Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 40mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke40 mm
- Port size1/8"
- 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 MI32X40SU
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty actuation in tight spaces. The stainless-steel barrel and piston rod shrug off mild corrosion, making it superior to painted alternatives in damp or washdown environments. It features a 1/8 inch air port and a 90-degree U back cover for compact side-mounting.
Built with fixed TPU bumper pads to decelerate the stroke end, the riveted construction keeps the unit light yet durable. Because this is a 32 mm bore, it is a non-ISO-6432 round-body cylinder. Plan for roughly 241 N of real work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a 2:1 safety margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 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.
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 MI32X40SU
| 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 MI32X40SU Is Used
Package Diverting Gate
Actuates a heavy routing flap on a logistics conveyor, using its 402.2 N push force to redirect dense cartons onto secondary sorting belts.
Stamping Press Ejector
Kicks small metal stampings out of a die bed in an automated press line, relying on the stainless rod to resist cutting fluid mist.
Pallet Stopper Arm
Raises a rigid stop block to halt pallets at a packaging station, utilizing the 90-degree U cover for a secure side-mounted hinge.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40SU the Right Cylinder?
When sizing this 40 mm stroke actuator, compare it against its neighbours: the 25 mm bore yields 245.3 N push at 0.5 MPa, while the 40 mm bore jumps to 628.3 N. The 32 mm bore hits the sweet spot for medium loads. The included -S magnet allows seamless integration of CMSG, DMSG or EMSG switches for position sensing.
Remember that a standard cylinder drifts if air pressure drops or the valve is centred; the bumpers only soften the end of travel and do not act as a brake. To suspend a load safely, install an external rod lock or a pilot-operated check valve.
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 MI32X40SU FAQ
At 0.5 MPa it pushes 402.2 N and pulls 345.6 N. At 0.7 MPa it pushes 563 N and pulls 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa. This 32 mm bore unit uses a 1/8 inch air port with an M10x1.25 male rod thread.
Yes, the -S suffix means a piston magnet is built-in, allowing you to mount CMSG, DMSG or EMSG switches directly onto the groove. The U back cover provides a 90-degree mounting interface, positioning the air port and pivot point perpendicular to the body for compact side-loading installations.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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