The AirTAC AirTAC SDA40X5S Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 5mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA40X5S is a double-acting, single-rod compact cylinder engineered for minimal axial mounting depth. Its riveted body assembly drastically reduces overall length compared to round-body alternatives, making it ideal for tight machine footprints. In this 40mm bore class, it generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa.
This specific model includes a built-in piston magnet (-S) for position sensing using AirTAC reed or electronic switches mounted in the body grooves. End-stop deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. The 16mm piston rod features a female M8x1.25 thread, and the air supply connects via a PT1/8 port.
| Model | AirTAC SDA40X5S Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 5 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 male (B) |
| 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 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 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.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×5 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Pins small molded plastic parts out of a die using a rapid 5mm stroke, relying on the 628.3 N push force to break the component free.
Secures circuit boards during wave soldering, utilizing the built-in magnet and a reed or electronic switch to verify the clamp is closed before processing.
Drives dowel pins into aluminum fixtures, where the 16mm rod resists deflection and the fixed NBR bumper absorbs the sudden end-stop impact.
Selecting this 40mm bore provides a robust middle ground: it steps up from the SDA32 (402.1 N push at 0.5 MPa) and offers a more compact footprint than the SDA50 (981.7 N push at 0.5 MPa). For the 628.3 N output at 0.5 MPa, a safe working load is roughly 377 N, or a vertical lift of about 32 kg with a 2:1 safety margin. If your application must hold a load vertically without live pressure, note that the piston will drift on air loss; an external rod lock or pilot-operated check valve is required. When ordering, confirm the 5mm stroke, PT1/8 port, female M8x1.25 rod thread, and the required -S magnet.
Quick checklist
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, the push force is 879.6 N and the pull force is 738.9 N. The theoretical maximum push force is 128 kgf at 1.0 MPa.
No, it uses a fixed NBR bumper at each end to decelerate the piston near the stroke end. It is not an adjustable air cushion, so for high-speed or high-energy cycles, you should add an external shock absorber or slow the approach speed.
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