
The AirTAC Airtac MIJ Adjustable Cylinder MIJ32X125-40S is a genuine double acting, adjustable stroke round-body mini air cylinder with a Ø32mm bore and 125mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Dial in a precise forward end position on-site with the AirTAC MIJ32X125-40S, a double-acting round-body mini cylinder featuring a stainless-steel barrel and rod for mild washdown resistance. An external stop screw lets you shorten the extend stroke by up to 40 mm, giving a usable forward range of 85 to 125 mm while retract remains full. This on-site adjustability allows one part number to cover several stroke stops, absorbing setup tolerances without changing the cylinder.
Built with a 32 mm bore and a 1/8" port, it delivers 402.2 N of push force at 0.5 MPa, yielding a computed safe working load of about 241 N. In a vertical lift scenario with a 2:1 safety margin, it moves approximately 20.5 kg. The included -S piston magnet supports CMSG, DMSG, and EMSG sensors, and fixed TPU bumper pads decelerate the stroke ends.
| Model | Airtac MIJ Adjustable Cylinder MIJ32X125-40S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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. |
| ×125 | Stroke length in mm. |
| -40 | 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 extend stroke up to 40 mm to tune the pusher distance for mixed carton widths on a packaging line, using the 402.2 N push force to index items reliably.
Absorb tooling tolerances on a machining fixture by dialing in the exact forward stop without machining spacers, leveraging the 241 N safe working load for secure part holding.
Lift a 20.5 kg access panel with a 2:1 safety margin, adjusting the open height on-site to clear varying pallet sizes without swapping the actuator.
When sizing this unit against adjacent bores, the MIJ25X75-20S offers 245.3 N push at 0.5 MPa for lighter jobs, while the MIJ40X125-40S steps up to 628.3 N for heavier loads. The 40 mm adjustment window here is ideal for taking up mechanical tolerances during changeovers. Remember that the stop screw only sets the extend end position; it is not a mid-stroke lock, and the piston will drift on air loss, so add an external rod lock or pilot check valve for held loads. Mount via LB foot, FA flange, or TC trunnion, noting that SDB pivot blocks are not offered on this adjustable variant.
Quick checklist
This 32 mm bore cylinder features a 1/8" port and a 12 mm rod. At 0.5 MPa it provides 402.2 N push and 345.6 N pull force. At 0.7 MPa it delivers 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 40 mm on-site, giving a usable forward range of 85 to 125 mm; the retract stroke remains full. The -S suffix indicates a built-in piston magnet for use with CMSG, DMSG, or EMSG sensors. Fixed TPU bumpers decelerate the stroke ends.
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