
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ20X100-30S is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø20mm bore and 100mm 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 30 mm on-site without swapping hardware using this stainless-steel, round-body mini cylinder. The MICJ20X100-30S pairs that adjustable extend stroke with a needle-set air cushion at both ends, letting you dial in the exact position while soaking up high-speed shock. Driven by a 1/8" port and an Ø8 rod, it delivers 157 N of push force at 0.5 MPa, yielding a safe working load of roughly 94 N or a 2:1 vertical lift of about 8 kg.
Built to the ISO 6432 mounting interface, it drops into standard mini brackets and clevises. The -S suffix equips the piston with a magnet for CMSG, DMSG, or EMSG sensors. The external screw modifies the extend end only and acts purely as a stop, not a mid-stroke lock. If you need to hold a load on air loss, add an external rod lock or pilot check valve.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ20X100-30S |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 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. |
| ×100 | 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 (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Dial in the exact 70-100 mm extend reach on machining clamps to accommodate different part thicknesses without re-engineering the fixture.
Use the dual air cushions to decelerate the 157 N push force smoothly when actuating lightweight conveyor diverters at high cycle rates.
Lift access gates or covers up to 8 kg, relying on the adjustable stop to set the precise open height and prevent over-travel.
When sizing, step down to the Ø16 bore for lighter loads (100.5 N push @0.5 MPa) or up to the Ø25 bore for heavier moves (245.3 N push @0.5 MPa). The 30 mm extend adjuster and dual cushions shine in fast set-position applications where you need precise stopping without impact damage. Mount via LB foot, FA flange, or TC trunnion; the SDB pivot block is not offered on this adjustable variant. Position sensing is ready out of the box thanks to the built-in magnet.
Quick checklist
This double-acting cylinder uses a 1/8" port and generates 157 N push / 131.9 N pull at 0.5 MPa, and 219.8 N push / 184.7 N pull at 0.7 MPa. Its theoretical maximum force is 32 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 30 mm (usable range 70-100 mm), while the needle-set air cushions at both ends absorb end-of-stroke shock. The -S magnet enables CMSG/DMSG/EMSG sensors. The stop screw is not a mid-stroke lock, and the cylinder will drift on air loss; use an external rod lock for load holding.
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