
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ25X75-20S 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 20 mm on site without swapping hardware using this AirTAC MICJ25X75-20S round-body mini cylinder. The external screw shortens the extend end position from its 75 mm nominal maximum down to 55 mm, while a needle-set adjustable air cushion at both ends soaks up high-speed shock. It is a double-acting, stainless-steel riveted unit that drops directly into standard ISO 6432 mini-cylinder mounting brackets and clevises.
The Ø25 bore delivers 245.3 N of push force at 0.5 MPa, yielding a safe working load of roughly 147 N or a vertical lift capacity of about 12.5 kg with a 2:1 margin. The 1/8" air port feeds a 30-800 mm/s speed range, and the built-in magnet (-S) enables position sensing with CMSG, DMSG, or EMSG switches. The stainless barrel and rod resist mild corrosion and washdown environments.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ25X75-20S |
|---|---|
| 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. |
| -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 a precise 55 to 75 mm clamping forward stop to seat components delivering 245 N of push force, relying on the dual air cushions to absorb shock during rapid cycling.
Fine-tune the extend length on the fly to deflect varying package sizes on a conveyor, using the 12.5 kg vertical lift capacity to actuate routing gates reliably.
Deploy the stainless steel construction in mildly corrosive packaging lines, setting a repeatable end position while the needle cushion prevents harsh impact at 800 mm/s.
When sizing this 245.3 N @0.5 MPa unit, step down to the Ø20 bore if your application only requires 157 N, or step up to the Ø32 bore (402.2 N @0.5 MPa) if heavier payloads exceed 147 N of safe working load. The 20 mm extend adjuster paired with the dual air cushions is specifically valuable for fast, settable-position moves where you must dial in a precise forward stop and control impact without changing the cylinder.
Because this is an adjustable-stroke variant, the SDB pivot-block is not available; use LB foot, FA flange, or TC trunnion mounts instead. The stop screw sets only the end position and the cushions only decelerate near stroke end—neither acts as a mid-stroke lock. The piston will drift on air loss, so install an external rod lock or pilot-operated check valve if you need to hold a suspended load.
Quick checklist
This double-acting cylinder uses a 1/8" air port and generates 245.3 N push / 206.1 N pull at 0.5 MPa, and 343.4 N push / 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 20 mm (usable range 55-75 mm), while the needle-set air cushion at both ends decelerates the piston near stroke ends. The -S magnet enables CMSG/DMSG/EMSG sensors. The cylinder does not hold position on air loss and drifts; use an external rod lock for suspended loads.
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