
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ25X40-10S is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø25mm bore and 40mm 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 10 mm on site without swapping hardware using this stainless steel round-body mini cylinder. The MICJ25X40-10S pairs that external extend adjuster with a variable air cushion at both ends to soak up high-speed shock, giving you exact end-position control over a 30 to 40 mm forward travel window.
Built with a 25 mm bore and a 1/8" port, it delivers 245.3 N of push force at 0.5 MPa. The stainless barrel and rod resist mild corrosion and washdown, while the built-in magnet (-S) supports CMSG, DMSG, and EMSG sensors. For sizing context, this bore provides a safe working load of roughly 147 N, moving about 12.5 kg vertically with a 2:1 safety margin.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ25X40-10S |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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. |
| ×40 | Stroke length in mm. |
| -10 | 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.
Clamp 12.5 kg assemblies securely, using the 10 mm extend stop to fine-tune the grip length without reprogramming the machine cycle.
Divert packages at speed on a 1/8" ported circuit, relying on the dual adjustable air cushions to decelerate the 245.3 N thrust gently.
Deploy in damp packaging zones where the stainless steel riveted barrel and rod provide mild corrosion resistance during rinse-down cycles.
When sizing this unit against the family, dropping down to the 20 mm bore drops your 0.5 MPa push force to 157 N, while stepping up to the 32 mm bore raises it to 402 N. Choose this 25 mm model when you need roughly 245 N of thrust and the ability to dial in a specific extend stop under a fast-moving load.
The adjustable needle cushions tame impact at high speeds, but remember the cylinder does not hold position on air loss—the piston drifts, so add an external rod lock or pilot check valve for suspended loads. Mount via LB foot, FA flange, or TC trunnion (SDB is not offered on this adjustable variant), and use the -S magnet for position sensing.
Quick checklist
This 25 mm bore cylinder uses a 1/8" air port. At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N. At 0.7 MPa the push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 10 mm, while the needle-adjustable air cushions decelerate the piston near stroke ends. The -S magnet enables CMSG/DMSG/EMSG sensors. It does not hold position on air loss; use an external rod lock for suspended loads.
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