The AirTAC AirTAC SDA20X10S Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 10mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA20X10S is a double-acting single-rod compact cylinder engineered for tight axial spaces. It generates 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. The riveted unibody design drastically reduces overall length compared to conventional round-body units, making it ideal for shallow machine footprints. An 8 mm piston rod and M5x0.8 port ensure robust pneumatic integration.
Equipped with a built-in piston magnet (the -S option), this unit supports direct mounting of AirTAC reed or electronic switches along the body grooves for precise position sensing. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, effectively decelerating the 10 mm travel. Operating speeds span 30-500 mm/s across a 0.15-1.0 MPa pressure range.
| Model | AirTAC SDA20X10S Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 10 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 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 90 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 | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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. |
|---|---|
| 20 | Bore size in mm. |
| ×10 | 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).
Provides 157.1 N of push force to nudge and align delicate printed circuit boards within electronics assembly lines, utilizing the 10 mm stroke for rapid, short movements.
Actuates small sealing jaws on vertical form-fill-seal equipment where the 94 N safe working load is sufficient to close light packaging films without crushing the product.
Drives a precision tapping mechanism for automated liquid dispensers, using the built-in magnet to trigger an electronic switch and confirm the 10 mm dispense position.
Selecting this 20 mm bore involves sizing both ways: stepping down to the SDA16 yields 100.5 N push at 0.5 MPa, while stepping up to the SDA25 provides 245.4 N. The SDA20X10S provides a safe working load of roughly 94 N (about 60% of its 157.1 N capacity) and can vertically lift approximately 8 kg with a 2:1 safety margin. When ordering, confirm the 10 mm stroke, M5x0.8 port, female M4x0.7 rod thread, and the required -S magnet.
Keep in mind that a standard compact cylinder cannot hold a load if air pressure drops or the valve centers; the piston will drift. The fixed NBR bumper only decelerates the rod near the stroke end and does not function as a mechanical lock. If your application requires strict position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, the push force is 157.1 N and the pull force is 131.9 N. At 0.7 MPa, the push force is 219.9 N. The theoretical maximum push force is 32 kgf at 1.0 MPa, which is the maximum operating pressure.
No, it uses a fixed NBR bumper at each end to decelerate the stroke, not an adjustable air cushion. Additionally, it does not hold its load if air is lost; the piston drifts. For load holding, an external rod lock or pilot-operated check valve is required.
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