
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X150-40 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 150mm 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 using the AirTAC MICJ40X150-40. This round-body stainless-steel mini cylinder features an external screw that shortens the extend stroke by up to 40 mm, giving a usable forward range of 110-150 mm, while a needle-set adjustable air cushion at both ends soaks up high-speed shock. As a double-acting unit, it delivers substantial power, pushing with 628.3 N and pulling with 527.8 N at 0.5 MPa. The stainless barrel and rod resist mild corrosion and washdown environments.
Driven by a 1/4" air port and a 16 mm piston rod with an M12x1.25 male thread, this Ø40 model operates at speeds from 30-800 mm/s. Note that this specific SKU lacks a magnet and therefore cannot support CMSG, DMSG, or EMSG sensors; you would need the -S variant for position detection. Being a larger bore, it is a non-ISO-6432 round-body unit.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X150-40 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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. |
| ×150 | Stroke length in mm. |
| -40 | 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.
Leverages the dual adjustable air cushions to decelerate the 150 mm stroke smoothly at high speeds, preventing impact damage when shifting heavy goods.
When sizing this 40 mm bore, stepping down to a Ø32 MICJ drops the 0.5 MPa push force to 402.2 N, whereas this model provides 628.3 N. There is no larger bore in the MICJ range, making this the top choice for heavy mini-cylinder tasks. The adjustable forward stop and dual air cushions excel in fast set-position moves where you must precisely trim the extend end and control impact without changing the physical cylinder length.
Keep in mind the external screw sets the end position but acts purely as a stop, not a mid-stroke lock. The cylinder will drift and cannot hold a load on air loss, so incorporate an external rod lock or pilot-operated check valve for suspended loads. For mounting, utilize LB foot, FA flange, or TC trunnion brackets, along with CA, U, R, or CM back covers. The SDB pivot-block is not available on this adjustable-stroke variant.
Quick checklist
At 0.7 MPa, the push increases to 879.6 N and the pull to 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 40 mm on-site, while the needle-set adjustable air cushion at both ends decelerates the piston near the stroke ends to absorb shock. This SKU has no magnet and cannot take a sensor. The cushion only decelerates and does not lock; the piston will drift on air loss, so use an external rod lock for holding.
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