
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X75-50 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 75mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Trimming the forward stop by up to 50 mm on site, the AirTAC MICJ40X75-50 lets you dial in a 25-75 mm extend position without swapping hardware. This round-body stainless steel mini cylinder pairs that external stop screw with a needle-adjustable air cushion at both ends, soaking up high-speed shock to protect your tooling. It operates at 30-800 mm/s and runs double-acting via a 1/4" port.
The stainless barrel and rod resist mild corrosion and washdown. Note this SKU lacks a magnet, so it cannot host CMSG, DMSG or EMSG sensors without the -S variant.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X75-50 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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. |
| ×75 | 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.
Tune the extend stop on site to route heavy pallets, relying on the stainless build for humid washdown environments.
Shorten the forward stroke to 40 mm to fold thick cardboard, letting the dual air cushions absorb the high-speed shock.
The 50 mm extend adjuster plus dual air cushions shine in fast set-position moves where you must tune the impact deceleration on the fly. The stop screw sets the end position but is not a mid-stroke lock, and the piston will drift on air loss, 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), and choose back covers CA, U, R or CM.
Quick checklist
The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 50 mm, while retract remains full. A needle-set adjustable air cushion at both ends decelerates the piston near stroke ends. This SKU has no magnet, so it cannot take sensors; the -S variant adds a magnet for CMSG, DMSG or EMSG switches.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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