Airtac MIC Cushioned Mini Cylinder MIC40X400U
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X400U 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.
- BoreØ40 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MIC Cushioned Mini Cylinder MIC40X400U
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy loads across its 400 mm stroke. The stainless-steel barrel and Ø16 mm piston rod resist mild corrosion and washdown environments. It features a 1/4" port and a male M12x1.25 rod thread. A U-style back cover provides a 90-degree mounting orientation for compact installations.
A defining trait of the MIC series is the adjustable air cushion at both ends. By turning a needle valve, you tune the deceleration to absorb high-speed end-of-stroke shock, protecting the machinery and lowering noise compared to a fixed bumper. Based on the 0.5 MPa push rating, this actuator yields a safe working load of roughly 377 N, lifting about 32 kg vertically with a 2:1 safety margin. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG sensors.
Airtac MIC Cushioned Mini Cylinder MIC40X400U Technical Specifications
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X400U |
|---|---|
| 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.
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac MIC Cushioned Mini Cylinder MIC40X400U
| 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.
Where the Airtac MIC Cushioned Mini Cylinder MIC40X400U Is Used
Heavy Carton Diversion
Pushes heavy packaged goods at high speed across a sorting line, relying on the tuned air cushion to stop the 400 mm stroke without slamming.
Vertical Material Lowering
Lowers a 30 kg fixture smoothly using the 628.3 N push force, while the adjustable cushion prevents sudden drops at the bottom of the travel.
Washdown Gate Actuation
Drives a stainless-steel access gate in a damp food processing area, benefiting from the corrosion-resistant round-body build and 1/4" port.
Is the Airtac MIC Cushioned Mini Cylinder MIC40X400U the Right Cylinder?
When sizing this 40 mm bore actuator, stepping down to the MIC32 bore drops the 0.5 MPa push force to 402.2 N, while no larger MIC bore exists. The adjustable cushion matters most when driving heavy masses at high speeds up to 800 mm/s, preventing harsh impacts. This model carries a U-style 90-degree rear cover; you can also use LB foot, FA flange, SDB pivot, or TC trunnion mounts. Because this specific SKU has no -S suffix, magnetic position sensing is unavailable.
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 when a valve is centered, the piston will drift. You should add an external rod lock or a pilot-operated check valve to secure the payload safely.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MIC Cushioned Mini Cylinder MIC40X400U FAQ
This 40 mm bore cylinder uses a 1/4" port. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, this specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG switches. You would need the -S variant for sensing. The adjustable air cushion at both ends only decelerates the load near stroke end and does not lock or hold the position on air loss.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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