
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X200-50S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 200mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Dial in a precise forward stop without swapping hardware using the AirTAC MICJ40X200-50S. An external stop screw shortens the extend stroke by up to 50 mm on site, giving a usable forward range of 150-200 mm, while a needle-set variable air cushion at both ends soaks up high-speed shock. Built as a double-acting, round-body stainless steel mini cylinder, the Ø40 bore pushes 628.3 N and pulls 527.8 N at 0.5 MPa. The 1/4" port and M12x1.25 male rod thread handle heavy flows, and the -S suffix enables CMSG, DMSG or EMSG sensors.
This stainless barrel and rod construction resists mild corrosion and washdown environments. Because it is a non-ISO-6432 size, it functions purely as a robust round-body mini cylinder rather than a standard interface unit. The cushion only decelerates the piston near the stroke end; it is not a mid-stroke lock or brake.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X200-50S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting, double rod, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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. Note: the Ø40 bore is a larger, non-ISO-6432 size.
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 kgf |
MIJ / MICJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | Stroke length in mm. |
| -50 | 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 (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Securely clamp heavy metal castings, using the 50 mm extend adjustment to dial in the exact forward stop without retooling the fixture.
Apply a controlled downward force for component seating, relying on the 1/4" port and robust Ø16 rod to drive up to 32 kg safely.
This model is ideal for fast, settable-position moves where the 50 mm extend adjuster lets you fine-tune the forward stop and the dual air cushions absorb end-of-stroke impact. Mount using LB foot, FA flange or TC trunnion brackets, as the SDB pivot-block is not available on this adjustable variant.
Remember that a plain cylinder does not hold its load on air loss or when the valve is centered, as the piston will drift. The stop screw sets the end position but acts as neither a mid-stroke lock nor a brake. If your application requires a held load, install an external rod lock or a pilot-operated check valve. The built-in magnet allows for precise position sensing.
Quick checklist
At 0.7 MPa, it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 50 mm on site, allowing a usable forward range of 150-200 mm, while the retract remains full. A needle-set variable air cushion at both ends decelerates the piston near the ends to soak up high-speed shock. The -S suffix provides a built-in magnet for CMSG, DMSG or EMSG sensors.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
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