
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ32X40-20S is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø32mm bore and 40mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Shave up to 20 mm off the forward end position on-site with the external stop screw on this double-acting round-body mini cylinder. The AirTAC MICJ32X40-20S pairs that extend-stop adjustability with a needle-set variable air cushion at both ends, letting you dial in the exact forward stop and soak up high-speed shock without swapping hardware.
Built with a stainless-steel barrel and rod for mild corrosion and washdown resistance, the 32 mm bore runs on a 1/8" port and delivers 402.2 N of push force at 0.5 MPa. The built-in magnet (-S) supports CMSG, DMSG, and EMSG switches. Based on the 0.5 MPa thrust, it handles a safe working load of roughly 241 N, moving about 20.5 kg vertically with a 2:1 safety margin.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ32X40-20S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| 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 | Variable air cushion, both ends |
| 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.
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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.
Dial in the 20 mm extend stop to press bearings or pins precisely without changing fixtures, relying on 402.2 N of push force at 0.5 MPa.
Use the dual adjustable air cushions to silently decelerate the 32 mm piston when kicking heavy cartons at high cycle rates, preventing end-cap shock.
Lift roughly 20.5 kg safety gates using the 2:1 margin, tweaking the forward position on-site to match varying gate heights perfectly.
When sizing, the adjacent 25 mm bore yields 245.3 N push at 0.5 MPa, whereas the larger 40 mm bore hits 628.3 N—pick this 32 mm size when you need the 402.2 N output to drive a firm clamping or lifting action. The 20 mm extend adjustment window is ideal for fast set-position moves where you must tune the forward stop on the fly.
Remember that the stop screw and air cushion only decelerate the piston near the stroke end; they do not lock or hold the load mid-stroke. If air pressure drops, the piston drifts, so install an external rod lock or pilot check valve for suspended loads. Mount via LB foot, FA flange, or TC trunnion (SDB is unavailable here), and route your CMSG/DMSG/EMSG sensors into the -S magnet groove.
Quick checklist
This 32 mm bore cylinder uses a 1/8" port. At 0.5 MPa it pushes 402.2 N and pulls 345.6 N. At 0.7 MPa it pushes 563 N and pulls 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 20 mm, while needle valves tune the variable air cushion at both ends to absorb high-speed impact. The -S denotes a built-in piston magnet for CMSG, DMSG, or EMSG position sensors.
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