Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400CM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400CM 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 MI32X400CM
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles substantial actuation tasks over its 400 mm travel. The stainless-steel barrel and piston rod provide mild corrosion resistance, giving it a distinct edge over painted alternatives in damp or washdown environments. Its riveted construction remains compact, while fixed TPU bumper pads absorb the impact at each stroke end.
Because this is a non-magnetic SKU, it cannot accept position sensors; adding an -S magnet variant is required for CMSG, DMSG or EMSG switches. At 0.5 MPa, you can plan for a safe working load of roughly 241 N of real work. In vertical lifting scenarios, this equates to raising about 20.5 kg safely with a 2:1 margin. The 1/8" port and M10x1.25 male rod thread ensure robust pneumatic and mechanical connections for heavier duty cycles.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400CM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400CM |
|---|---|
| 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 MI32X400CM
| 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 MI32X400CM Is Used
Diverting Heavy Cartons
Pushes weighted packages along a packaging line, utilising the 402.2 N thrust to redirect items smoothly without stalling.
Vertical Parts Lowering
Lowers 20 kg metal castings from an overhead conveyor, relying on the 400 mm stroke and a safe 2:1 lifting margin.
Washdown Gate Actuation
Opens and closes stainless-steel access doors in a food processing plant, where the corrosion-resistant barrel survives daily moisture.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400CM the Right Cylinder?
When sizing this 32 mm bore, the smaller Ø25 generates 245.3 N of push at 0.5 MPa, whereas the larger Ø40 provides 628.3 N, helping you bracket the exact force needed. The CM round end back cover dictates the rear mounting and port orientation, so verify your spatial layout. If your mechanism requires position feedback, note that this specific unit lacks the internal magnet and cannot host a sensor switch.
Operating at the maximum standard stroke limit of 500 mm, this 400 mm travel length is well within standard specifications but requires careful guidance. A long 12 mm rod extension is susceptible to bending under side loads, so external guide rails are recommended to prevent premature seal wear. Furthermore, the TPU bumpers only decelerate the end-of-stroke impact; they do not function as a lock. If gravity or air loss could cause the piston to drift, implement an external pilot-operated check valve or a dedicated rod lock to hold the load securely.
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 MI32X400CM FAQ
This 32 mm bore cylinder features a 1/8" port. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, 563 N push and 483.8 N pull at 0.7 MPa, with a theoretical maximum of 82 kgf at 1.0 MPa.
No, this SKU lacks the internal magnet, so CMSG, DMSG or EMSG switches cannot be fitted. You must select the -S magnet variant if position sensing is required for your control system.
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Covers non-human-caused product damage.
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