
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ25X75-50S is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø25mm bore and 75mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
Trim the forward stop by up to 50 mm on site without swapping hardware: the MICJ25X75-50S uses an external screw to shorten the extend end position from its 75 mm nominal down to 25 mm, while the retract stroke remains full. The built-in needle valves provide an adjustable air cushion at both ends to soak up high-speed shock, letting you set the exact impact and position independently.
Built as a stainless-steel round-body mini cylinder, the riveted barrel and Ø10 rod resist mild corrosion and washdown. It conforms to the ISO 6432 mounting interface for simple bracket drops. Generating 245.3 N of push force at 0.5 MPa, it yields a safe working load of about 147 N, moving roughly 12.5 kg vertically with a 2:1 margin. The -S suffix means a piston magnet is installed for CMSG, DMSG or EMSG sensors.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ25X75-50S |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 75 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MICJ | ISO 6432 round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -50 | 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 the extend stop in 25-75 mm to fold varying box flap heights on the fly, using the air cushion to soften the 245 N impact at high cycle rates.
Set the exact forward position to deflect packages of different widths without changing brackets, relying on the 12.5 kg vertical lift capacity.
Trim the extend end to press small bearings precisely, letting the dual needle cushions absorb the end-of-stroke shock for delicate parts.
Size this bore against its neighbours: the Ø20 generates 157 N of push at 0.5 MPa, while the Ø32 jumps to 402 N. Pick the Ø25 when your load sits near that 147 N safe working figure and you need precise end-position tuning. The external stop screw and dual cushions shine in fast set-position moves where you must dial in a specific forward spot and decelerate smoothly without slamming.
The stop screw sets the end position but is not a mid-stroke lock; if air drops, the piston drifts, so add an external rod lock or pilot check valve to hold a suspended load. Mount via LB foot, FA flange or TC trunnion (the SDB pivot block is not offered on this adjustable variant). Because this is an -S SKU, you can fit CMSG, DMSG or EMSG switches directly.
Quick checklist
This double-acting cylinder has a 1/8 inch air port and an M10x1.25 male rod thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, or 343.4 N push and 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 50 mm (usable extend 25-75 mm); retract remains full. Needle valves provide an adjustable air cushion at both ends to decelerate high-speed moves, but this is not a mid-stroke lock. The piston drifts on air loss, so use an external rod lock for suspended loads. The -S magnet enables CMSG, DMSG and EMSG sensors.
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