Airtac MIJ Adjustable Cylinder MIJ25X40-40S
The AirTAC MIJ Adjustable Cylinder MIJ25X40-40S is a genuine double acting, double rod, adjustable stroke 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 fits standard ISO 6432 mini-cylinder mounting interfaces.
- BoreØ25 mm
- Stroke40 mm
- Port size1/8"
- Acting typeDouble acting, double rod, adjustable stroke
- 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 MIJ Adjustable Cylinder MIJ25X40-40S
Dial in the exact forward end position on-site with the AirTAC MIJ25X40-40S, a round-body stainless-steel mini cylinder featuring a 40 mm adjustable extend stroke. An external stop screw lets you trim the forward travel anywhere within that 40 mm window, absorbing setup tolerances and letting one part number cover several stop distances without swapping cylinders. Retract remains at the full 40 mm.
The 1/8" port and M10x1.25 male rod thread handle the air and linkage demands of this size class, while the -S suffix means a built-in magnet is present for CMSG, DMSG or EMSG position sensing.
Airtac MIJ Adjustable Cylinder MIJ25X40-40S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ25X40-40S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 kgf |
MIJ / MICJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MIJ Adjustable Cylinder MIJ25X40-40S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -40 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -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 (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MIJ Adjustable Cylinder MIJ25X40-40S Is Used
Carton Flap Folding
Fine-tune the forward stop to accommodate different box heights on a packaging line, relying on the stainless build to withstand occasional washdown during cleaning cycles.
Light Press Assembly
Set a precise end position for pressing bearings or pins, taking up mechanical tolerances with the external screw while the 12.5 kg vertical lift capacity handles the workpiece.
Is the Airtac MIJ Adjustable Cylinder MIJ25X40-40S the Right Cylinder?
When sizing this 25 mm bore against the range, dropping down to the MIJ20 cuts your 0.5 MPa push force to 157 N, whereas stepping up to the larger, non-ISO MIJ32 raises it to 402 N. The 40 mm external adjuster is ideal for changeover jobs where you need to tune the extend end without machining new hard stops. Remember that the stop screw sets the end position but acts purely as a bumper, not a mid-stroke lock; the piston will drift on air loss, so fit an external rod lock or pilot check valve if you must hold a suspended load. Mount using standard LB foot, FA flange or TC trunnion brackets (SDB pivot blocks are not offered on this adjustable variant), and pair the -S magnet with CMSG/DMSG/EMSG switches for end-of-stroke confirmation.
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 MIJ Adjustable Cylinder MIJ25X40-40S FAQ
The theoretical maximum force is 50 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 40 mm on-site, but retract always returns to the full 40 mm. The -S suffix indicates a built-in piston magnet for use with CMSG, DMSG or EMSG sensors. Fixed TPU bumper pads decelerate the stroke ends.
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 MIJ Adjustable Cylinder MIJ25X40-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.