
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X400SCM is a genuine double acting + cushion round-body mini air cylinder with a Ø40mm bore and 400mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Delivering serious push force for a compact frame, the AirTAC MIC40X400SCM generates 628.3 N of thrust at 0.5 MPa and up to 879.6 N at 0.7 MPa. This double-acting round-body mini cylinder pairs a 40 mm bore with a 400 mm stroke, utilizing a 1/4 inch port and a 16 mm piston rod to move loads swiftly. The stainless-steel barrel and rod construction provides reliable mild corrosion and washdown resistance without relying on a bulky tie-rod or extruded profile housing.
A defining feature of this unit is the adjustable air cushion at both ends, letting you dial in a needle valve to absorb end-of-stroke shock at high cycling speeds. This protects your machinery and quiets operations far better than a fixed rubber bumper. Factoring a 2:1 safety margin, it lifts about 32 kg vertically, making it a robust choice for heavier automation tasks. The CM round back cover cleanly manages port orientation for tight installations.
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X400SCM |
|---|---|
| Series | MIC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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. |
| ×400 | 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.
Uses the 628.3 N push force to positively deflect heavy cartons at high speed, relying on the adjustable air cushion to stop the 400 mm stroke smoothly without slamming.
Lifts roughly 32 kg of gate weight vertically using a 2:1 safety margin, where the stainless build resists humid warehouse air and washdown.
Drives sealing heads with a 16 mm rod and 1/4 inch port, using the needle-set cushions to prevent crushing the package at the end of a rapid 400 mm travel.
When sizing this 40 mm bore unit, stepping down to a 32 mm MIC bore drops the 0.5 MPa push force to 402.2 N, while no larger MIC bore exists above this. Choose this 879.6 N (at 0.7 MPa) model when moving heavier masses at high speeds where the adjustable end cushions can properly decelerate the load. Because the SKU includes the -S magnet, you can directly mount CMSG, DMSG, or EMSG sensors for position detection.
Remember that the air cushion only decelerates the piston near the stroke end; it does not function as a brake. If your application must hold a load vertically during air loss or valve centering, the piston will drift, requiring an external rod lock or pilot-operated check valve. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets to fit your frame.
Quick checklist
This double-acting round-body mini cylinder features a 40 mm bore, a 400 mm stroke, a 16 mm piston rod, and a 1/4 inch port. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, or 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.
No, the piston will drift if air is lost; the adjustable air cushion at both ends only decelerates the load near the stroke end and acts as a brake. For load holding, use an external rod lock or pilot check valve. The -S magnet allows CMSG, DMSG, or EMSG sensors, and the stainless steel build resists mild corrosion.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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