
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X80SU is a genuine double acting + cushion round-body mini air cylinder with a Ø40mm bore and 80mm 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 tackles heavy-duty actuation where a standard ISO 6432 unit falls short. The Ø40 bore operates on a 1/4" port and features a robust Ø16 piston rod with an M12x1.25 male thread. Because it is a larger round-body mini cylinder, it steps outside the ISO 6432 mounting envelope while retaining a compact riveted barrel that resists mild corrosion and washdown environments.
Twin adjustable air cushions at both stroke ends let you dial in the deceleration needle to silently absorb end-of-stroke shock at speeds up to 800 mm/s. This protects your payload far better than a fixed rubber bumper. Factoring a conservative safety margin, it handles a safe working load of roughly 377 N, lifting about 32 kg vertically. The -S suffix means a built-in piston magnet is present, ready for CMSG, DMSG or EMSG position switches.
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X80SU |
|---|---|
| Series | MIC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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. |
| ×80 | 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.
Swiftly pushes heavy packed cartons across a high-speed sorting line, using the adjustable cushion to stop the 80 mm stroke gently without jarring the conveyor frame.
Drives thick packaging flaps downward on a continuous flow wrapper, relying on the 628.3 N push force and washdown-resistant stainless rod to maintain cycle speed.
Acts as a robust pneumatic stop for loaded pallets entering a stretch wrapper, absorbing the heavy kinetic impact through the precision needle-set air cushion.
If 628.3 N of push at 0.5 MPa is excessive, stepping down to the MIC32 bore drops the output to 402.2 N; there is no larger standard MIC bore above 40 mm. Choose this 80 mm stroke variant when shifting heavier masses at high cycling rates, as the needle-set air cushion is essential for preventing end-of-stroke banging. The included U back cover provides a 90-degree mounting and port orientation for tight machinery layouts.
Bear in mind the adjustable cushion only decelerates the piston near the end of its travel and acts purely as a shock absorber, never as a lock or brake. If your application must hold a load vertically during a complete air loss or when a valve is centered, the piston will drift, requiring an external rod lock or a pilot-operated check valve. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion brackets.
Quick checklist
This double-acting cylinder uses a 1/4" air port. At 0.5 MPa it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa the push increases to 879.6 N and the pull to 738.9 N. The theoretical maximum force at 1.0 MPa is 128.1 kgf.
No, the adjustable air cushion only decelerates the piston near stroke end and does not act as a brake, so the load will drift on air loss; use a pilot check valve for holding. The -S suffix indicates a built-in magnet, allowing CMSG, DMSG or EMSG switches to be fitted for position sensing.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.