Airtac MIJ Adjustable Cylinder MIJ20X25-20S
The AirTAC Airtac MIJ Adjustable Cylinder MIJ20X25-20S is a genuine double acting, adjustable stroke round-body mini air cylinder with a Ø20mm 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.
- BoreØ20 mm
- Stroke25 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM8×1.25
- 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 MIJ20X25-20S
Dial in your forward stop without changing cylinders. The AirTAC MIJ20X25-20S is a round-body, stainless-steel mini cylinder whose external stop screw shortens the extend stroke by up to 20mm on site, letting you fine-tune the end position for setup changes or tolerance take-up. It is double acting, so retract always returns fully, and the 20mm bore delivers a 157N push at 0.5 MPa.
Built to ISO 6432 mounting dimensions, this 20 unit drops into standard mini brackets and clevises. The stainless barrel and rod resist mild corrosion and washdown, while the built-in -S magnet enables CMSG, DMSG, or EMSG sensors. With a 1/8" port and M8x1.25 rod thread, it handles speeds from 30 to 800 mm/s. For a safe working load, figure about 94N (roughly 60% of the 157N push), or a vertical lift of about 8kg with a 2:1 safety margin.
Airtac MIJ Adjustable Cylinder MIJ20X25-20S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ20X25-20S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MIJ Adjustable Cylinder MIJ20X25-20S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MIJ Adjustable Cylinder MIJ20X25-20S Is Used
Fixture Stop Adjustment
In a manual assembly fixture, use the 20mm adjustable stroke to set the exact forward stop for different part heights. Operators can turn the screw to fine-tune the position without swapping cylinders or adding shims.
Staged Feed on a Conveyor
On a small conveyor, stage a product with a first extend stroke, then retract and adjust the screw to push it further by a set amount. The 157N force handles lightweight boxes or trays, and the adjustable stop covers changeover.
Tolerance Take-Up in Clamping
When clamping parts with thickness variation, set the MIJ20X25-20S to push a soft stop into contact without over-travel. The 20mm adjustment window lets you dial in the right clamp position for each batch.
Is the Airtac MIJ Adjustable Cylinder MIJ20X25-20S the Right Cylinder?
Size this 20 cylinder against your load: it pushes 157N at 0.5 MPa, while the smaller 16 bore pushes 100.5N and the larger 25 bore pushes 245.3N. Choose the MIJ20 when you need moderate force with a compact footprint and the flexibility to adjust the forward stop by up to 20mm for part variation or setup changes.
The adjustable screw trims the extend end only-it is not a mid-stroke lock, and the cylinder will drift if air pressure is lost. For a held load, add an external rod lock or pilot check valve. Since this is the -S version, it accepts CMSG, DMSG, or EMSG sensors; mounting options include LB foot, FA flange, and TC trunnion (SDB pivot block is not available on this adjustable-stroke variant).
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 MIJ20X25-20S FAQ
At 0.5 MPa, push force is 157N and pull is 131.9N. At 0.7 MPa, push is 219.8N and pull is 184.7N. The theoretical maximum force at 1.0 MPa is 32 kgf. Operating pressure range is 0.15 to 1.0 MPa, with proof pressure at 1.5 MPa.
An external stop screw shortens the extend stroke by up to 20mm, so with a nominal 25mm stroke you can set the forward end position anywhere from 5mm to 25mm. The retract stroke is always full. This is not a mid-stroke lock-the cylinder drifts if air pressure is lost. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG sensors.
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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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