
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ20X100-30 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: this AirTAC MICJ20X100-30 mini cylinder pairs an external extend adjuster with a needle-set air cushion at both ends to dial in the exact 70-100 mm extend position while soaking up high-speed shock. The stainless steel round barrel and M8 rod resist mild washdown corrosion, and the 1/8" port feeds a 20 mm bore that pushes 157 N at 0.5 MPa.
Built to the ISO 6432 mounting interface, it drops into standard mini brackets and clevises for easy retrofits. With a practical safe working load near 94 N, it moves roughly 8 kg vertically with a 2:1 safety margin. Note this SKU lacks the -S magnet, so it cannot host CMSG, DMSG or EMSG sensors.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ20X100-30 |
|---|---|
| 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.
Use the 157 N push force to seat small bearings, relying on the 30 mm extend trim to dial in the exact 70-100 mm closure depth without machining spacers.
Swing flaps at high speed and let the dual adjustable air cushions absorb the end-of-stroke shock, preventing dents while the external screw fixes the fold line.
Divert lightweight packages on a belt; the 1/8" port cycles fast, and the ISO 6432 body drops right into existing mini-cylinder clevis brackets.
If you need less force, the smaller Ø16 bore pushes just 100.5 N at 0.5 MPa and lacks the cushion build; stepping up to the Ø25 bore yields 245.3 N for heavier tooling. This Ø20 hits a 157 N sweet spot, and the 30 mm extend trim plus dual cushions excel in fast set-position moves where you must repeatedly hit a precise forward spot without impact bounce.
The stop screw sets the end position but is not a mid-stroke lock, and the piston will drift on air loss—add an external rod lock or pilot check valve for suspended loads. Mount via LB foot, FA flange or TC trunnion (SDB pivot block is not offered on this adjustable variant). Because this exact SKU has no -S magnet, position sensing is unavailable.
Quick checklist
This 20 mm bore cylinder uses a 1/8" air port. It pushes 157 N and pulls 131.9 N at 0.5 MPa, pushes 219.8 N and pulls 184.7 N at 0.7 MPa, with a theoretical maximum force of 32 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 30 mm (usable extend 70-100 mm) while needle valves tune the air cushions at both ends to decelerate the piston. The cushions only slow travel near the ends and the screw is not a mid-stroke lock; the piston drifts on air loss, so use a pilot check valve for suspended loads. This non-S SKU has no magnet for sensors.
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