
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X50U is a genuine double acting + cushion round-body mini air cylinder with a Ø40mm bore and 50mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Dial in end-of-stroke deceleration on heavy actuators with the AirTAC MIC40X50U. Built as a double-acting, round-body stainless-steel mini cylinder, it replaces fixed bumpers with a needle-set variable air cushion at both ends. This soaks up kinetic energy at high speeds to protect your payload and cut workshop noise. The stainless barrel and rod resist mild corrosion and washdown environments.
As the largest bore in the MIC family, this Ø40 unit uses a 1/4" port and a Ø16 piston rod with an M12x1.25 male thread. It pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa. For vertical moves, that translates to lifting about 32 kg safely with a 2:1 margin. This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG sensors. The U back cover provides a 90-degree port and mounting orientation.
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X50U |
|---|---|
| Series | MIC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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. |
| ×50 | 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.
Shift heavier cartons at high speed across a transfer station; the needle-set air cushion absorbs the impact at stroke end to prevent jarring.
Lower a 30 kg fixture safely; the 628.3 N push force at 0.5 MPa handles the load while the cushion prevents slamming at the bottom.
Index parts in a mildly humid or splash-prone area; the stainless steel round-body construction holds up better than standard carbon steel bodies.
When sizing this 40 mm bore, dropping down to the MIC32X50 drops the 0.5 MPa push force to 402.2 N, while no larger MIC bore exists. Choose this model when moving heavier masses at high speeds where a fixed bumper would cause impact damage. The adjustable cushion needle lets you tune the deceleration curve, but remember it only slows the piston near the end of travel. It does not function as a brake.
If your process loses air or centers the valve, the piston will drift. To suspend a load safely, install an external rod lock or a pilot-operated check valve. Mount this cylinder using LB foot, FA flange, SDB pivot, or TC trunnion hardware. Because this base unit has no internal magnet, position sensing is impossible without switching to the -S variant.
Quick checklist
This double-acting cylinder pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. It uses a 1/4" air port and a Ø16 rod with an M12x1.25 male thread.
No, this specific SKU lacks the internal magnet, so CMSG, DMSG, or EMSG switches will not function. You must specify the -S variant to enable position sensing. The adjustable air cushion at both ends functions normally regardless of the magnet.
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