
The AirTAC Airtac MIJ Adjustable Cylinder MIJ32X120-20S is a genuine double acting, adjustable stroke round-body mini air cylinder with a Ø32mm bore and 120mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Dial in your forward end position on-site with the AirTAC MIJ32X120-20S, a round-body stainless mini cylinder built for double-acting service. An external stop screw lets you shorten the extend stroke by up to 20 mm, giving a usable forward range of 100-120 mm without changing the unit. The retract stroke remains full length. Because the Ø32 bore falls outside the ISO 6432 interface, it serves as a robust, non-standard round-body solution rather than a drop-in mini profile.
The stainless-steel barrel and Ø12 mm piston rod supply mild corrosion resistance for washdown or humid settings. At 0.5 MPa this bore delivers 402.2 N of push force and 345.6 N of pull force, yielding a safe working load of roughly 241 N or a 2:1 vertical lift capacity of about 20.5 kg. Fixed TPU bumper pads decelerate the stroke ends, while the included -S magnet enables position sensing with CMSG, DMSG, or EMSG switches.
| Model | Airtac MIJ Adjustable Cylinder MIJ32X120-20S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 120 mm |
| Acting type | Double acting, 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. Note: the Ø32 bore is a larger, non-ISO-6432 size.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 32 | Bore size in mm. |
| ×120 | 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.
Trim the 120 mm extend stroke by up to 20 mm to match varying box sizes on a packaging line, using the 402.2 N push force to redirect products without overtravel.
Absorb part-to-part variance in a machining cell by fine-tuning the forward stop on-site, applying a safe 241 N working load to hold components securely.
Raise materials up to 20.5 kg in a humid storage area, relying on the stainless construction and setting the exact lift height between 100 and 120 mm.
When sizing this model against the range, stepping down to a Ø25 bore drops the 0.5 MPa push force to 245.3 N, whereas stepping up to a Ø40 bore raises it to 628.3 N. The 20 mm external adjuster is ideal for taking up mechanical tolerances or staging feeds during changeover. Remember that the stop screw only trims the extend end position—it is not a mid-stroke lock. The piston will drift on air loss, so add an external rod lock or pilot check valve if you must hold a suspended load.
Mounting options include LB foot, FA flange, and TC trunnion brackets, along with CA, U, R, and CM back covers. The SDB pivot block is not available on this adjustable-stroke variant. Air connections use a 1/8" port with a male M10x1.25 rod thread.
Quick checklist
This double-acting cylinder uses a 1/8" air port. At 0.5 MPa it provides 402.2 N push and 345.6 N pull. At 0.7 MPa it provides 563 N push and 483.8 N pull. The theoretical maximum force is 82 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 20 mm on-site, but it does not affect the full retract stroke and is not a mid-stroke lock. The -S suffix means a piston magnet is included for use with CMSG, DMSG, or EMSG sensors.
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