
The AirTAC MIJ Adjustable Cylinder MIJ40X160-20 is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 160mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Dial in your forward end position on-site with the AirTAC MIJ40X160-20, a round-body stainless mini cylinder featuring a 20mm adjustable extend stroke window. An external stop screw lets you trim the forward travel down from the 160mm nominal maximum, absorbing setup tolerances without swapping parts. 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 stainless-steel barrel and Ø16mm rod for mild corrosion and washdown resistance, it uses fixed TPU bumper pads to decelerate the stroke end. It operates at 30-800 mm/s on a 1/4" port with an M12x1.25 male rod thread. Because this SKU lacks the -S magnet option, it cannot accept 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, use an external rod lock or pilot check valve.
| Model | Airtac MIJ Adjustable Cylinder MIJ40X160-20 |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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. |
| ×160 | Stroke length in mm. |
| -20 | 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.
Fine-tune the forward end position to accommodate changing carton depths on the fly, leveraging the 527.8 N pull force to retract the folding arms cleanly.
The 20mm extend adjuster is perfect for changeover jobs where you need one part number to cover several staged stops.
Mounting options include LB foot, FA flange, and TC trunnion, but the SDB pivot-block is not available on this adjustable-stroke variant. Remember that the external screw trims the extend end only; retract remains full stroke. Since this specific configuration ships without a magnet, position sensing is not supported here.
Quick checklist
The theoretical maximum force is 128.1 kgf at 1.0 MPa. This Ø40 bore uses a 1/4" air port and an M12x1.25 male rod thread.
An external stop screw shortens the extend stroke by up to 20mm on-site, letting you set the exact forward position without changing the cylinder; retract remains full. This screw is not a mid-stroke lock, and the cylinder drifts on air loss, so use an external rod lock or pilot check valve for load holding. Note this non-S SKU cannot take magnetic sensors.
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