
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ25X50-40 is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø25mm bore and 50mm 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 40 mm on site without swapping cylinders, thanks to the external adjuster screw on this AirTAC MICJ25X50-40 round-body mini cylinder. Built with a stainless-steel barrel and rod for mild washdown resistance, it pairs that on-the-fly extend positioning with a needle-set adjustable air cushion at both ends to soak up high-speed shock. It conforms to the ISO 6432 mounting interface for standard mini brackets.
Delivering 245.3 N of push force at 0.5 MPa, it yields a safe working load of roughly 147 N or a vertical lift of about 12.5 kg with a 2:1 margin. The 1/8" port and M10x1.25 male rod thread handle the 30-800 mm/s speed range. Note this SKU lacks a magnet, so it cannot take CMSG/DMSG/EMSG sensors.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ25X50-40 |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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. |
| ×50 | 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.
Dial in the 10-50 mm extend stroke on the fly for light stamping tasks, relying on the 245.3 N push force and air cushion to absorb the high-speed impact at the end of travel.
Set a precise extended position to deflect packages on a belt, using the stainless construction to resist mild washdown during line cleaning.
Lift components weighing up to 12.5 kg with a 2:1 safety margin, tweaking the forward stop to match varying shelf heights without changing hardware.
For lighter duty, the Ø20 bore provides 157 N push at 0.5 MPa, while stepping up to the Ø32 bore yields 402.2 N if you need more force. This Ø25 model hits a solid middle ground, and its adjustable extend stop plus twin air cushions excel in fast set-position moves where you must dial in the exact forward end without re-engineering the assembly.
Remember the stop screw sets the end position but is not a mid-stroke lock; the piston drifts 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 (SDB is unavailable here), and select the -S variant if you need position sensing.
Quick checklist
This double-acting cylinder delivers 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 max force is 50 kgf at 1.0 MPa. It uses a 1/8" port and an M10x1.25 male rod thread.
An external screw shortens the extend stroke by up to 40 mm on site, while a needle-set adjustable air cushion at both ends decelerates the piston near stroke end to absorb shock. The stop screw is not a mid-stroke lock, and the cylinder drifts on air loss, so use an external rod lock for holding. This non-S SKU lacks a magnet and cannot take sensors.
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