Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25SR
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25SR is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 25mm 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
- Stroke25 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 MI25X25SR
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust actuation in tight spaces. The Ø25 bore uses a 1/8" port and an M10x1.25 male rod thread, engineered with a riveted barrel and rod that resist mild corrosion and washdown better than painted alternatives. Because it carries the -S suffix, a built-in piston magnet is included for direct mounting of CMSG, DMSG or EMSG reed and electronic switches.
Its compact 25 mm stroke and R axial-in rear cover make it exceptionally easy to plumb into confined machinery. The fixed TPU bumper pads absorb stroke-end impact without adding adjustable cushioning bulk, and the ISO 6432 mounting interface ensures it drops directly into standard mini-cylinder brackets. For practical sizing, plan for about 147 N of real work at 0.5 MPa, which means it can safely lift a 12.5 kg part vertically with a 2:1 safety margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25SR Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25SR |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 25 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 MI25X25SR
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×25 | 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 MI25X25SR Is Used
Package Diverting Gate
Actuates a short-stroke routing flap on a packaging conveyor, using the 245.3 N push force to swiftly redirect 10 kg cartons without hesitation.
Clamp Station Actuator
Secures aluminium extrusions at a CNC cutting station, leveraging the 25 mm stroke and 1/8" port for rapid, repeatable clamping under washdown conditions.
Pallet Stopper Pin
Deploys a mechanical stop pin on a roller conveyor to halt incoming pallets, relying on the stainless build to endure dusty and mildly humid warehouse environments.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25SR the Right Cylinder?
When sizing this 25 mm bore, stepping down to the Ø20 MI yields 157 N of push at 0.5 MPa, while stepping up to the Ø32 MI provides 402 N—useful if your payload exceeds the 12.5 kg vertical lift guideline. This SKU features the R back cover with an axial-in port, so ensure your manifold layout accommodates rear-axial air entry rather than a side or pivot orientation. The included -S magnet enables position sensing with CMSG, DMSG or EMSG switches, a vital feature for short 25 mm strokes where precise end-of-travel detection is required.
Remember that a standard double-acting cylinder relies entirely on continuous air pressure to maintain its rod position; if supply is lost or the valve is centred, the piston will drift and the TPU bumpers cannot act as a braking lock. To suspend a load safely mid-stroke, integrate an external pilot-operated check valve or a dedicated rod lock. Additionally, despite the short stroke, avoid excessive side-loading on the M10x1.25 rod thread to prevent premature seal wear and rod bending.
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 MI25X25SR FAQ
This double-acting cylinder features a 1/8" air port and an M10x1.25 male rod thread. It generates 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 -S suffix indicates a built-in magnet compatible with CMSG, DMSG and EMSG switches. Regarding load holding, the fixed TPU bumper pads only decelerate the stroke end and do not function as a lock; the piston will drift if air pressure is lost, so an external rod lock or pilot check valve is required to hold a suspended load.
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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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