
The AirTAC MIJ Adjustable Cylinder MIJ40X75-30 is a genuine double acting, double rod, adjustable stroke 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.
Dial in a precise forward end position on-site with the AirTAC MIJ40X75-30, a round-body stainless mini cylinder featuring a 30 mm extend-stroke adjustment window. An external stop screw lets you shorten the forward stroke from its 75 mm nominal maximum down to 45 mm, absorbing setup tolerances without changing the cylinder. The retract stroke remains full length. This double-acting actuator delivers substantial force, pushing with 628.3 N and pulling with 527.8 N at 0.5 MPa.
Built with a riveted stainless-steel barrel and a Ø16 mm piston rod, it resists mild corrosion and washdown environments. It operates at speeds from 30 to 800 mm/s using a 1/4" port and fixed TPU bumper pads to decelerate the stroke end. Because this SKU lacks the -S magnet, it cannot host CMSG, DMSG, or EMSG sensors. The stop screw sets the end position but is not a mid-stroke lock; for load holding on air loss, install an external rod lock or pilot check valve.
| Model | Airtac MIJ Adjustable Cylinder MIJ40X75-30 |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| 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 | Fixed TPU bumper pads |
| 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).
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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.
Adjust the forward stop on the fly to accommodate different carton widths on a washdown line, relying on the stainless construction for mild corrosion resistance.
When sizing this 40 mm bore, compare it directly against adjacent options. The 30 mm extend adjuster is ideal for taking up mechanical tolerances during changeover. Mount via LB foot, FA flange, or TC trunnion (SDB pivot-block is not available on this adjustable variant). For position sensing, select the -S magnet version to enable CMSG, DMSG, or EMSG switches.
Quick checklist
This 40 mm bore cylinder uses a 1/4" port and a male M12x1.25 rod thread. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa push is 879.6 N and pull is 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 30 mm (usable forward range 45-75 mm); the retract stroke remains full. This screw only sets the end position and is not a mid-stroke lock. The cylinder drifts on air loss, so use an external rod lock for holding. This SKU has no magnet and cannot take sensors.
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