
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X60-40 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 60mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Dial in the forward stop without swapping cylinders: the AirTAC MICJ40X60-40 uses an external screw to shorten the extend end position by up to 40 mm on site, giving a usable forward range of 20-60 mm. This double-acting round-body mini cylinder pairs that on-site adjustability with a needle-set variable air cushion at both ends to soak up high-speed shock. The stainless-steel barrel and piston rod resist mild corrosion and washdown environments.
As the largest bore in the series, this Ø40 unit delivers serious force for a mini cylinder, pushing 628.3 N and pulling 527.8 N at 0.5 MPa. It features a 1/4" air port and an M12x1.25 male rod thread. Note this is a non-ISO-6432 size, and because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG sensors.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X60-40 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 60 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. |
| ×60 | 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.
Securely hold 30+ kg metal castings during machining, using the 40 mm extend adjustment to dial in the exact clamp distance without shimming.
Press bearings or pins into housings, using the adjustable forward stop to prevent over-travel and the 1/4" port to deliver high force.
When sizing this 40 mm bore, dropping down to the Ø32 model reduces the 0.5 MPa push force to 402.2 N, while no larger MICJ bore exists above it. The external stop screw and dual adjustable air cushions are perfect for fast, set-position moves where you must control both the exact endpoint and the impact deceleration.
Keep in mind that the stop screw sets the end position but is not a mid-stroke lock, and the air cushion only decelerates near the stroke end, never holding the load. If air pressure drops, the piston will drift, so add an external rod lock or pilot-operated check valve for suspended loads. For mounting, use LB foot, FA flange, or TC trunnion brackets, plus CA, U, R, or CM back covers, as the SDB pivot-block is not available on this adjustable-stroke variant.
Quick checklist
This double-acting cylinder pushes 628.3 N and pulls 527.8 N at 0.5 MPa, and pushes 879.6 N / pulls 738.9 N at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa. It uses a 1/4" air port and a 16 mm piston rod with an M12x1.25 male thread.
An external screw shortens the extend stroke by up to 40 mm, letting you set the exact forward end position on site, while the needle-set variable air cushion at both ends decelerates the piston at high speed. The cushion only absorbs shock near the end of travel and does not lock or hold the load, so the piston will drift on air loss. Also, this SKU lacks a magnet, so it cannot take position sensors.
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