Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SUTC
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SUTC is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 40mm 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
- Stroke40 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 MI25X40SUTC
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work in tight spaces. The Ø25 mm bore conforms to ISO 6432 mounting dimensions, so it drops directly into standard mini-cylinder brackets and clevises. Its riveted stainless barrel and rod shrug off mild corrosion, giving a real edge over painted alternatives in damp or washdown environments. Fixed TPU bumper pads absorb the impact at stroke extremes, while the built-in magnet supports CMSG, DMSG and EMSG position switches.
For practical sizing, plan for roughly 147 N of usable work at 0.5 MPa, which safely lifts about 12.5 kg vertically with a 2:1 margin. The U-type back cover provides a 90-degree port orientation for compact plumbing, and the included TC trunnion mounting allows pivoting articulation. Air connects via 1/8" ports, and the male M10x1.25 rod thread secures tooling firmly.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SUTC Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SUTC |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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 MI25X40SUTC
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 MI25X40SUTC Is Used
Package Diverting Gate
Actuates a routing flap on a packaging line, using the 245 N thrust to push heavy cartons onto a secondary belt at high speed.
Clamping Fixture
Secures aluminium extrusions during CNC machining, utilising the TC trunnion to accommodate slight frame misalignment while holding the part.
Pallet Stopper Arm
Deploys a mechanical stop on a roller conveyor to halt incoming pallets, with the U-type rear cover keeping air lines neatly tucked away.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X40SUTC the Right Cylinder?
If 245.3 N at 0.5 MPa is too much force, step down to the Ø20 bore which provides 157 N; if you need more muscle, the Ø32 bore pushes 402 N. This 40 mm stroke is well within the 500 mm maximum, keeping rod bending stress minimal. Because the standard TPU bumpers only decelerate the stroke end and do not lock the piston, expect drift if air is lost or the valve is centred. Add an external rod lock or pilot-operated check valve if your application must hold a vertical load securely in place.
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 MI25X40SUTC FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N. At 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. This Ø25 mm bore uses 1/8" air ports and features a male M10x1.25 rod thread.
Yes, the S suffix indicates a built-in piston magnet, allowing you to fit CMSG, DMSG or EMSG reed or electronic switches directly to the cylinder body. The TC trunnion accessory provides a pivot mount at the rear, working alongside the U-type 90-degree back cover for flexible, compact installation.
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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.
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Most inquiries answered within 7-8 hours.
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