The AirTAC AirTAC SDA20X30S Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 30mm 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 SDA20X30S is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly integrates the barrel, rear cover, piston, and rod to drastically reduce axial mounting depth compared to round-body units. Delivering 157.1 N of push force at 0.5 MPa, it features a hard-anodized 20 mm bore and an 8 mm piston rod.
This specific configuration includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow high-speed approaches or add external shock absorbers to manage impact energy.
| Model | AirTAC SDA20X30S Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 30 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. |
| ×30 | 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 the 157.1 N push force required to actuate the tooling gate on an automated PCB depaneling machine, fitting neatly into the electronics assembly cell.
Drives the folding mechanism on a small case erector, utilizing its 30 mm stroke and compact riveted body to save space within the packaging line framework.
Actuates the metering valve on a benchtop liquid dispensing station, where the built-in magnet triggers a solid-state sensor for precise volume dosing.
When sizing this 20 mm bore unit, consider stepping down to the SDA16 which yields 100.5 N push at 0.5 MPa, or moving up to the SDA25 which provides 245.4 N push at 0.5 MPa. For the SDA20X30S, a safe working load is approximately 94 N (about 60% of the 157.1 N figure), translating to a vertical lift capacity of roughly 8 kg with a 2:1 safety margin.
Confirm your ordering essentials: 20 mm bore, 30 mm stroke, M5x0.8 port, female M4x0.7 rod thread, and the integrated magnet. Note that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates the stroke end and does not function as a lock. Use an external rod lock or pilot-operated check valve if the application requires strict load holding.
Quick checklist
This double-acting 20 mm bore cylinder generates 157.1 N push and 131.9 N pull at 0.5 MPa, and 219.9 N push at 0.7 MPa. The theoretical maximum push is 32 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and runs at speeds of 30-500 mm/s.
No, the SDA20X30S uses a fixed NBR bumper at each end to decelerate the piston, not an adjustable air cushion. For high-speed or high-energy cycles, you should slow the approach speed or install an external shock absorber to prevent damage.
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