
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC20X400CM is a genuine double acting + cushion round-body mini air cylinder with a Ø20mm bore and 400mm 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.
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless steel round-body mini cylinder handles long 400 mm strokes with precision. The adjustable air cushion at both ends lets you dial in the deceleration needle to absorb high-speed end-of-stroke shock, protecting your payload and cutting noise better than a fixed bumper. Its stainless barrel and rod resist mild corrosion and washdown environments.
Built to the ISO 6432 mounting interface, it drops directly into standard mini-cylinder brackets and clevises. With a 1/8" port and an M8x1.25 male rod thread, it generates a safe working load of about 94 N, lifting roughly 8 kg vertically with a 2:1 safety margin. Note this SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors; specify the -S variant if you need position detection.
| Model | Airtac MIC Cushioned Mini Cylinder MIC20X400CM |
|---|---|
| Series | MIC ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 400 mm |
| Acting type | Double acting + 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.
| MIC | ISO 6432 round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -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.
Pushes light parcels across sorting lanes at high speed, using the adjustable cushion to stop the 400 mm stroke gently without damaging boxes.
Ejects machined components from a fixture, relying on the 157 N push force and shock absorption to prevent parts from launching.
Opens and closes lightweight hopper gates, where the stainless build resists mild washdown moisture and the cushion prevents gate slamming.
If you need less force, stepping down is not an option within the MIC cushioned range, as the smaller bores (Ø8/10/12) only offer fixed bumpers. Stepping up to the MIC25X400 provides a heavier 245 N push at 0.5 MPa. The adjustable cushion matters most when cycling at high speeds or moving heavy loads over this long 400 mm travel, preventing harsh impacts. This CM round-end cover suits basic rear porting and mounting configurations.
Remember that the air cushion only decelerates the piston near the stroke end; it does not act as a brake or lock. If air pressure drops, the piston will drift, so add an external rod lock or pilot-operated check valve for secure load holding. For position feedback, you must select the -S magnet version to use CMSG, DMSG, or EMSG switches.
Quick checklist
This model features a 1/8" port and an M8x1.25 male rod thread. At 0.5 MPa it provides 157 N push and 131.9 N pull force. At 0.7 MPa it provides 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must order the -S variant for position sensing. The adjustable air cushions at both ends only serve to decelerate the load near stroke end, not to hold it.
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