Airtac MICJ Adjustable Mini Cylinder MICJ40X80-40
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X80-40 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 MICJ40X80-40
Trim the forward stop by up to 40 mm on site without swapping hardware using this stainless steel round-body mini cylinder. The external screw shortens the extend end position, while a needle-set variable air cushion at both ends soaks up high-speed shock. As a non-ISO 6432 Ø40 bore, it runs on a 1/4" port with a 16 mm rod and M12x1.25 male thread.
The stainless barrel and rod resist mild washdown corrosion. Note this SKU lacks a magnet and cannot take CMSG, DMSG or EMSG sensors; order the -S variant for position sensing.
Airtac MICJ Adjustable Mini Cylinder MICJ40X80-40 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X80-40 |
|---|---|
| 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 MICJ40X80-40
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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.
Where the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-40 Is Used
Heavy Clamping
Dial in the exact 40 to 80 mm extend reach to clamp heavy parts, using the air cushion to absorb the 628.3 N impact at high speed.
Product Diverting
Extend a stopping gate to a precise set position on the line; the 1/4" port delivers enough flow to move the 16 mm rod rapidly.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-40 the Right Cylinder?
For lighter push needs, the Ø32 bore provides 402.2 N at 0.5 MPa, while this Ø40 is the largest available MICJ size at 628.3 N. The adjustable extend stop plus dual air cushions shine in fast set-position moves where you must dial in the exact forward landing and control impact. Foot (LB), flange (FA) and trunnion (TC) mounts apply, but the SDB pivot block is not offered on this adjustable variant.
Remember the stop screw sets the end position but is not a mid-stroke lock. The cylinder will drift and drop its load on air loss because the cushion only decelerates near the stroke end. Specify an external rod lock or pilot check valve if you need to hold a suspended load.
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 MICJ40X80-40 FAQ
It is a double-acting cylinder with a 1/4" port. At 0.5 MPa it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa it pushes 879.6 N and pulls 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, letting you set the forward end position without changing the cylinder. Needle valves adjust the air cushion at both ends to decelerate the piston before impact. It cannot hold a load on air loss and drifts without an external rod lock.
Authorized Export Seller
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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