Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 400mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke400 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 MI32X400SU
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles substantial actuation tasks over its 400 mm travel. The stainless-steel barrel and Ø12 mm rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. It features a 1/8 inch air port and a U-style 90-degree rear cover for tidy routing.
Because the fixed TPU bumper pads only decelerate the stroke end rather than locking the piston, expect drift if air is lost. Plan for roughly 241 N of actual work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a 2:1 safety margin. The built-in magnet supports CMSG, DMSG and EMSG switches for position sensing.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 400 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 MI32X400SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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 MI32X400SU Is Used
Package Diverting Gate
Drives a heavy routing flap on a packaging conveyor, utilizing the 400 mm stroke to shift parcels between sorting lanes.
Vertical Pallet Stop
Acts as a robust pneumatic stop on a low-height pallet accumulator, relying on the 402.2 N push force to halt advancing loads.
Lab Sample Indexing
Pushes a multi-position sample tray through a 400 mm cycle in analytical equipment, with the stainless build resisting chemical splashes.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SU the Right Cylinder?
If 402.2 N at 0.5 MPa is too much, the Ø25 bore drops the push force to 245.3 N; stepping up to the Ø40 bore increases it to 628.3 N. For this 400 mm stroke, minimize side loading to prevent rod bending, as long strokes amplify leverage on the front seal. The U back cover simplifies 90-degree port orientation.
Remember that this plain cylinder drifts when valve pressure is centred or lost—the TPU pads cannot hold a load. Integrate a pilot-operated check valve or external rod lock if your mechanism requires strict position holding.
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 MI32X400SU FAQ
This Ø32 mm bore cylinder uses a 1/8 inch air 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 of 82 kgf at 1.0 MPa.
Yes, the -S suffix means it has a built-in magnet for CMSG, DMSG or EMSG switches. However, it does not hold position on air loss; the fixed TPU bumpers only decelerate the stroke end, so use a pilot check valve for load holding.
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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