
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC20X40CM is a genuine double acting + cushion round-body mini air cylinder with a Ø20mm bore and 40mm 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.
Designed for high-speed actuation, this double-acting stainless steel round-body mini cylinder uses an adjustable air cushion at both ends to decelerate the piston smoothly. The needle-set cushioning absorbs end-of-stroke shock, protecting your payload and reducing noise far better than a fixed bumper. Its stainless barrel and rod resist mild corrosion, making it suitable for washdown environments.
Delivering 157 N of push force and 131.9 N of pull force at 0.5 MPa, this Ø20 bore model handles a safe working load of roughly 94 N. It lifts about 8 kg vertically with a 2:1 safety margin. The unit features a CM round rear cover, an M8x1.25 male rod thread, and a 1/8" port. It conforms to ISO 6432 mounting dimensions for easy bracket integration. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG sensors.
| Model | Airtac MIC Cushioned Mini Cylinder MIC20X40CM |
|---|---|
| Series | MIC ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 40 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. |
| ×40 | 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.
Handles light carton diverting on conveyors where the 94 N safe working load effortlessly pushes parcels at high speed without harsh end-of-stroke impacts.
Ejects molded or machined components from a fixture; the adjustable air cushion silently decelerates the 8 kg load capacity to protect delicate part surfaces.
Opens and closes lightweight access hatches or bin lids in mildly humid storage areas, relying on the stainless steel construction for corrosion resistance.
When sizing this actuator, consider stepping down to the Ø16 bore if your load is lighter—it provides 100.5 N push at 0.5 MPa, saving space. If you need more power, the Ø25 bore offers 245.3 N push at 0.5 MPa. The adjustable air cushion is essential here when operating at high speeds or moving heavy loads, as it prevents harsh impacts. Remember that the cushion only decelerates the piston near the stroke end; it does not function as a brake or lock.
For vertical loads or applications requiring position holding on air loss, the piston will drift. You must add an external rod lock or a pilot-operated check valve to secure the load. This specific CM cover model has no internal magnet, meaning magnetic position sensing is not supported. If you require switches, select the -S magnet variant to enable CMSG, DMSG, or EMSG sensors.
Quick checklist
This double-acting cylinder 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 delivers 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa.
No, this specific SKU lacks the internal magnet, so it cannot accept CMSG, DMSG, or EMSG sensors; you need the -S variant for sensing. The adjustable air cushion at both ends only decelerates the piston near stroke end to reduce shock—it is not a brake or lock. For load holding on air loss, install an external rod lock or pilot check valve.
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