
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ25X350-75S is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø25mm bore and 350mm 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.
Dial in a precise forward stop without swapping hardware using the AirTAC MICJ25X350-75S, a double-acting stainless steel round-body mini cylinder. An external stop screw shortens the extend stroke by up to 75 mm on site, giving a usable forward range of 275 to 350 mm, while a needle-set adjustable air cushion at both ends soaks up high-speed shock. The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing.
Built to the ISO 6432 mounting interface for standard mini brackets, this Ø25 bore unit delivers 245.3 N of push force at 0.5 MPa. That translates to a safe working load of roughly 147 N, or about 12.5 kg of vertical lift with a 2:1 safety margin. The stainless barrel and rod shrug off mild washdown corrosion, and the 1/8" port keeps airflow efficient across the 30-800 mm/s speed range.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ25X350-75S |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 350 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. |
| ×350 | Stroke length in mm. |
| -75 | 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.
Ejects cartons of varying depths on a packing line, using the 75 mm extend trim to match box size without changing the cylinder, while the air cushion absorbs the impact of fast 350 mm strokes.
Clamps mild steel workpieces with a 147 N safe working load, relying on the adjustable forward stop to set the exact grip depth and the needle cushion to prevent shock on the fixture.
Raises a 12.5 kg access flap using the full 245.3 N push force at 0.5 MPa, with the -S magnet triggering DMSG sensors to confirm the open position and the cushion softening the landing.
When sizing this 350 mm stroke unit, verify your load against the 245.3 N push force at 0.5 MPa. If you need less punch, stepping down to the Ø20 bore drops the push force to 157 N; if you need more power, the Ø32 bore jumps to 402 N. The 75 mm extend adjuster is ideal for fast set-position moves where you must tune the forward impact without re-engineering the fixture, and the dual air cushions let you dial out end-of-stroke bounce at high speeds.
Remember that the stop screw sets the end position but acts purely as a mechanical stop, not a mid-stroke lock. The cylinder will drift and the piston will not hold its load on air loss, so add an external rod lock or pilot check valve for suspended loads. You can use LB, FA or TC mounts, though the SDB pivot block is not offered on this adjustable variant.
Quick checklist
This Ø25 bore cylinder uses a 1/8" air port and delivers 245.3 N push and 206.1 N pull at 0.5 MPa. At 0.7 MPa it provides 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 75 mm, letting you set the forward end position on site. The adjustable air cushions at both ends decelerate the piston near stroke ends to absorb shock. The cylinder does not hold position on air loss and the screw is not a mid-stroke lock; use an external rod lock for suspended loads.
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