Airtac MI25~40 Stainless Steel Mini Cylinder MI25X330SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X330SU is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 330mm 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
- Stroke330 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 MI25X330SU
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust linear motion tasks. The Ø25 mm bore uses a 1/8" air port and an M10x1.25 male rod thread. Its stainless barrel and piston rod resist mild corrosion, giving it a real edge over painted-steel alternatives in damp or washdown environments. Fixed TPU bumper pads absorb the impact at stroke extremes, while the riveted construction keeps the body compact.
Because the 245.3 N rating is a theoretical maximum, plan for a safe working load of about 147 N to account for friction and pressure drops. This translates to lifting a 12.5 kg part vertically with a 2:1 safety margin. The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing, and the U back cover provides a 90-degree port orientation for tight machinery layouts.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X330SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X330SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 330 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 MI25X330SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×330 | 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 MI25X330SU Is Used
Package Diverting Gate
Actuates a routing flap on a packaging line, using the 245.3 N thrust to push heavy cartons onto an adjacent conveyor belt.
Parts Elevator Lowering
Lowers stacked metal components weighing up to 12.5 kg in an assembly machine, relying on the 330 mm stroke to clear the work zone.
Textile Loom Tensioning
Maintains tension on a fabric guide arm in a humid textile facility, where the stainless steel barrel prevents mild corrosion.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X330SU the Right Cylinder?
This 330 mm stroke sits well within the 500 mm maximum standard stroke for the Ø25 bore, making it a reliable choice for extended travel. When sizing, the smaller Ø20 bore offers 157.0 N of push at 0.5 MPa, whereas stepping up to the Ø32 bore provides 402.2 N if your application demands greater thrust. At this 330 mm extension, be mindful of side loading and rod bending forces to prevent premature seal wear.
The U rear cover dictates a 90-degree mounting and port arrangement, which helps route tubing cleanly in confined spaces. Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centred; the TPU bumpers only decelerate the stroke end and will not hold a load. To lock a suspended weight, 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 MI25X330SU FAQ
This double-acting cylinder has a 1/8" air port and generates 245.3 N push and 206.1 N pull at 0.5 MPa. At 0.7 MPa it produces 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa.
It uses fixed TPU bumper pads to decelerate at the stroke end, not an adjustable air cushion. The Ø25 bore follows the ISO 6432 mounting interface for standard mini brackets, and the -S magnet allows CMSG, DMSG or EMSG sensors to be fitted.
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.
Request a Quote for Airtac MI25~40 Stainless Steel Mini Cylinder MI25X330SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.