
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X30U is a genuine double acting + cushion round-body mini air cylinder with a Ø40mm bore and 30mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Delivering 628.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles heavy-duty actuation within a compact 40 mm bore. The 1/4" port feeds the 16 mm piston rod, while the U-type back cover provides a 90-degree mounting orientation for tight machinery layouts. A variable air cushion at both ends lets you dial in the needle valve to absorb end-of-stroke kinetic energy, protecting payloads at high cycling speeds.
The stainless barrel and rod resist mild corrosion and washdown environments. Without a magnet, this specific SKU cannot accept position sensors; adding the -S variant enables CMSG, DMSG, or EMSG switches. For vertical applications, the 0.5 MPa push force yields a safe working load of roughly 377 N, lifting about 32 kg with a 2:1 safety margin.
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X30U |
|---|---|
| Series | MIC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 mm |
| Acting type | Double acting + cushion |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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. Note: the Ø40 bore is a larger, non-ISO-6432 size.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MIC | round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 loaded pallets or heavy cartons at high cycle rates, relying on the adjustable air cushion to prevent harsh impacts when stopping the 628.3 N thrust.
Drives packaging flaps downward with a safe working load near 377 N, using the 90-degree U cover to fit compact folder profiles.
Ejects machined parts in damp environments, leveraging the stainless steel construction to resist mild corrosion while handling the 32 kg vertical lift capacity.
When sizing this 40 mm bore, stepping down to the MIC32 drops the 0.5 MPa push force to 402.2 N, while no larger standard MIC bore exists above it. The adjustable cushion proves essential when moving heavy masses at high speeds, as the needle setting prevents harsh end-of-stroke impacts that a fixed bumper cannot absorb. Note that the cushion only decelerates the load near the stroke end; it does not function as a brake. Because this SKU lacks a magnet, it cannot support sensing switches, and for loads that must resist drifting on air loss, an external rod lock or pilot check valve is required.
Quick checklist
This 40 mm bore cylinder features a 1/4" port and a 16 mm rod. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
This specific SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG switches; you need the -S variant for sensing. The adjustable air cushion at both ends only decelerates the piston near stroke end to reduce shock and is not a brake or lock. To hold a load vertically on air loss, install an external rod lock or pilot check valve.
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