The AirTAC AirTAC SDA20X30SB 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 SDA20X30SB is a double-acting, single-rod compact cylinder engineered to deliver 157.1 N of push force at 0.5 MPa. Its riveted assembly significantly reduces axial mounting depth, providing a distinct footprint advantage in tight machine enclosures. This specific configuration includes a built-in piston magnet for position sensing and a male M6x1.0 threaded rod end for direct load coupling.
The bore is hard-anodized for longevity, operating at speeds between 30 and 500 mm/s. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Because this is a compact body with an 8 mm rod, avoiding side loading is critical to prevent premature seal wear.
| Model | AirTAC SDA20X30SB 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 extension needed to hold rigid circuit boards against a routing fixture during automated depaneling, utilizing the male M6 thread for tool mounting.
Actuates narrow carton side flaps on a compact packaging line where the short riveted body saves critical axial space between conveyor belts.
Moves a fluid dispensing head with precise 30 mm strokes, using the integrated magnet to trigger a reed or electronic switch for exact volume metering.
When sizing this unit, 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. Based on the 157.1 N output, the safe working load is approximately 94 N (about 60% capacity), translating to a vertical lift capability of roughly 8 kg with a 2:1 safety margin.
Remember that a standard SDA body does not maintain its position if air pressure drops or the valve is centered; the piston will drift. If your application demands load holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve. To order, confirm the 20 mm bore, 30 mm stroke, M5x0.8 port, built-in magnet (S), and male (B) rod thread.
Quick checklist
This double-acting 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 force is 32 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa and a speed range of 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits; it is not an adjustable air cushion. Furthermore, it cannot hold a load if air is lost, as the bumper is not a brake. An external shock absorber is recommended for high-energy cycles, and a pilot-operated check valve is needed for position holding.
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