
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ25X100-20S is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø25mm bore and 100mm 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 the forward stop on site without swapping hardware: the AirTAC MICJ25X100-20S uses an external screw to shorten the extend end position by up to 20 mm, yielding a usable 80-100 mm forward travel while retract remains full. Built as a double-acting, round-body stainless-steel mini cylinder, it pairs that settable stop with an adjustable air cushion at both ends to soak up high-speed shock.
The Ø25 mm bore runs on a 1/8" port and a 10 mm rod, generating 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 margin. The stainless barrel and rod resist mild corrosion and washdown, and the built-in magnet (-S) supports CMSG, DMSG and EMSG position switches. Because it conforms to ISO 6432 mounting dimensions, it drops directly into standard mini brackets and clevises.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ25X100-20S |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 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. |
| ×100 | 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.
Tune the 20 mm extend stop to set precise contact depth on a 12 kg pressing assembly, relying on the dual air cushions to absorb the 245.3 N impact at high speed.
Extend the rod between 80 and 100 mm to deflect varying package sizes on a washdown line, using the stainless construction to resist mild corrosion.
Cycle parts off a shelf at different reach distances, dialing the forward end position on site while the built-in magnet triggers DMSG sensors for timing.
When sizing this 245.3 N push class, step down to the Ø20 bore if your load is lighter (it provides 157 N at 0.5 MPa), or move up to the Ø32 bore for heavier cycles (402.2 N at 0.5 MPa). The 20 mm extend adjuster and dual needle cushions shine in fast set-position moves where you need to tune the impact without changing the physical cylinder.
Mount via LB foot, FA flange or TC trunnion (the SDB pivot block is not offered on this adjustable variant). Remember the stop screw sets the end position but acts as no mid-stroke lock; if you need to hold a load on air loss, add an external rod lock or pilot check valve. The -S magnet enables CMSG, DMSG and EMSG sensors for exact tracking.
Quick checklist
This Ø25 mm bore cylinder features a 1/8" port and a 10 mm rod. It delivers 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical maximum of 50 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 20 mm on site (retract stays full). The adjustable air cushion at both ends decelerates the piston near stroke ends to absorb high-speed shock. The -S suffix means it has a built-in magnet for CMSG, DMSG and EMSG sensors.
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