The AirTAC AirTAC SDA20X30SH 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 SDA20X30SH is a double-acting single-rod compact cylinder engineered where axial depth is restricted. A riveted assembly unites the barrel, rear cover, piston, and rod to shrink the footprint compared to round-body units. It provides 157.1 N push and 131.9 N pull at 0.5 MPa, yielding a safe working load near 94 N and a vertical lift capacity around 8 kg with a 2:1 margin.
This specific configuration includes a built-in magnet for position sensing alongside fluororubber (FKM) seals for heightened oil and thermal resistance. The 8 mm rod uses an M5x0.8 port and a female M4x0.7 thread. End stops rely on a fixed NBR bumper rather than an adjustable air cushion, so high-energy cycles require slowing the approach or fitting external shock absorbers.
| Model | AirTAC SDA20X30SH 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).
Actuates the cutting tool feed on an electronics assembly line, utilizing the 30 mm stroke and FKM seals to resist ambient flux vapors.
Closes the heated platen on a pharmaceutical packaging machine where the 157.1 N force is sufficient and the compact depth fits tight guarding.
Pivots a routing flap on a logistics conveyor, relying on the internal magnet to trigger reed or electronic switches for package tracking.
When sizing this 20 mm bore, stepping down to the SDA16 yields 100.5 N push at 0.5 MPa, while stepping up to the SDA25 provides 245.4 N. To confirm your ordering essentials for this build: 20 mm bore, 30 mm stroke, M5x0.8 port, female M4x0.7 rod thread, with the -S magnet and -H FKM seal options. Keep in mind that a standard compact body drifts when air pressure drops or the valve centers, as the fixed bumper only decelerates the stroke end rather than locking the load. If your process demands strict position holding without live pressure, incorporate an external rod lock or a pilot-operated check valve.
Quick checklist
This 20 mm bore 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 is 32 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa, with a proof pressure of 1.5 MPa.
No adjustable air cushion is featured; the cylinder relies on fixed NBR bumpers at each end to decelerate the piston. Additionally, it will not hold a load if air is lost, as the bumper is not a locking brake. For high speeds, use external shock absorbers, and for position holding, install a pilot-operated check valve.
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