Airtac MI25~40 Stainless Steel Mini Cylinder MI25X280SCM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X280SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 280mm 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
- Stroke280 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 MI25X280SCM
Delivering 245.3 N of push force at 0.5 MPa, the AirTAC MI25X280SCM is a double-acting round-body mini cylinder built for demanding mid-force tasks. The stainless-steel barrel and piston rod resist mild corrosion, making it far superior to painted alternatives in damp or washdown environments. Its Ø25 mm bore uses the ISO 6432 mounting interface, dropping directly into standard mini-cylinder brackets and clevises for easy design integration. A 280 mm stroke provides ample travel, and the 1/8" port ensures rapid airflow for speeds up to 800 mm/s.
In practical terms, you should plan for a safe working load of about 147 N rather than pushing the cylinder to its absolute limit. This translates to lifting a roughly 12.5 kg part vertically with a 2:1 safety margin. The -S suffix indicates a built-in piston magnet, allowing you to mount CMSG, DMSG, or EMSG reed or electronic switches for precise end-of-stroke detection. The CM round end back cover offers a clean rear profile, while fixed TPU bumper pads decelerate the piston at stroke extremes to reduce impact wear.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X280SCM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X280SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 280 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 MI25X280SCM
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×280 | 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 MI25X280SCM Is Used
Package Diverting Arm
Pushes medium-weight cartons off a main conveyor line using the 245.3 N push force, with the 280 mm stroke clearing adjacent guide rails completely.
Pouch Flap Folding
Actuates a folding blade on a vertical form-fill-seal machine, relying on the stainless construction to endure daily washdown cycles without corroding.
Tote Lid Clamping
Holds a plastic tote lid closed during an automated labeling process, using the -S magnet and a DMSG switch to confirm the clamp is fully extended before printing.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X280SCM the Right Cylinder?
When sizing this actuator, compare its 245.3 N push force at 0.5 MPa against the neighboring bores: a Ø20 provides 157.0 N, which might underpower a heavy jig, whereas a Ø32 offers 402.2 N for heavier payloads. The 280 mm stroke is well within the 500 mm maximum standard stroke for this bore, so no made-to-order wait is required. Because the rod extends 280 mm, ensure your front mounting provides adequate support to prevent rod bending under side loads. The CM round end back cover suits basic front-flange or foot mounting setups.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the directional valve is centered; the TPU bumpers only soften the end-of-stroke impact and do not function as a mechanical brake. If your application requires the load to hold its position during an air loss event, you must add an external rod lock or a pilot-operated check valve to the system.
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 MI25X280SCM FAQ
This double-acting cylinder has a 1/8" air port and an M10x1.25 male rod thread. At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N. At 0.7 MPa the push increases to 343.4 N and the pull to 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
No, the base MI uses fixed TPU bumper pads that merely decelerate the piston near the stroke end; it does not feature an adjustable air cushion like the MIC variant. Additionally, it cannot hold a load if air is lost—the piston will drift. You must use an external rod lock or pilot check valve for position holding.
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1-Year Warranty
Covers non-human-caused product damage.
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