
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ25X125-75 is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø25mm bore and 125mm 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 on-site with the AirTAC MICJ25X125-75, a stainless-steel round-body mini cylinder that shortens the extend stroke by up to 75 mm via an external screw. You get a usable extend range of 50 to 125 mm, while the retract stroke remains full. Built with a 10 mm piston rod and a 1/8" port, this double-acting actuator delivers 245.3 N of push force at 0.5 MPa, making it a robust choice for moderate automation loads.
The integrated adjustable air cushion at both ends soaks up high-speed shock, letting you set the exact position and control the impact without swapping hardware. It drops directly into standard ISO 6432 mini-cylinder mounting interfaces. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG sensors. The stainless barrel and rod resist mild corrosion and washdown environments, and the design provides a safe working load of about 147 N, or roughly a 12.5 kg vertical lift with a 2:1 margin.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ25X125-75 |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 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. |
| ×125 | 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.
Tune the 75 mm extend stop to route parts precisely on a conveyor, using the air cushion to absorb the impact of high-speed actuation without shaking the frame.
Push cartons of varying widths into a sealing station by dialing the forward position back from 125 mm, leveraging the 245.3 N push force for reliable feeding.
Raise light fixtures or trays up to 12.5 kg, relying on the adjustable cushion to bring the load to a gentle halt at the exact required height.
When sizing this 25 mm bore, compare it directly against adjacent models. If you need less force, the 20 mm bore offers 157 N of push at 0.5 MPa; if your application demands more power, stepping up to the 32 mm bore yields 402.2 N. The MICJ25X125-75 shines in fast set-position moves where the 75 mm extend adjuster and needle-set cushions prevent end-of-stroke banging. Mount using LB foot, FA flange, or TC trunnion brackets, noting that the SDB pivot-block is not available on this adjustable variant. For position feedback, you must select the -S magnet version to use CMSG, DMSG, or EMSG switches.
Remember that the external stop screw sets the forward end position but is not a mid-stroke lock. A plain cylinder does not hold its load on air loss or when the valve is centered—the piston will drift. If your setup requires held positioning, integrate an external rod lock or a pilot-operated check valve. The air cushion only decelerates the piston near the stroke end and never acts as a brake.
Quick checklist
This 25 mm bore cylinder features a 1/8" port and an M10x1.25 male rod thread. At 0.5 MPa it provides 245.3 N of push force and 206.1 N of pull force. At 0.7 MPa, push increases to 343.4 N and pull to 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 75 mm on-site, giving a usable forward range of 50 to 125 mm, while the retract remains full. Needle valves adjust the air cushion at both ends to decelerate the piston near stroke end, though this is not a mid-stroke lock. This SKU has no magnet, so it cannot take sensors; you need the -S variant for CMSG, DMSG, or EMSG switches.
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