
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X225-50 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 225mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Dial in exact forward stops on-site with the AirTAC MICJ40X225-50, a double-acting round-body mini cylinder featuring a 50mm adjustable extend stroke. An external screw trims the forward end position down from the 225mm nominal maximum without swapping hardware, while a needle-set variable air cushion at both ends soaks up high-speed shock. Built with a stainless-steel barrel and Ø16 rod, it resists mild corrosion and washdown environments.
This Ø40 bore delivers serious thrust for a mini format, pushing 628.3N and pulling 527.8N at 0.5 MPa. It operates at 30-800 mm/s, uses a 1/4" port, and this specific SKU lacks a magnet, meaning it cannot host CMSG/DMSG/EMSG sensors without upgrading to the -S variant.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X225-50 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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. |
| ×225 | 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.
Secure heavy workpieces with up to 32kg of vertical lift force, tuning the 50mm extend stop to clamp precisely without over-traveling.
Divert heavier products at speed; the dual adjustable air cushions absorb the impact energy at the 225mm stroke end.
The 50mm extend adjuster and dual cushions shine in fast set-position moves where you must tune the forward stop and decelerate impact without adding external shock absorbers.
Keep in mind the stop screw sets the end position but acts as neither a mid-stroke lock nor a brake; the air cushion only decelerates near the stroke end. If the application must hold a load on air loss, add an external rod lock or pilot check valve. Mount via LB foot, FA flange, or TC trunnion (SDB pivot-block is not available), and note this non-magnetic SKU cannot take sensors.
Quick checklist
The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 50mm, letting you set the forward end position on-site. Needle valves adjust the variable air cushion at both ends to decelerate high-speed impacts. This cylinder does not hold position on air loss; use an external rod lock for that. Note this SKU has no magnet and cannot take sensors.
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