The AirTAC AirTAC SDA20X80 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 SDA20X80 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, making it suitable for light-duty positioning tasks. The hard-anodized bore and two-way piston seal ensure reliable service within its 30-500 mm/s speed range.
This model features an 8 mm piston rod and an M5x0.8 air port. Its short riveted body saves mounting depth compared to round-body units. End stopping relies on a fixed NBR bumper that decelerates the piston near stroke end; it is not an adjustable air cushion. This specific SKU lacks a piston magnet, so it cannot support magnetic sensing without switching to the -S variant.
| Model | AirTAC SDA20X80 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 a carrier fixture along an 80 mm track to separate routed circuit boards, utilizing the 157.1 N extend force within a compact electronics assembly cell.
Actuates a short 80 mm swing gate to redirect small parcels between sorting lanes, where the minimal axial length prevents interference with adjacent belt rollers.
Advances a test tube rack by 80 mm increments into a measurement station, taking advantage of the smooth hard-anodized bore and predictable stopping provided by the NBR bumper.
When sizing this unit, stepping down to the SDA16 yields 100.5 N of push at 0.5 MPa, while stepping up to the SDA25 provides 245.4 N. The 157.1 N output at 0.5 MPa translates to a safe working load of roughly 94 N (about 60% capacity) or a vertical lift of approximately 8 kg with a 2:1 safety margin. To finalize your order, confirm the 20 mm bore, 80 mm stroke, M5x0.8 port, female M4x0.7 rod thread, and the absence of a magnet. Note that a plain cylinder drifts when air is lost or a valve is centered; the fixed bumper only decelerates near the end of travel and does not act as a lock or brake. Use an external rod lock or pilot-operated check valve if the application requires position holding.
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 is 219.9 N. The theoretical maximum push is 32 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa and a proof pressure of 1.5 MPa.
No, this specific SKU is built without a piston magnet. To use AirTAC reed or electronic switches in the body grooves, you must specify the SDA20X80S variant. Additionally, the end stop uses a fixed NBR bumper rather than an adjustable air cushion, so external shock absorbers are recommended for high-speed loads.
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