Airtac MI25~40 Stainless Steel Mini Cylinder MI32X85SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X85SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 85mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke85 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 MI32X85SU
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty automation tasks. The stainless-steel barrel and Ø12 mm piston rod provide excellent mild-corrosion and washdown resistance, outperforming painted alternatives in damp environments. A 1/8" port supplies air, while the 85 mm stroke operates at speeds between 30-800 mm/s.
The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing. Fixed TPU bumper pads decelerate the piston at stroke ends. Plan for a safe working load of roughly 241 N, which equates to lifting about 20.5 kg vertically with a 2:1 safety margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X85SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X85SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 85 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 MI32X85SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×85 | 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 MI32X85SU Is Used
Pallet Diverter
Uses the 402.2 N thrust at 0.5 MPa to push heavy wood pallets onto a secondary packaging line.
Stainless Press
Pushes a 20 kg forming die downward in a food-grade washdown environment, relying on the stainless rod.
Carton Flap Folder
Actuates at 85 mm stroke to fold heavy corrugated cardboard flaps prior to case sealing.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X85SU the Right Cylinder?
When sizing this 32 mm bore, compare it against the 25 mm bore (245.3 N push @0.5 MPa) and the larger 40 mm bore (628.3 N push @0.5 MPa) to match your exact force needs. The U back cover provides a 90-degree port orientation for tight routing. This SKU includes the -S magnet for sensors; a plain MI without S cannot take a switch. If your mechanism drops air pressure, the piston will drift and the bumper only softens the end of travel, so add an external rod lock or pilot check valve to hold a suspended load.
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 MI32X85SU 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. The air port is 1/8".
No, the piston will drift. The fixed TPU bumper pads only decelerate the stroke end; they do not act as a brake. You must use an external rod lock or pilot-operated check valve to hold a suspended load.
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.
Request a Quote for Airtac MI25~40 Stainless Steel Mini Cylinder MI32X85SU
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