Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40CM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40CM is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 40mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke40 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 MI32X40CM
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X40CM is a robust double-acting round-body mini cylinder built for demanding actuation. Its stainless-steel barrel and Ø12 mm piston rod shrug off mild corrosion, making it highly reliable in damp or washdown environments compared to standard painted alternatives. The riveted construction keeps the unit compact, while fixed TPU bumper pads absorb the impact at stroke extremes to protect your mechanism. This specific configuration features a CM round rear cover and a 1/8" air port.
For practical sizing, plan for a safe working load of roughly 241 N, which is about 60 percent of the 0.5 MPa rating, rather than pushing the cylinder to its absolute limit. In a vertical lifting scenario, this translates to hoisting a 20.5 kg payload with a safe 2:1 margin. Note that this SKU lacks a magnet, so it cannot host CMSG, DMSG or EMSG sensors; you would need the -S variant for position detection.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40CM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40CM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 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 MI32X40CM
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 MI32X40CM Is Used
Stamping Pin Ejection
Uses the 402.2 N push force at 0.5 MPa to eject stamped metal pins from a die, with the 40 mm stroke providing rapid extraction.
Carton Flap Folding
Drives a mechanical arm to fold heavy cardboard flaps on a packaging line, benefiting from the stainless build during washdowns.
Divert Gate Actuation
Powers a heavy divert gate on a conveyor system, easily handling the 20.5 kg vertical lift equivalent to route products.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X40CM the Right Cylinder?
When sizing this 32 mm bore, stepping down to a 25 mm bore drops your 0.5 MPa push force to 245.3 N, whereas jumping up to a 40 mm bore yields 628.3 N. If your mechanism requires position feedback, select the -S magnet version to enable CMSG, DMSG or EMSG switches, as this base model cannot take a sensor. You can mount this unit using LB foot, FA flange, SDB pivot or TC trunnion brackets, and its CM round end cover accommodates specific rear-pivot arrangements.
Because the standard MI relies on fixed TPU bumpers rather than an adjustable cushion, consider the MIC variant if your application runs at high speeds and needs precise end-deceleration. Furthermore, this cylinder will drift if air pressure is lost or the valve is centred, as the bumpers only soften the end of stroke and act as neither a brake nor a lock. To suspend a load safely during an air failure, integrate an external rod lock or a pilot-operated check valve into your circuit.
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 MI32X40CM FAQ
This double-acting cylinder features a 1/8" air port and generates a push force of 402.2 N and a pull force of 345.6 N at 0.5 MPa. At 0.7 MPa, the push increases to 563 N and the pull to 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa.
This specific SKU does not include a magnet, so it cannot accept CMSG, DMSG or EMSG switches; you must specify the -S variant for sensing. The CM designation indicates a round rear cover style. The unit uses fixed TPU bumper pads to decelerate the stroke end, not an adjustable air cushion.
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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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Most inquiries answered within 7-8 hours.
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