Airtac MICJ Adjustable Mini Cylinder MICJ20X125-50S
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ20X125-50S is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø20mm bore and 125mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ20 mm
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- 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 MICJ20X125-50S
Dial in a precise forward stop on-site with the AirTAC MICJ20X125-50S, a stainless-steel round-body mini cylinder featuring a 50 mm extend-stroke adjuster and a needle-set air cushion at both ends. The external stop screw trims the extend end position down to a 75 mm usable stroke without swapping hardware, while the dual cushions soak up high-speed shock. Driven by a 1/8" port and an Ø8 mm rod, this double-acting actuator delivers 157 N of push force at 0.5 MPa.
Built with a mildly corrosion-resistant stainless barrel and rod, it conforms to the ISO 6432 mounting interface for straightforward bracket drops. The built-in magnet (-S) supports CMSG, DMSG, and EMSG sensors for position tracking. Factoring a 2:1 safety margin, it safely handles a vertical lift of about 8 kg or a 94 N working load, operating reliably at speeds of 30-800 mm/s.
Airtac MICJ Adjustable Mini Cylinder MICJ20X125-50S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ20X125-50S |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MICJ20X125-50S
| MICJ | ISO 6432 round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | 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 MICJ20X125-50S Is Used
Variable Stroke Diverting
Tune the 50 mm extend stop on a conveyor diverter arm to match mixed product sizes on the fly, using the dual cushions to absorb the impact of fast 157 N routing pushes.
Adjustable Carton Flap Folding
Dial in the exact 75-125 mm forward fold depth for various carton heights, relying on the stainless construction for washdown resistance in packaging lines.
Sensor-Ready Light Pressing
Use the CMSG/DMSG sensors via the -S magnet to confirm pressing depth on an 8 kg assembly component, tweaking the stop screw to prevent over-travel.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ20X125-50S the Right Cylinder?
When sizing this 20 mm bore, step down to the 16 mm variant (100.5 N push @0.5 MPa) for lighter grips, or up to the 25 mm bore (245.3 N push @0.5 MPa) if your load exceeds the 8 kg vertical lift threshold. The 50 mm extend adjustment is ideal for fast set-position moves where you need to tune the forward impact on the fly without machining spacers. Mount via LB foot, FA flange, or TC trunnion (the SDB pivot block is not offered on this adjustable variant), and use the -S magnet for electronic or reed switches.
Remember that the stop screw sets the end position but does not function as a mid-stroke lock. If air pressure drops, the piston will drift; the air cushion only decelerates the stroke near the end. To hold a load securely during pressure loss, install an external rod lock or a pilot-operated check valve.
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 MICJ20X125-50S FAQ
This 20 mm bore cylinder uses a 1/8" port and delivers 157 N push / 131.9 N pull at 0.5 MPa, and 219.8 N push / 184.7 N pull at 0.7 MPa. The theoretical maximum force is 32 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 50 mm (usable range 75-125 mm), while needle-set air cushions at both ends decelerate the piston at high speed. The -S denotes a built-in piston magnet required for mounting CMSG, DMSG, or EMSG position sensors.
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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