Airtac MIC Cushioned Mini Cylinder MIC40X125SU
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X125SU is a genuine double acting + cushion round-body mini air cylinder with a Ø40mm bore and 125mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke125 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 MIC40X125SU
Delivering 628.3 N of push force at 0.5 MPa, the AirTAC MIC40X125SU is a robust double-acting round-body mini cylinder built for heavy-duty automation. It features a stainless-steel barrel and Ø16 piston rod that resist mild corrosion and washdown environments. The integrated U-type back cover provides a 90-degree mounting orientation for tight machinery layouts. A 1/4" port feeds the bore, and the male rod thread is M12x1.25.
The 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 load and cutting noise far better than a fixed rubber bumper. For sizing, this 40 mm bore yields a safe working load of roughly 377 N, meaning it lifts about 32 kg vertically with a 2:1 safety margin. The built-in -S magnet supports CMSG, DMSG, and EMSG switches for position sensing.
Airtac MIC Cushioned Mini Cylinder MIC40X125SU Technical Specifications
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X125SU |
|---|---|
| Series | MIC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 MIC40X125SU
| MIC | round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 MIC40X125SU Is Used
Heavy Package Diverting
Handles the kinetic energy of heavy cartons on a high-speed sorting line, using the adjustable cushion to stop the 125 mm stroke smoothly without slamming.
Vertical Material Lowering
Lowers 30 kg fixtures safely on assembly stations, relying on the tuned air cushion to prevent crashing at the bottom of the stroke.
Pallet Case Packing
Drives heavy packing flaps and product pushers into corrugated cases, benefiting from the 628.3 N push force and washdown-resistant stainless build.
Is the Airtac MIC Cushioned Mini Cylinder MIC40X125SU the Right Cylinder?
When sizing this 40 mm bore, stepping down to a MIC32 yields 402.2 N of push force at 0.5 MPa, while this MIC40 provides 628.3 N at the same pressure. There is no larger MIC bore available. Choose this model when moving heavier masses at high cycling speeds where the adjustable needle cushion is essential to prevent impact damage. Keep in mind the cushion only decelerates the piston near the stroke end; it does not act as a brake. If your application must hold a load vertically during air loss, add an external rod lock or pilot-operated check valve. The -S magnet enables sensor tracking, and you can mount the body via LB foot, FA flange, SDB pivot, or 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 MIC40X125SU FAQ
This 40 mm bore double-acting cylinder has a 1/4" port and an M12x1.25 male rod thread. It generates 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 force of 128.1 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG switches. However, the adjustable air cushion only decelerates the piston near the stroke end and does not lock or hold the load. If air pressure drops, the piston will drift; use an external rod lock or pilot check valve to hold a vertical load.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
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