
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC20X250SU is a genuine double acting + cushion round-body mini air cylinder with a Ø20mm bore and 250mm 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 features a needle-set variable air cushion at both ends to absorb end-of-stroke shock. The Ø20 mm bore generates 157 N of push force at 0.5 MPa, yielding a safe working load of roughly 94 N or a 2:1 vertical lift capacity of about 8 kg.
Built with a corrosion-resistant stainless barrel and rod, the unit includes a 1/8" port and an M8x1.25 male rod thread. Because it carries the -S suffix, a built-in piston magnet supports CMSG, DMSG and EMSG position switches. It conforms to the ISO 6432 mounting interface and uses a U-style 90-degree rear cover for versatile port and mounting orientation.
| Model | Airtac MIC Cushioned Mini Cylinder MIC20X250SU |
|---|---|
| Series | MIC ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 250 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. |
| ×250 | 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 lightweight cartons at high speed onto adjacent conveyor lanes, relying on the adjustable cushion to prevent end-of-stroke slamming.
Ejects machined plastic components from a fixture, using the 157 N push force to clear the workspace efficiently.
Lifts and positions empty storage trays weighing up to 8 kg vertically, benefiting from the smooth deceleration provided by the needle valve.
When sizing this 157 N push class actuator, dropping down to the Ø16 bore reduces force to 100.5 N, while stepping up to the Ø25 bore increases it to 245.3 N at 0.5 MPa. The adjustable air cushion is essential when moving heavier loads at high velocities, as it decelerates the piston smoothly without harsh impacts.
Remember that the cushion only slows the rod near the stroke end and does not function as a brake; the piston will drift if air pressure is lost, so fit an external rod lock or pilot check valve for suspended loads. Alongside the U cover, you can utilize LB foot, FA flange, SDB pivot or TC trunnion mounts to suit your frame.
Quick checklist
This double-acting cylinder features a 1/8" port and an M8x1.25 male rod thread. It delivers 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.
Yes, the -S suffix indicates a built-in magnet compatible with CMSG, DMSG and EMSG switches. The variable air cushion at both ends uses a needle valve to trap exhaust air, decelerating the piston to reduce shock at high speeds.
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