Airtac MIC Cushioned Mini Cylinder MIC40X250U
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X250U is a genuine double acting + cushion round-body mini air cylinder with a Ø40mm bore and 250mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke250 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 MIC40X250U
Delivering 628.3 N of push force at 0.5 MPa, the AirTAC MIC40X250U is a robust double-acting round-body mini cylinder built for demanding actuation. It features a 40 mm bore, a 250 mm stroke, and a U-style 90-degree rear cover for specific mounting orientations. The stainless-steel barrel and Ø16 mm piston rod provide reliable mild corrosion and washdown resistance, making it far more durable than basic alternatives. Operating via a 1/4" port, it handles speeds from 30 to 800 mm/s.
The defining feature of this series is the adjustable air cushion at both ends, allowing you to tune a needle valve to absorb end-of-stroke shock at high speeds. This protects the load and cuts noise significantly compared to a fixed bumper. As a practical buyer insight, it yields a safe working load of roughly 377 N, lifting about 32 kg vertically with a 2:1 safety margin. Note that this non-magnetic SKU cannot take a sensor; adding the -S variant enables CMSG, DMSG, or EMSG switches.
Airtac MIC Cushioned Mini Cylinder MIC40X250U Technical Specifications
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X250U |
|---|---|
| Series | MIC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 MIC40X250U
| MIC | round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 MIC40X250U Is Used
High-Speed Diverters
Drives heavy packages along sorting lines using its 628.3 N push force, relying on the tuned air cushion to stop the 250 mm stroke smoothly without jarring the belt.
Carton Erectors
Folds and secures large carton blanks at rapid cycle rates, where the stainless construction handles dusty environments and the cushion prevents end-of-stroke impact damage.
Pallet Stop Arms
Halts loaded pallets on conveyors using a safe working load of 377 N, absorbing the kinetic energy safely via the adjustable needle valves at both ends.
Is the Airtac MIC Cushioned Mini Cylinder MIC40X250U the Right Cylinder?
When sizing this 40 mm bore unit, the next size down is the MIC32, which provides 402.2 N of push force at 0.5 MPa, while the MIC40 represents the largest available bore in this series with no larger standard option. Choose this 40 mm model when moving heavier masses at high velocities, as the adjustable air cushion is essential for smoothing out the 250 mm stroke and preventing harsh impacts. Remember that the 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, you must fit an external rod lock or a pilot-operated check valve.
For installation, this cylinder supports LB foot, FA flange, SDB pivot-block, and TC trunnion mounts, alongside CA, U, R, and CM back covers. Because this specific SKU lacks the internal magnet, it cannot accept position sensors; you must select the -S magnet version to use CMSG, DMSG, or EMSG switches.
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 MIC40X250U FAQ
This 40 mm bore cylinder features a 1/4" port and an M12x1.25 male rod thread. 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 does not include a magnet and cannot accept CMSG, DMSG, or EMSG switches. You must order the -S variant for position sensing. The adjustable air cushion at both ends functions only to decelerate the load near the stroke end, not to hold it; use a pilot check valve for load holding.
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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