
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ20X30-20 is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø20mm bore and 30mm 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.
Trim the forward stop by up to 20 mm on site without changing the cylinder. The AirTAC MICJ20X30-20 is a double-acting, round-body stainless-steel mini cylinder that pairs an adjustable extend stroke with a needle-set air cushion at both ends to absorb high-speed shock. You get a usable extend range of 10-30 mm, while retract remains the full 30 mm.
Built with a stainless barrel and piston rod, it handles mild washdown environments and drops into standard ISO 6432 mini-cylinder brackets. At 0.5 MPa it delivers 157 N of push force, translating to a safe working load of about 94 N or a 2:1 vertical lift capacity near 8 kg. This non-magnet SKU uses a 1/8" port and an M8x1.25 male rod thread, and cannot host a sensor.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ20X30-20 |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 30 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.
| 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.
| MICJ | ISO 6432 round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×30 | Stroke length in mm. |
| -20 | 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.
Dial in the exact 10-30 mm extend reach to clamp delicate components, using the air cushion to prevent impact damage on the 157 N forward thrust.
Set a precise stroke to push light boxes off a belt, leveraging the 8 kg vertical lift capacity and stainless construction for mildly humid zones.
Position a testing probe accurately without swapping cylinders, letting the needle cushion absorb the stop shock at high cycle speeds.
Size this 20 mm bore against its neighbors: drop down to the 16 mm bore for 100.5 N push at 0.5 MPa, or step up to the 25 mm bore for 245.3 N when you need more force. Choose this model when you need fast, repeatable set-position moves where the external stop screw dials in the endpoint and the adjustable air cushion decelerates the load smoothly.
Remember that the stop screw sets the end position but is not a mid-stroke lock; the piston 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 (SDB is not offered on this adjustable variant). Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG sensors.
Quick checklist
This 20 mm bore cylinder uses a 1/8" port. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 20 mm (retract stays full), while a needle valve adjusts the air cushion at both ends to decelerate high-speed impacts. This SKU has no magnet, so it cannot take CMSG/DMSG/EMSG sensors; you need the -S variant for sensing.
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