
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC25X420SCM is a genuine double acting + cushion round-body mini air cylinder with a Ø25mm bore and 420mm 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.
High-speed strokes run smoother with the AirTAC MIC25X420SCM, a 25 mm bore double-acting mini cylinder equipped with needle-set air cushions at both ends. The stainless-steel round barrel and piston rod resist mild corrosion and washdown conditions. Dropping into standard ISO 6432 mini-cylinder brackets and clevises, it yields a push force of 245.3 N and a pull force of 206.1 N at 0.5 MPa.
For sizing loads, expect a safe working level around 147 N, or roughly 12.5 kg of vertical lift with a 2:1 margin. The 1/8" port and M10x1.25 male rod thread handle the 420 mm travel easily. Because the -S suffix adds a piston magnet, you can track position using CMSG, DMSG or EMSG switches. The CM round rear cover keeps port orientation clean for tight layouts.
| Model | Airtac MIC Cushioned Mini Cylinder MIC25X420SCM |
|---|---|
| Series | MIC ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 420 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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). |
|---|---|
| 25 | Bore size in mm. |
| ×420 | 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.
Snaps cardboard cartons across sorting lanes at speed, using the needle cushions to halt the 420 mm stroke softly without jarring the belt.
Drives a fill nozzle down into bottles, where the stainless build shrugs off washdown spray and the 245 N push force holds the nozzle firm.
Kicks molded parts out of a press area, relying on the -S magnet and a DMSG switch to confirm full ejection before the press cycles.
If your payload is lighter, the 20 mm bore MIC gives 157 N of push at 0.5 MPa, whereas heavy loads step up to the 32 mm bore at 402 N. This 25 mm bore hits a solid middle ground. The adjustable air cushion matters most when driving heavy masses at high speeds up to 800 mm/s, letting you dial out end-of-stroke bangs. Remember the cushion only decelerates near stroke end; it will not hold a load on air loss. For vertical or suspended loads, fit an external rod lock or pilot check valve to stop drift. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion blocks.
Quick checklist
At 0.5 MPa this 25 mm bore cylinder pushes 245.3 N and pulls 206.1 N. At 0.7 MPa push is 343.4 N and pull is 288.5 N. The theoretical max force is 50 kgf at 1.0 MPa. It uses a 1/8" port and an M10x1.25 male rod thread.
No. The adjustable air cushion only decelerates the piston near stroke end; it is not a brake or lock. If air is lost, the piston will drift. For suspended or vertical loads, install an external rod lock or pilot-operated check valve.
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