Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250U is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 250mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke250 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 MI32X250U
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X250U is a double-acting round-body mini cylinder built for demanding mid-weight tasks. Its stainless-steel barrel and piston rod provide a real edge over painted alternatives, resisting mild corrosion and washdown in damp or food-processing environments. The 1/8" port feeds the 32 mm bore, while the U-style back cover provides a 90-degree port orientation for tight machinery layouts.
This 250 mm stroke unit relies on fixed TPU bumper pads to decelerate the piston at stroke end, rather than an adjustable air cushion. Because it lacks the -S suffix, this specific SKU cannot host CMSG, DMSG, or EMSG magnetic switches. For practical sizing, plan for a safe working load of roughly 241 N, which means it can comfortably lift about 20.5 kg vertically with a 2:1 safety margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250U |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 250 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 MI32X250U
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 MI32X250U Is Used
Product Diverting
Actuates a routing flap on a packaging conveyor, using its 250 mm stroke to redirect boxes weighing up to 20 kg into secondary lanes.
Vertical Pressing
Provides a steady 402.2 N downward push at 0.5 MPa to seat bearings or stamp light metal components in an automated assembly cell.
Pallet Gate Control
Operates a 90-degree pivoting safety gate on a washdown pallet line, where the stainless steel construction withstands daily humidity and cleaning.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250U the Right Cylinder?
When sizing this 32 mm bore, compare it 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. The MI32X250U sits perfectly in the middle for applications needing around 400 N of thrust. Note that because this is a non-ISO-6432 round-body cylinder, you must verify your mounting dimensions specifically for this 32 mm series rather than relying on standard mini-cylinder bracket footprints.
Remember that a standard double-acting cylinder drifts when air is removed or the valve is centered, as the TPU bumpers only soften the end-of-stroke impact and act as neither a lock nor a brake. If your application requires the rod to hold position under load, integrate an external rod lock or a pilot-operated check valve. Additionally, with a 250 mm stroke, ensure your mounting arrangement—such as an LB foot or TC trunnion—adequately supports the rod to prevent side-loading and premature bending.
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 MI32X250U FAQ
This 32 mm bore cylinder features a 1/8" port and a 12 mm rod. At 0.5 MPa it provides 402.2 N of push and 345.6 N of pull. 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 lacks the internal magnet required for switches. You must purchase the -S variant (MI32X250SU) to use CMSG, DMSG, or EMSG sensors. Additionally, this model uses fixed TPU bumper pads for deceleration rather than an adjustable air cushion.
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 MI32X250U
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.