
The AirTAC MIJ Adjustable Cylinder MIJ25X150-20S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø25mm bore and 150mm 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.
Dial in a precise forward end position on-site with the AirTAC MIJ25X150-20S, a round-body stainless steel mini cylinder featuring a 20 mm external stop screw that shortens the extend stroke from its 150 mm nominal length down to 130 mm. Because the adjuster trims only the extend end, you gain a single part number to cover multiple stop distances without swapping hardware, while retract remains full length. This double-acting actuator delivers robust power, pushing with 245.3 N and pulling with 206.1 N at 0.5 MPa.
Built with a stainless-steel barrel and piston rod, the riveted construction resists mild corrosion and washdown environments. The Ø25 bore conforms to the ISO 6432 mounting interface, dropping directly into standard mini brackets and clevises. The -S suffix equips this unit with a piston magnet for CMSG, DMSG or EMSG position sensing.
| Model | Airtac MIJ Adjustable Cylinder MIJ25X150-20S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 150 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.
| 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).
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×150 | 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.
Pushes cartons at 245.3 N to divert them on a belt, using the 20 mm stop screw to shift the contact point for different box sizes without changing the cylinder.
Feeds parts into a machining fixture, dialing the extend end position in by hand to compensate for stack-up tolerances across multiple incoming blanks.
When sizing this actuator, check both directions: stepping down to a Ø20 MIJ drops the 0.5 MPa push force to 157 N, while stepping up to a Ø32 MIJ raises it to 402 N. The 20 mm external stop screw is invaluable for absorbing mechanical tolerances during setup or staging feeds, letting you fine-tune the extend endpoint without machining spacers. Keep in mind the stop screw sets the end position but acts purely as a bumper; it is not a mid-stroke lock. If your application must hold a load on air loss, install an external rod lock or pilot-operated check valve, as the piston will drift.
For mounting, you can use LB foot brackets, FA flanges, or TC trunnions, but note the SDB pivot block is not available on this adjustable-stroke variant. Back cover options include CA, U, R, and CM. The 1/8" port (PT standard, G optional) feeds air at speeds from 30 to 800 mm/s. Position sensing requires the -S magnet already built into this model to mount CMSG, DMSG, or EMSG switches.
Quick checklist
The theoretical maximum force is 50 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 20 mm on-site, yielding a usable forward range of 130-150 mm, while retract remains full. The -S suffix means a piston magnet is built in for CMSG, DMSG, or EMSG sensors; the stainless steel barrel and rod provide mild corrosion resistance.
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