Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SCM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 300mm 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
- Stroke300 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 MI25X300SCM
Delivering 245.3 N of push force at 0.5 MPa, this AirTAC MI25X300SCM is a double-acting round-body mini cylinder built for demanding automation. The stainless-steel barrel and Ø10 mm piston rod shrug off mild corrosion, making it far superior to painted alternatives in damp washdown environments. It features a 1/8" port and a CM round rear cover for flexible plumbing. Because the code includes an S, a built-in piston magnet is present, allowing you to mount CMSG, DMSG or EMSG reed or electronic switches directly onto the body for position sensing.
With a 300 mm stroke, the fixed TPU bumper pads absorb the end-of-travel impact to protect your mechanism, though they do not offer adjustable cushioning. For real-world sizing, plan for a safe working load of roughly 147 N rather than the absolute maximum rating. Vertically, this translates to lifting about 12.5 kg safely with a 2:1 margin, letting you match the cylinder to actual part weights without guesswork.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SCM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MI25X300SCM
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MI25X300SCM Is Used
Diverting Heavy Packages
Pushes medium-weight cartons or totes across a transfer section using its 245.3 N thrust at 0.5 MPa, with the stainless body surviving humid packing areas.
Vertical Parts Lift
Raises lightweight jigs or product trays through a 300 mm vertical path, safely lifting components up to 12.5 kg when applying a 2:1 safety margin.
Pallet Stopper Gate
Acts as a pneumatic stop for inbound pallets on a roller conveyor, using the CMSG sensors to confirm the gate is raised before the line advances.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X300SCM the Right Cylinder?
This Ø25 bore provides a strong middle-ground option, stepping up from the Ø20 class (157 N push at 0.5 MPa) when you need more muscle, but sitting below the heavy-duty Ø32 class (402.2 N push) to save space. The 300 mm stroke is well within the 500 mm maximum standard stroke for this bore, keeping it as a readily available catalogue item. At this extended length, be mindful of side-loading; ensure your front mounting is perfectly aligned to prevent rod bending and premature seal wear. The CM round end back cover pairs with standard LB foot, FA flange, SDB pivot and TC trunnion hardware.
Remember that a standard double-acting cylinder like this relies entirely on continuous air pressure to maintain its position. If the air supply drops or the directional valve is centred, the piston will drift and cannot hold a load in mid-stroke. The bumper pads only decelerate the impact near the end caps; they do not act as a mechanical brake. If your application requires strict position holding on air loss, you must add an external rod lock or a pilot-operated check valve to the 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 MI25X300SCM FAQ
This Ø25 mm cylinder has a 1/8" air port and an M10x1.25 male rod thread. The double-acting thrust is 245.3 N push and 206.1 N pull at 0.5 MPa, increasing to 343.4 N push and 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
Yes, the Ø25 bore uses the ISO 6432 mini-cylinder mounting interface, so it drops directly into standard clevises and brackets. Because this SKU includes the -S magnet, you can fit CMSG, DMSG or EMSG switches for position detection. It uses fixed TPU bumper pads rather than an adjustable air cushion.
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