on a 1/4" air port and provides a practical safe working load of roughly 241 N. In vertical lifting setups, it can comfortably hoist about 20.5 kg of mass when applying a 2:1 safety margin. Because this specific SKU lacks a magnet, it cannot host CMSG, DMSG, or EMSG sensors; you would need the -S variant for position detection.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40R Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40R |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| 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.
Theoretical Output Force (Ø32mm)
| 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.
Model Code: Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40R
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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.
Where the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40R Is Used
Package Diverting
Pushes medium-weight cartons off a main conveyor belt using 402.2 N of thrust, with the R rear axial port keeping hose routing tidy.
Clamp Actuation
Secures aluminium extrusions in a machining fixture, applying a reliable holding force without exceeding the 241 N safe working load.
Parts Ejection
Ejects formed metal blanks from a stamping press, relying on the stainless steel rod to withstand occasional coolant washdown.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40R the Right Cylinder?
When sizing this 32 mm bore actuator, compare it against its neighbours: a 25 mm bore yields 245.3 N of push at 0.5 MPa, whereas stepping up to the 40 mm bore provides 628.3 N. The MI32X40R is the right choice when your application requires around 400 N of extend force within a short 40 mm stroke. It features an R back cover with an axial-in port, which helps streamline piping in tight spaces alongside standard LB foot, FA flange, SDB pivot, and TC trunnion mounts.
Keep in mind that a standard double-acting cylinder like this will drift if air pressure drops or the valve is centred; the TPU bumpers only decelerate the piston near the stroke end and do not function as a brake. If your setup demands strict load holding on air loss, incorporate an external rod lock or a pilot-operated check valve. For higher cycling speeds that require end-of-stroke deceleration, consider the MIC variable air cushion variant instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40R FAQ
The MI32X40R generates 402.2 N push and 345.6 N pull at 0.5 MPa, and 563 N push and 483.8 N pull at 0.7 MPa. Its theoretical maximum force is 82 kgf at 1.0 MPa. The air port size is 1/4 inch.
No, this specific SKU does not include a magnet, so it cannot host CMSG, DMSG, or EMSG switches. You must specify the -S variant (MI32X40R-S) if your application requires electronic position sensing.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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