Airtac MICJ Adjustable Mini Cylinder MICJ40X80-30STC
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X80-30STC is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 80mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting, double rod, adjustable stroke + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-30STC
Dial in the forward stop on site with the MICJ40X80-30STC, a round-body stainless mini cylinder that lets an external screw shorten the extend end by up to 30 mm while a needle-set air cushion at both ends soaks up high-speed shock. The stainless-steel barrel and Ø16 mm piston rod resist mild corrosion and washdown environments. It uses a 1/4" port and an M12x1.25 male rod thread. Because the -S suffix denotes a built-in piston magnet, this unit is fully ready for CMSG, DMSG, or EMSG position switches.
The adjustable stop screw sets the forward end position only; it is not a mid-stroke lock. Note that Ø40 is a larger, non-ISO-6432 round-body size, and the TC trunnion mount is supported, though the SDB pivot-block is not available on this adjustable-stroke variant.
Airtac MICJ Adjustable Mini Cylinder MICJ40X80-30STC Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X80-30STC |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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.
Theoretical Output Force (Ø40mm)
| 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).
Model Code: Airtac MICJ Adjustable Mini Cylinder MICJ40X80-30STC
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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.
Where the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-30STC Is Used
Heavy Cart Diversion
Pushes loaded carts at high speed onto a secondary line, using the 30 mm extend trim to hit the exact gate position while the dual air cushions absorb the 628.3 N impact shock.
Pallet Flap Folding
Folds heavy cardboard flaps on oversized pallets, relying on the 32 kg vertical lift capacity and the stainless construction to handle dusty, mildly washdown packaging zones.
Vertical Lift Gate
Actuates a gravity-fed lift gate where the stop screw sets the precise 50 mm opening height, preventing mechanical binding without needing custom machined spacers.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-30STC the Right Cylinder?
When sizing this 40 mm bore, look at the adjacent options in the range. The combination of the 30 mm extend adjustment and dual air cushions makes this model ideal for fast, repeatable set-position moves where you need to tune out impact shock without swapping physical spacers.
Remember that a plain pneumatic cylinder does not hold its load on air loss or when the valve is centered—the piston will drift. The adjustable stop screw and the needle cushions only set the end position and decelerate the piston near the stroke ends; they do not act as a brake. If your application requires holding a vertical load, install an external rod lock or a pilot-operated check valve. For mounting, use the TC trunnion accessory, and since this SKU includes the -S magnet, you can directly mount CMSG, DMSG, or EMSG sensors for end-of-stroke detection.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MICJ Adjustable Mini Cylinder MICJ40X80-30STC FAQ
The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 30 mm, letting you set the forward end position on site, while the needle-set air cushions at both ends decelerate the piston at high speed. The -S magnet allows CMSG/DMSG/EMSG sensors. It does not hold position on air loss; use an external rod lock for that.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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