Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400R
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400R 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 MI32X400R
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles demanding linear motion over its 400 mm travel. The stainless-steel barrel and Ø12 mm piston rod resist mild corrosion and washdown, outperforming painted alternatives in damp environments. A 1/8" port supplies air, while fixed TPU bumper pads absorb end-of-stroke impact. Because it lacks a magnet, this specific SKU cannot host position sensors; adding an -S variant enables CMSG, DMSG or EMSG switches.
For practical sizing, plan for roughly 241 N of actual work at 0.5 MPa to maintain a safe margin. Vertically, that equates to lifting about 20.5 kg with a 2:1 safety factor. The R back cover features an axial-in port orientation, simplifying plumbing where side clearance is tight. Operating pressure spans 0.15-1.0 MPa, with a proof rating of 1.5 MPa.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400R Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400R |
|---|---|
| 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 MI32X400R
| 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 MI32X400R Is Used
Package Diverter Gate
Shifts heavy cardboard cartons on a washdown packaging line, using its 400 mm stroke to open diverter flaps fully without risking mild corrosion from ambient moisture.
Textile Loom Tensioner
Maintains precise tensioning arms on industrial weaving equipment, where the stainless rod withstands fibrous dust and humid conditions better than standard steel.
Pallet Stopper Arm
Acts as a robust 402.2 N stopper for loaded pallets entering a stretch wrapper, absorbing the impact via fixed TPU pads as goods hit the 400 mm extension point.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400R the Right Cylinder?
When sizing this 32 mm bore, compare it against neighbours: the Ø25 delivers 245.3 N push at 0.5 MPa, while the Ø40 provides 628.3 N. Choose this model when your load sits comfortably between those thresholds. For a 400 mm stroke, mind the rod-bending risk under heavy side loads; use a guide rail to prevent piston damage. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion to suit your frame.
Remember that a plain cylinder drifts when air is lost or the valve centres; the TPU pads only decelerate the stroke end and never act as a lock. To suspend a load safely, install an external rod lock or a pilot-operated check valve. Since this SKU lacks the -S magnet, it cannot accept magnetic switches.
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 MI32X400R FAQ
This 32 mm bore cylinder uses a 1/8" air port and a male M10x1.25 rod thread. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, or 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 an internal magnet, so it cannot accept CMSG, DMSG or EMSG magnetic switches. You would need the -S variant for sensing. It is a non-ISO-6432 round-body mini cylinder featuring an R axial-in rear port and fixed TPU bumpers rather than adjustable cushions.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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