Airtac MIJ Adjustable Cylinder MIJ40X225-20S
The AirTAC MIJ Adjustable Cylinder MIJ40X225-20S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 225mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke225 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 MIJ40X225-20S
Dial in a precise forward end position on-site with the AirTAC MIJ40X225-20S, a round-body stainless steel mini cylinder featuring a 20mm adjustable extend stroke window. By turning the external stop screw, you can shorten the forward travel from its 225mm maximum down to 205mm, absorbing setup tolerances without swapping hardware. Retract travel remains at the full 225mm.
Built with a stainless-steel barrel and piston rod, the riveted construction resists mild corrosion and washdown environments. As a larger Ø40 bore, it uses a 1/4" port and a Ø16 rod with an M12x1.25 male thread, operating outside the ISO 6432 mounting interface at speeds from 30-800 mm/s. Because this SKU includes the -S magnet option, it is fully ready for CMSG, DMSG, or EMSG position sensing. Fixed TPU bumper pads decelerate the piston at the stroke ends.
Airtac MIJ Adjustable Cylinder MIJ40X225-20S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X225-20S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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 MIJ40X225-20S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 MIJ40X225-20S Is Used
Heavy Diverter Gate
Set the exact push distance to deflect heavy cartons on a belt without overshooting, using the 20mm adjuster to tune the 628.3N extend force for different package sizes.
Film Feed Tensioning
Fine-tune the forward reach of a 32 kg vertical lift mechanism to maintain consistent wrapping tension, relying on the -S magnet for position confirmation.
Is the Airtac MIJ Adjustable Cylinder MIJ40X225-20S the Right Cylinder?
The 20mm external stop screw is ideal for taking up mechanical slack or matching multiple stops across a machine using one part number. Remember that the stop screw only sets the extend endpoint; it does not function as a mid-stroke lock. If your mechanism must hold a vertical load during air loss, add an external rod lock or pilot check valve, as the piston will drift. For mounting, select LB foot, FA flange, or TC trunnion brackets, plus CA, U, R, or CM back covers (SDB pivot blocks are not available on this adjustable 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 MIJ40X225-20S FAQ
At 0.7 MPa, push increases to 879.6N and pull to 738.9N, with a theoretical maximum of 128.1 kgf at 1.0 MPa. The air port is 1/4" and the male rod thread is M12x1.25.
An external stop screw shortens the extend stroke by up to 20mm on-site, giving a usable forward range of 205-225mm while retract remains full. The -S suffix means a piston magnet is built-in for CMSG/DMSG/EMSG sensors. Fixed TPU bumpers decelerate the stroke end, but the screw is not a mid-stroke lock.
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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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