Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250R
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250R is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 250mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke250 mm
- Port size1/4"
- 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 MI32X250R
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles substantial workloads. The stainless-steel barrel and piston rod supply reliable mild-corrosion and washdown resistance, outperforming painted alternatives in damp environments. Because this is a non-magnetic SKU, it cannot accept position switches; you would need the -S variant to use CMSG, DMSG or EMSG sensors.
With a 250 mm stroke and a 1/4 inch air port, the riveted construction remains compact while operating between 30 and 800 mm/s. For practical sizing, plan for roughly 241 N of actual work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a safe 2:1 margin. The R back cover features an axial-in port orientation, simplifying rear plumbing in tight machinery layouts.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250R Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250R |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| 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 MI32X250R
| 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 MI32X250R Is Used
Package Diverting Gate
Actuates a heavy routing flap on a logistics conveyor, using the 402.2 N push force to redirect cartons weighing up to 20 kg at high cycle rates.
Pallet Strapping Press
Deploys the 250 mm stroke to position and tension strapping heads over large industrial pallets, benefiting from the washdown-ready stainless build.
Textile Loom Beam Shift
Shifts heavy fabric beams laterally during automated loom changes, relying on the 1/4 inch port for rapid exhaust and extension speeds.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X250R the Right Cylinder?
When sizing this 32 mm bore, the adjacent 25 mm option yields 245.3 N of push at 0.5 MPa, whereas stepping up to the 40 mm bore provides 628.3 N. The fixed TPU bumper pads decelerate the stroke end but do not function as an adjustable air cushion; if you need variable cushioning for high speeds, consider the MIC variant. Furthermore, these pads only soften impact and will not hold a load if air pressure drops or the valve is centered—always add an external rod lock or pilot check valve for secure positioning.
The 250 mm stroke is well within the 500 mm maximum standard stroke for this bore, meaning no made-to-order wait times. Ensure your mounting setup accommodates the R-type axial port cover, and verify that side loads are minimized to prevent rod bending over the extended travel distance.
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 MI32X250R FAQ
This 32 mm bore cylinder features a 1/4 inch air port and a 12 mm rod. 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.
No, this specific SKU lacks the internal magnet required for sensing, so CMSG, DMSG or EMSG switches cannot be used. You must select the -S variant (MI32X250R-S) if position detection is required for your automation sequence.
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