
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ20X15-20 is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø20mm bore and 15mm 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.
Dial in precise forward stops on-site with the AirTAC MICJ20X15-20, a stainless-steel round-body mini cylinder featuring an external screw that shortens the extend stroke by up to 20 mm. 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, making it a robust choice for compact positioning tasks.
Twin adjustable air cushions soak up high-speed shock at both ends, letting you set the impact deceleration independently from the forward stop position. Built to the ISO 6432 mounting interface, the riveted stainless barrel and rod resist mild washdown corrosion. This non-magnet SKU cannot host a sensor, but the -S variant enables CMSG/DMSG/EMSG switches. It yields a safe working load of roughly 94 N, or about an 8 kg vertical lift with a 2:1 margin.
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ20X15-20 |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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. |
| ×15 | 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.
Clamp small machined parts securely using the 94 N safe working load, tuning the extend stop down a few millimeters to avoid crushing the workpiece.
Tuck packaging flaps at high cycle rates while relying on the dual adjustable air cushions to decelerate the 157 N push force smoothly before impact.
Press lightweight inserts into housings with exact depth control, using the 20 mm extend adjustment to compensate for material thickness variations on the fly.
When sizing this 20 mm bore, step down to a 16 mm version for lighter 100.5 N push tasks, or move up to a 25 mm bore if you need 245.3 N to overcome higher friction. The MICJ20X15-20 shines in rapid set-position moves where the 20 mm extend trim and needle-set cushions prevent harsh end-of-stroke impacts. Note that the stop screw only sets the end position; it is not a mid-stroke lock, and the piston will drift on air loss. For suspended loads, add an external rod lock or pilot check valve. Mount via LB foot, FA flange, or TC trunnion (SDB is unavailable), and select the -S magnet option if you require position sensing.
Quick checklist
This 20 mm bore cylinder uses a 1/8" port and an Ø8 mm rod. 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 without changing the full retract, while needle valves tune the adjustable air cushions at both ends to absorb high-speed shock. The cylinder is double-acting, drifts on air loss, and the stop screw is an end-position setter, not a mid-stroke lock. This non-S SKU lacks a magnet for sensors; choose an -S variant for CMSG/DMSG/EMSG switches.
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