Airtac MI25~40 Stainless Steel Mini Cylinder MI32X550SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X550SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 550mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke550 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 MI32X550SU
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles substantial work. The stainless-steel barrel and piston rod provide mild corrosion resistance, making it well-suited for damp or washdown settings where painted steel degrades. It features a 1/4" port and a U-type 90-degree rear cover for perpendicular mounting. This 550 mm unit is a non-standard, made-to-order stroke that exceeds the 500 mm maximum standard length for this bore.
Fixed TPU bumper pads absorb impact at the stroke extremes, though they decelerate rather than offer adjustable cushioning. Plan for a safe working load of roughly 241 N, which is about 60 percent of the 0.5 MPa rating. Because the -S suffix denotes a built-in magnet, you can mount CMSG, DMSG, or EMSG switches for position sensing. With a 2:1 safety margin, it lifts about 20.5 kg vertically, letting you match real part weights directly.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X550SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X550SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 550 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 MI32X550SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×550 | 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 MI32X550SU Is Used
Diverting Heavy Cartons
Pushes weighted packages across a transfer section with 402.2 N of 0.5 MPa thrust, using the 550 mm reach to clear wide belts.
Pneumatic Press Ejection
Ejects formed aluminum parts from a die, relying on the stainless rod to resist mild coolant spray during the downward cycle.
Vertical Parts Lift
Raises 20.5 kg fixtures between conveyor tiers with a 2:1 safety margin, using the U cover for stable 90-degree pivoting.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X550SU the Right Cylinder?
If 241 N of safe working force is excessive, the smaller Ø25 bore generates 245.3 N at 0.5 MPa; if your task requires more power, stepping up to the Ø40 bore yields 628.3 N. This SKU includes the U back cover for 90-degree orientation and the -S magnet for electronic or reed sensors. Remember that a plain cylinder drifts if air pressure drops or the valve centers, as the TPU pads only soften the stroke end rather than locking the rod. For suspended loads, add an external rod lock or a pilot-operated check valve. At 550 mm, this non-standard length demands careful alignment to prevent rod bending and premature seal wear under side-loading.
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 MI32X550SU FAQ
At 0.5 MPa it pushes 402.2 N and pulls 345.6 N. At 0.7 MPa it pushes 563 N and pulls 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa. The air port is 1/4" and the male rod thread is M10x1.25.
No to both. It has fixed TPU bumper pads that decelerate the stroke end but do not adjust like an air cushion. If air is lost, the piston drifts; the bumpers are not a brake. To hold a vertical load, install an external rod lock or pilot check valve. The -S magnet allows CMSG, DMSG, or EMSG sensors for position feedback.
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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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