
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X100-30STC is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 100mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Dial in the forward stop on site without swapping cylinders: the MICJ40X100-30STC uses an external screw to shorten the extend end position by up to 30 mm, giving a usable forward range of 70-100 mm. Retract remains the full 100 mm. A needle-set variable air cushion at both ends soaks up high-speed shock, letting you set the position and control the impact.
This double-acting round-body mini cylinder features a stainless-steel barrel and Ø16 rod for mild corrosion and washdown resistance. The 1/4" port feeds the bore, and the built-in magnet (-S) supports CMSG, DMSG and EMSG switches.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X100-30STC |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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. |
| ×100 | Stroke length in mm. |
| -30 | 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.
Shifts heavy packaging lines at speed, using the 30 mm extend trim to hit the diverter gate precisely while the dual air cushions absorb the 628.3 N impact.
Halts pallets on a TC trunnion mount; the external screw fine-tunes the stopping distance on the fly without removing the cylinder from the fixture.
The adjustable stop plus dual cushions excel in fast set-position moves where you must trim the forward endpoint without re-engineering the cell.
The TC trunnion mount handles pivot loads, though the SDB pivot-block is not offered on this adjustable variant. Because the stop screw only sets the end position and the cushion only decelerates near stroke end, the piston will drift on air loss. Use an external rod lock or pilot-operated check valve if you must hold a suspended load.
Quick checklist
This Ø40 bore cylinder has a 1/4" port and M12x1.25 male rod thread. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 30 mm (usable forward range 70-100 mm); retract stays the full 100 mm. A needle-set variable air cushion at both ends decelerates the piston near stroke end to absorb high-speed shock. The -S suffix means it has a built-in magnet for CMSG, DMSG and EMSG sensors.
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