
The AirTAC MIJ Adjustable Cylinder MIJ40X225-75S 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.
Dial in a precise forward end position on the fly with the AirTAC MIJ40X225-75S, a round-body stainless mini cylinder built for double-acting operation. An external stop screw lets you shorten the extend stroke by up to 75 mm on-site, giving a usable forward range of 150 to 225 mm while maintaining a full retract. This on-site adjustability allows one part number to cover several stroke stops, absorbing mechanical tolerances during setup without swapping cylinders.
The stainless-steel barrel and Ø16 mm piston rod resist mild corrosion and washdown environments, and the -S suffix means a built-in magnet is present for CMSG, DMSG, or EMSG position sensing. It runs on filtered air at 30-800 mm/s with fixed TPU bumper pads to decelerate the stroke end. As a larger bore, it is a non-ISO-6432 round-body design.
| Model | Airtac MIJ Adjustable Cylinder MIJ40X225-75S |
|---|---|
| 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.
| 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).
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -75 | 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.
Set the extend stop between 150 and 225 mm to push varied carton sizes onto branching conveyor lanes without changing the actuator.
Fine-tune the forward stroke up to 75 mm to press different film thicknesses, relying on fixed TPU bumpers to soften the final impact.
The external adjuster is ideal for taking up mechanical tolerances during changeover, but remember it only trims the extend end and is not a mid-stroke lock. Because a plain cylinder drifts on air loss, you must add an external rod lock or pilot check valve to hold a suspended load. Mount via LB foot, FA flange, or TC trunnion (SDB pivot-block is unavailable here), and leverage the -S magnet for electronic or reed sensors.
Quick checklist
The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 75 mm on-site, but retract remains full and the screw is not a mid-stroke lock. The -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG sensors, and the stainless build resists mild corrosion.
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