
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X250CM 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.
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy loads with precision. The stainless-steel barrel and rod resist mild corrosion and washdown environments. It features a CM round rear cover for straightforward port and mounting orientation. A 1/4" port feeds the 16 mm piston rod to drive substantial thrust.
Twin adjustable air cushions distinguish this unit from standard bumper models, letting you needle-set the deceleration to silence end-of-stroke bangs at high speed. Based on the 0.5 MPa push rating, it yields a safe working load of roughly 377 N, lifting about 32 kg vertically with a 2:1 safety margin. Note this SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors without switching to an -S variant.
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X250CM |
|---|---|
| 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.
| 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.
| 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.
Uses the 628.3 N push force to deflect heavy packed cartons on a high-speed sorting line, relying on the adjustable cushion to prevent harsh impact at the stroke end.
Folds large cardboard flaps on oversized pallets, where the 32 kg vertical lift capacity and stainless construction handle the rigorous washdown cycle.
Drives a heavy gravity roller gate in a distribution hub, using the needle-set air cushion to bring the 250 mm stroke to a smooth, quiet stop.
When sizing this 40 mm bore, dropping down to a MIC32 yields 402.2 N push at 0.5 MPa, while no larger MIC bore exists for heavier demands. The variable air cushion is essential if you cycle at high speeds or move heavy masses, as it protects the machinery from end-of-stroke shock. This cushion only decelerates the piston near stroke end; it does not lock or hold the load. If your application must prevent drift on air loss, install an external rod lock or a pilot-operated check valve.
You can mount this cylinder using LB foot, FA flange, SDB pivot, or TC trunnion hardware. Because this specific model has no -S suffix, it cannot accept position sensors. Choose the -S magnet version if your control system requires CMSG, DMSG, or EMSG switches.
Quick checklist
This 40 mm bore cylinder features a 1/4" port and a 16 mm rod with an M12x1.25 male thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot host CMSG, DMSG, or EMSG switches. You must select the -S variant to enable magnetic sensing. The adjustable air cushion at both ends only decelerates the load near stroke end and does not function as a brake or lock.
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