Airtac MI25~40 Stainless Steel Mini Cylinder MI32X20U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X20U is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 20mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke20 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 MI32X20U
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X20U is a robust round-body mini cylinder built for compact, high-thrust tasks. It features a stainless-steel barrel and piston rod that resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. This double-acting actuator uses a 1/8" air port and a 12 mm rod with an M10x1.25 male thread.
The riveted construction keeps the unit light, while fixed TPU bumper pads absorb the impact at stroke ends to protect the mechanism. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG position switches. For practical sizing, 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 MI32X20U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X20U |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 20 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 MI32X20U
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×20 | 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 MI32X20U Is Used
Short-Stroke Clamping
Ideal for securing heavy steel billets in a CNC mill, using the 402.2 N push force to hold parts firmly against a stop during machining.
Carton Flap Folding
Provides the necessary punch to fold heavy cardboard flaps on an automated packing line, where the stainless body withstands humid packing environments.
Product Diverting
Acts as a rugged diverter arm on a conveyor system, using its 20 mm stroke to quickly push items onto a secondary track without taking up much space.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X20U the Right Cylinder?
Choosing this 32 mm bore makes sense when a 25 mm model (providing 245.3 N push at 0.5 MPa) is underpowered, but you want to avoid stepping up to a 40 mm unit that pushes 628.3 N. The 20 mm stroke is extremely short, minimizing rod bending and side-load risks. The U back cover provides a 90-degree port orientation for tight routing. Note that the TPU bumpers only decelerate the end of stroke; they do not function as a lock. If your application must hold a vertical load when air is lost, add 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 MI32X20U FAQ
This 32 mm bore cylinder features a 1/8" air port. At 0.5 MPa it provides 402.2 N of push and 345.6 N of pull force. At 0.7 MPa, push increases to 563 N and pull to 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG or EMSG switches. You would need the -S variant of this round-body mini cylinder to enable magnetic sensing.
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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