Airtac MI25~40 Stainless Steel Mini Cylinder MI32X375SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X375SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 375mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke375 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 MI32X375SU
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X375SU is a robust double-acting round-body mini cylinder built for demanding automation. Its stainless-steel barrel and Ø12 mm piston rod shrug off mild corrosion, making it highly suitable for damp or washdown environments where painted steel alternatives quickly degrade. The 375 mm stroke falls well within the 500 mm standard limit for this bore, while the U back cover provides a 90-degree port orientation for tight machinery layouts.
Because the theoretical maximum output is 82 kgf at 1.0 MPa, you should plan for a real-world safe working load of roughly 241 N at 0.5 MPa. This translates to lifting about 20.5 kg vertically when applying a sensible 2:1 safety margin. The 1/8" air port feeds the chamber efficiently, and fixed TPU bumper pads absorb the impact at stroke extremes. Furthermore, the built-in magnet (-S) enables direct mounting of CMSG, DMSG or EMSG switches for precise position sensing.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X375SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X375SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 375 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 MI32X375SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×375 | 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 MI32X375SU Is Used
Divert Gate Actuation
Provides the 402.2 N push force required to snap heavy cardboard divert gates into place on high-speed parcel sorting lines, with the 375 mm stroke reaching cleanly across the belt.
Vertical Flap Folding
Drives vertical carton flaps downward during case erecting, where the stainless construction survives daily washdowns and the 90-degree U cover keeps airlines out of the folding path.
Component Ejection
Ejects machined aluminium parts from a CNC enclosure, using the 375 mm travel to clear the door entirely before the robot retrieves the blank.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X375SU the Right Cylinder?
When sizing this 32 mm bore, compare it directly 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. Choose this 32 mm option when your application demands that middle-ground thrust. The 375 mm stroke is lengthy, so ensure your mounting configuration—whether LB foot, FA flange or TC trunnion—prevents rod side-loading and premature seal wear. The U rear cover dictates a 90-degree orientation, which helps route tubing cleanly in confined spaces.
Remember that a standard double-acting cylinder like this relies entirely on continuous air pressure to maintain its position. If air is lost or the directional valve is centred, the piston will drift; the TPU bumpers only decelerate the stroke end and act as neither a brake nor a locking mechanism. To suspend a load safely during an emergency stop, integrate an external pilot-operated check valve or a dedicated rod lock.
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 MI32X375SU FAQ
This 32 mm bore cylinder features a 1/8" air port and a male M10x1.25 rod thread. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, increasing to 563 N push and 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
Yes to sensors, no to adjustable cushions. The -S suffix denotes a built-in piston magnet, allowing you to mount CMSG, DMSG or EMSG switches along the body. However, it relies on fixed TPU bumper pads for end-of-stroke deceleration; if you need adjustable air cushioning for high speeds, look at the MIC variant.
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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