Airtac MIC Cushioned Mini Cylinder MIC40X400SU
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X400SU 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 MIC40X400SU
Delivering robust push force, the AirTAC MIC40X400SU is a double-acting round-body mini cylinder built with a stainless-steel barrel and rod for mild washdown resistance. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa, peaking at a theoretical 128.1 kgf. The 1/4" port and M12x1.25 male rod thread equip this 40 mm bore unit for heavy-duty tasks.
The defining feature of this series is the adjustable air cushion at both ends. By turning the cushion needle, you tune the deceleration to absorb end-of-stroke shock at high speeds, protecting the load and reducing noise compared to a fixed bumper. For practical sizing, expect a safe working load around 377 N, which means it lifts about 32 kg vertically with a 2:1 safety margin. The U back cover provides a 90-degree mounting orientation, and the -S suffix indicates a built-in magnet for CMSG, DMSG or EMSG switches.
Airtac MIC Cushioned Mini Cylinder MIC40X400SU Technical Specifications
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X400SU |
|---|---|
| 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 MIC40X400SU
| 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 MIC40X400SU Is Used
Heavy Package Diversion
Handles robust 30 kg cartons on a high-speed sorting line, using the adjustable cushions to stop the 400 mm travel smoothly without slamming.
Vertical Lift Gate
Raises and lowers an access gate, relying on the 628.3 N push force and stainless construction to withstand dusty, mildly humid industrial environments.
Pneumatic Pressing Stand
Applies steady clamping pressure on an assembly fixture, with the U back cover allowing a 90-degree mount to save floor space.
Is the Airtac MIC Cushioned Mini Cylinder MIC40X400SU the Right Cylinder?
When sizing this 40 mm bore, stepping down to a MIC32 bore drops the 0.5 MPa push force to 402.2 N, while no larger MIC bore exists. The 400 mm stroke operates comfortably within the 500 mm maximum standard stroke limit. The adjustable air cushion is essential here because the long travel and heavy payload generate significant kinetic energy at high cycling speeds.
Remember that the air cushion only decelerates the piston near the stroke end; it is not a brake. If air pressure drops, the piston will drift, so install an external rod lock or pilot-operated check valve to hold a vertical load safely. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets.
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 MIC40X400SU FAQ
This 40 mm bore cylinder features a 1/4" port and an M12x1.25 male rod thread. It delivers 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
No, the piston will drift on air loss because the cylinder is not a lock or brake. You must add an external rod lock or pilot check valve for holding. The adjustable air cushion at both ends only decelerates the piston near the stroke end to reduce shock and noise.
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Genuine AirTAC parts produced by AirTAC factory.
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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Most inquiries answered within 7-8 hours.
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