Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50S
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50S is a genuine double acting, 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, adjustable stroke + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50S
Trimming the forward stop by up to 50 mm on-site, this double-acting round-body mini cylinder lets you dial in the extend position without swapping hardware. The MICJ40X80-50S pairs that adjustable extend stroke with a needle-set variable air cushion at both ends, soaking up high-speed shock to protect your tooling.
Built with a stainless-steel barrel and rod for mild washdown resistance, this non-ISO-6432 unit delivers 628.3 N of push force at 0.5 MPa. The 1/4" port and M12x1.25 male rod thread handle heavy loads, yielding a safe working load of roughly 377 N or a 32 kg vertical lift with a 2:1 margin. Because the -S suffix includes a piston magnet, you can mount CMSG, DMSG, or EMSG sensors for position detection.
Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Double acting, 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -50 | 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 (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50S Is Used
Heavy Press Damping
Drives a 30 kg stamping head at high speed, using the 50 mm extend trim to set the exact crush depth while the dual air cushions absorb the impact.
Pallet Deceleration
Pushes loaded pallets with 628.3 N of force, relying on the adjustable forward stop to vary the push-off distance without repositioning the cylinder.
Vertical Lift Gate
Raises a 32 kg access gate safely, leveraging the 2:1 safety margin on the 0.5 MPa push force and the stainless construction for humid environments.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50S the Right Cylinder?
When sizing this 40 mm bore, step down to a 32 mm bore if you need less force (402.2 N push at 0.5 MPa), as no larger MICJ bore exists. This model is ideal for fast, settable-position moves where the 50 mm extend adjuster and dual air cushions prevent end-of-stroke banging.
Note that the stop screw sets the end position but does not lock the piston mid-stroke; the cylinder will drift on air loss, so add an external rod lock or pilot check valve for held loads. Mount using LB foot, FA flange, or TC trunnion brackets (SDB pivot-block is not offered on this adjustable variant), and rely on the internal magnet for switch readiness.
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 MICJ40X80-50S FAQ
This 40 mm bore cylinder features a 1/4" air port and an M12x1.25 male rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 50 mm on-site, giving a usable 30-80 mm forward range, while retract remains full. Needle valves adjust the variable air cushion at both ends to decelerate the piston near stroke end. The -S magnet enables CMSG, DMSG, and EMSG sensors.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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