Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 125mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke125 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 MI32X125SU
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X125SU is a robust double-acting round-body mini cylinder built for demanding automation. Its stainless-steel barrel and rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. The U-style back cover features a 90-degree port orientation, simplifying downward or side-entry plumbing on crowded machines.
This 32 mm bore, 125 mm stroke unit operates at 30-800 mm/s and breathes through a 1/4 inch port. Fixed TPU bumper pads absorb end-of-stroke impact to protect the mechanism. Because the model includes the -S suffix, it carries a built-in piston magnet ready for CMSG, DMSG, or EMSG position switches. 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.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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 MI32X125SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 MI32X125SU Is Used
Packaging Line Diverter
Pushes heavy cartons at 90 degrees onto secondary packaging belts using its 402.2 N thrust and 125 mm travel.
Woodworking Clamp Press
Holds timber frames securely during routing operations, leveraging the 20.5 kg safe vertical lift capacity.
Textile Loom Tensioner
Actuates tensioning arms on large weaving equipment where the stainless body resists humid fiber-processing environments.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125SU the Right Cylinder?
When sizing this 402.2 N (at 0.5 MPa) unit, verify your actual load falls comfortably under the 241 N safe working threshold. If you need less force, stepping down to the 25 mm bore yields 245.3 N of push, while moving up to the 40 mm bore provides 628.3 N for heavier fixtures. The 125 mm stroke is well within the 500 mm maximum, keeping rod-bending risk low, but always ensure the load is guided to prevent side-loading. The built-in magnet (-S) pairs directly with CMSG, DMSG, or EMSG sensors for end-position confirmation.
Remember that a standard double-acting cylinder like this will drift if air pressure drops or the valve is centered, as the fixed TPU bumpers only decelerate the stroke and act as neither a lock nor a brake. To prevent a suspended load from falling, integrate an external pilot-operated check valve or a dedicated rod lock. Mounting options include LB foot brackets, FA flanges, SDB pivot blocks, and TC trunnions.
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 MI32X125SU FAQ
This 32 mm bore cylinder features a 1/4 inch 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.
Yes to the sensor: the -S suffix means it has a piston magnet compatible with CMSG, DMSG, and EMSG switches. However, it only has fixed TPU bumper pads for end-of-stroke deceleration. If you require an adjustable air cushion for high-speed loads, you need the MIC variant.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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