Airtac MIJ Adjustable Cylinder MIJ25X40-20
The AirTAC MIJ Adjustable Cylinder MIJ25X40-20 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 MIJ25X40-20
Dial in the exact forward end position on a 25 mm bore round-body mini cylinder. The external stop screw on this MIJ25X40-20 shortens the extend stroke by up to 20 mm on site, so you can fine-tune the stop point without changing the cylinder - retract always runs full. The stainless barrel and rod shrug off mild washdown and corrosion, and the ISO 6432 mounting interface drops into standard mini brackets.
The 1/8" port and M10x1.25 male rod thread follow the standard 25 mm bore layout, and fixed TPU bumpers soften the stroke ends at speeds from 30 to 800 mm/s.
Airtac MIJ Adjustable Cylinder MIJ25X40-20 Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ25X40-20 |
|---|---|
| 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 MIJ25X40-20
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -20 | 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 MIJ25X40-20 Is Used
Adjustable Stop Positioning
Use the 20 mm screw adjustment to set precise extend stops on a packaging line.
Staged Feed Control
In a small assembly fixture, dial the extend stroke to 30 mm for a first feed stage, then re-adjust to 40 mm for a second stage. The 25 mm bore delivers 206.1 N pull for retracting tooling, and the screw makes changeovers a two-minute job.
Tolerance Take-Up in Clamping
Compensate for part size variation in a light clamping application.
Is the Airtac MIJ Adjustable Cylinder MIJ25X40-20 the Right Cylinder?
The 20 mm adjustment window is ideal for taking up tolerance stack-ups or covering several stop positions with one part number - just turn the screw to set the extend end, no cylinder swap needed.
Remember the stop screw sets the end position but is not a mid-stroke lock; the piston drifts if air pressure is lost. For a held load, add an external rod lock or pilot check valve. This SKU has no magnet, so it cannot accept a CMSG, DMSG, or EMSG sensor - choose the -S variant if you need position sensing. Mounting options include LB foot, FA flange, and TC trunnion; the SDB pivot block is not available on this adjustable-stroke model.
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 MIJ25X40-20 FAQ
At 0.5 MPa, push force is 245.3 N and pull is 206.1 N. At 0.7 MPa, push rises to 343.4 N and pull to 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. Operating pressure range is 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa.
An external stop screw shortens the extend stroke by up to 20 mm, letting you set the forward end position between 20 and 40 mm; retract always runs full. The screw is an end stop, not a mid-stroke lock. This SKU without -S has no magnet, so it cannot accept a magnetic switch - you would need the -S variant for CMSG, DMSG, or EMSG sensors.
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.
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