Airtac MI25~40 Stainless Steel Mini Cylinder MI32X55SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X55SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 55mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke55 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 MI32X55SU
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X55SU is a robust double-acting round-body mini cylinder built for demanding automation. Its stainless-steel barrel and piston rod shrug off mild corrosion, making it highly suitable for damp environments or washdown zones where painted steel alternatives quickly degrade. The riveted construction keeps the unit compact while fixed TPU bumper pads absorb impact energy at the stroke ends.
Because this is a Ø32 bore, it falls outside the ISO 6432 mounting standard, operating purely as a heavy-duty round-body mini cylinder. It features a 1/8" port and a 90-degree U back cover for flexible routing. Plan for roughly 241 N of actual work at 0.5 MPa to ensure reliable operation, which translates to safely lifting a 20.5 kg load vertically with a 2:1 safety margin. The built-in magnet (-S) supports CMSG, DMSG and EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X55SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X55SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 55 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 MI32X55SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×55 | 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 MI32X55SU Is Used
Package Diverting Gate
Actuates a heavy routing flap on a logistics conveyor, using its 402.2 N push force to reliably shift boxed freight into secondary sorting lanes.
Blow Mould Clamp
Secures plastic parison moulds in a mid-size bottling plant, leveraging the stainless build to withstand humid, high-temperature manufacturing conditions.
Pallet Stopper Arm
Deploys a 55 mm stroke blocking arm at the end of a roller track to halt incoming pallets, relying on the fixed TPU pads to absorb the impact.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X55SU the Right Cylinder?
When sizing this 55 mm stroke model, compare its 402.2 N push force at 0.5 MPa against the smaller Ø25 bore, which provides 245.3 N, or the larger Ø40 bore delivering 628.3 N. If your machine loses air pressure or the valve is centred, this cylinder cannot hold its load and the piston will drift; the TPU bumpers only decelerate the stroke end rather than acting as a brake. For suspended loads, integrate an external rod lock or a pilot-operated check valve.
The U-type back cover provides a 90-degree port orientation, and the included magnet enables seamless sensor integration. For longer strokes, be mindful of potential side-loading and rod bending forces.
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 MI32X55SU FAQ
This double-acting cylinder has a 1/8" port and generates 402.2 N push / 345.6 N pull at 0.5 MPa, and 563 N push / 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
The -S suffix means it has a built-in magnet for CMSG, DMSG or EMSG switches. It uses fixed TPU bumper pads for end-of-stroke deceleration, not an adjustable air cushion; for adjustable cushioning, look at the MIC variant.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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