Airtac MIC Cushioned Mini Cylinder MIC40X125U
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X125U 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 MIC40X125U
Delivering robust linear motion, this double-acting round-body mini cylinder features a stainless-steel barrel and rod to resist mild corrosion and washdown environments. A defining trait of the MIC series is the adjustable air cushion at both ends, letting you tune a needle valve to smoothly decelerate heavy loads at high speeds, cutting shock and noise. It is a riveted, round-body build, not a tie-rod or profile design.
In the 40 mm bore class, 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 at 1.0 MPa. For practical sizing, this translates to a safe working load of roughly 377 N, or lifting about 32 kg vertically with a 2:1 safety margin. The unit features a 1/4" port, a 16 mm piston rod, and a U-style 90-degree rear cover for specific mounting orientations. Note this base SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors; you must specify the -S variant for position sensing.
Airtac MIC Cushioned Mini Cylinder MIC40X125U Technical Specifications
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X125U |
|---|---|
| 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 MIC40X125U
| 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 MIC40X125U Is Used
Heavy Carton Diverting
Handles the lateral push force needed to divert heavy packaged goods on a high-speed sorting line, using the adjustable cushion to stop the 125 mm stroke smoothly without slamming.
Pallet Flap Folding
Folds large cardboard flaps on oversized pallets, where the 628.3 N push force at 0.5 MPa easily overcomes stiff material before the cushion softens the stroke end.
Vertical Lift Gate
Raises a lightweight access gate on a 90-degree U pivot, lifting about 32 kg safely with a 2:1 margin while the stainless build survives humid warehouse air.
Is the Airtac MIC Cushioned Mini Cylinder MIC40X125U the Right Cylinder?
When sizing this 40 mm bore, dropping down to the MIC32 yields 402.2 N of push force at 0.5 MPa, while the MIC40 is the largest available bore in this series, so no larger standard option exists. Choose this model when moving heavier masses at high travel speeds, as the adjustable air cushion is critical for preventing end-of-stroke impact damage where a simple bumper would fail. Speeds range from 30 to 800 mm/s.
Because this is a double-acting cylinder, it does not hold position or load upon air loss; the piston will drift, and the cushion only decelerates near the stroke end, acting purely as a shock absorber rather than a brake. If your application requires a suspended load, install an external rod lock or a pilot-operated check valve. For mounting flexibility beyond the U back cover, you can utilize 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 MIC40X125U FAQ
This 40 mm bore cylinder uses a 1/4" port and a 16 mm rod. At 0.5 MPa it provides 628.3 N push and 527.8 N pull. At 0.7 MPa it provides 879.6 N push and 738.9 N pull. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must purchase 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.
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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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Most inquiries answered within 7-8 hours.
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