Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30U is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 30mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ25 mm
- Stroke30 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 MI25X30U
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles substantial work in a compact footprint. The riveted round-body build carries a 1/8" air port and a 30 mm stroke, making it highly effective for short, powerful movements. Its stainless barrel and rod naturally shrug off mild corrosion, giving it a real edge over painted alternatives in damp washdown environments.
Because the bore conforms to ISO 6432 mounting dimensions, it drops directly into standard mini-cylinder brackets and clevises for easy design integration. Plan for roughly 147 N of actual work at 0.5 MPa to maintain a safe margin, which translates to lifting about 12.5 kg vertically. Fixed TPU bumper pads absorb the impact at stroke end, and this specific SKU lacks a magnet, so it cannot host CMSG, DMSG or EMSG sensors without switching to the -S variant.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 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.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MI25X30U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×30 | 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 MI25X30U Is Used
Package Diverting Gate
Snaps a short 30 mm diverter arm into place on a packaging line, using the 245.3 N thrust to positively redirect heavy cartons at high speed.
Short-Stroke Clamping
Locks a mild-steel workpiece against a CNC machining stop, relying on the stainless build to withstand stray coolant splashes.
Compact Pressing Head
Seats bearings or small pins in an assembly fixture, applying a safe 147 N working load without requiring a bulky profile body.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X30U the Right Cylinder?
When sizing this 25 mm bore, the neighbouring Ø20 generates 157.0 N of push at 0.5 MPa, while the larger Ø32 provides 402.2 N, letting you step up or down if 245.3 N is borderline. The U suffix specifies a 90-degree rear cover, orienting the back port neatly for tight machinery layouts. You can mount the body using LB foot brackets, FA flanges, SDB pivot blocks, or TC trunnions to suit your frame.
Keep in mind that a standard double-acting cylinder drifts when air is removed or a valve is centred, as the TPU pads only decelerate the stroke end rather than locking the rod. For vertical loads that must hold position, add an external rod lock or a pilot-operated check valve. Furthermore, the short 30 mm stroke keeps rod bending stress minimal, but always guide the load to prevent side-loading the piston.
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 MI25X30U FAQ
At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa it delivers 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa, and the air port is 1/8".
Yes, the Ø25 bore uses the ISO 6432 mounting interface, so it fits standard mini-cylinder clevises and brackets. However, this SKU lacks a magnet, so it cannot accept CMSG, DMSG or EMSG switches; you must specify the -S variant for position sensing.
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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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