The AirTAC AirTAC SDA20X80S Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 80mm 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 SDA20X80S is a double-acting, single-rod compact cylinder engineered to deliver 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, and piston into a highly abbreviated unit, drastically reducing axial mounting depth compared to conventional round-body designs. The 20 mm bore features a hard-anodized inner wall and an 8 mm piston rod.
Equipped with a built-in piston magnet (-S), this model supports AirTAC reed or electronic switches via the body grooves for precise position detection. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning operators should moderate approach speeds or utilize external shock absorbers for high-energy loads. Operating efficiently between 30-500 mm/s, it handles a safe working load of roughly 94 N and can vertically lift about 8 kg with a 2:1 safety margin.
| Model | AirTAC SDA20X80S Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 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. |
| ×80 | 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).
Pushes small cartons onto secondary packaging lines using the 80 mm stroke, relying on the 157.1 N extend force to shift lightweight boxes without bounce.
Secures delicate printed circuit boards during automated soldering or inspection, utilizing the magnetic sensor to confirm clamp engagement.
Ejects processed vials from testing carousels, where the short body length preserves valuable equipment footprint and the fixed bumper softens the ejection stop.
When sizing this actuator, evaluate your force requirements carefully: stepping down to the SDA16 yields 100.5 N of push at 0.5 MPa, while moving up to the SDA25 provides 245.4 N. This SDA20X80S configuration includes an 80 mm stroke (within the 100 mm standard limit for this bore), an M5x0.8 port, and a female M4x0.7 rod-end thread. Be aware that a standard compact cylinder cannot maintain a load if air pressure drops or the valve is centered; the piston will drift. For suspended or vertical loads that must hold position without live pressure, 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, with an operating pressure range of 0.15-1.0 MPa.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion; for high-speed cycling, add external shock absorption. The built-in magnet allows tracking by AirTAC reed or electronic switches mounted in the body grooves.
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