Airtac MIJ Adjustable Cylinder MIJ40X25-20
The AirTAC MIJ Adjustable Cylinder MIJ40X25-20 is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 25mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM12×1.25
- 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 MIJ40X25-20
Dial in a precise forward end position on-site with the AirTAC MIJ40X25-20, a round-body stainless mini cylinder built for double-acting operation. An external stop screw lets you shorten the extend stroke by up to 20 mm, providing a usable 5 to 25 mm forward travel window so you can absorb mechanical tolerances or handle changeovers without swapping out the entire actuator. Retract travel remains at the full 25 mm.
The 40 mm bore generates substantial force, pushing with 628.3 N and pulling with 527.8 N at 0.5 MPa. The stainless-steel barrel and rod resist mild corrosion and washdown environments, and the 1/4" port feeds the 16 mm rod efficiently. Fixed TPU bumper pads decelerate the piston at the stroke ends, operating effectively between 30 and 800 mm/s.
Airtac MIJ Adjustable Cylinder MIJ40X25-20 Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X25-20 |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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. Note: the Ø40 bore is a larger, non-ISO-6432 size.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 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 MIJ40X25-20
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | 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 (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MIJ Adjustable Cylinder MIJ40X25-20 Is Used
Heavy Clamping Stations
Secure heavy workpieces with up to 377 N of safe working force, using the 20 mm adjuster to dial in the exact clamp depth for different material thicknesses.
Staged Diverting Gates
Route large products on a conveyor by setting a precise extend stop between 5 and 25 mm, accommodating varied package sizes without changing actuators.
Vertical Lift Stops
Lift loads of about 32 kg in pick-and-place units, relying on the external screw to fine-tune the lifting height for precise pallet loading.
Is the Airtac MIJ Adjustable Cylinder MIJ40X25-20 the Right Cylinder?
The adjustable stop screw is ideal for taking up slack during setup, but remember it only trims the extend end and acts as an end-position setter, not a mid-stroke lock. If your machinery must hold a load vertically during air loss, add an external rod lock or pilot check valve, as the piston will drift. Mounting options include LB foot, FA flange, and TC trunnion brackets (SDB pivot blocks are not compatible with this adjustable variant). Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG sensors.
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 MIJ40X25-20 FAQ
This 40 mm bore cylinder features a 1/4" air port and a 16 mm piston rod.
An external stop screw shortens the extend stroke by up to 20 mm on-site, giving you a usable forward travel of 5 to 25 mm while retract remains at the full 25 mm. This SKU does not include a magnet (-S), so it cannot support position 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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