The AirTAC AirTAC SDA20X75S Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 75mm 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 SDA20X75S is a double-acting single-rod compact cylinder engineered for tight axial footprints. Its riveted assembly unites the barrel, rear cover, piston, and rod to minimize mounting depth where conventional round bodies cannot fit. At 20 mm bore, it generates 157.1 N of push force and 131.9 N of pull force at 0.5 MPa, operating within a 30-500 mm/s speed range.
This unit includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. The 8 mm piston rod features an M4x0.7 female thread, and end-stops rely on a fixed NBR bumper rather than an adjustable air cushion. With a 75 mm stroke, this model provides a safe working load of roughly 94 N (about 60% of the 0.5 MPa push figure) and can vertically lift around 8 kg with a 2:1 safety margin.
| Model | AirTAC SDA20X75S Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 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. |
| ×75 | 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).
Routes populated circuit boards with a 94 N safe working load, utilizing the 75 mm stroke to feed the cutting spindle precisely without excessive axial overhang.
Pushes lightweight parcels on a distribution line where the 131.9 N pull force easily retracts the 8 mm rod, fitting neatly into tight transfer conveyor frames.
Actuates a pipetting head over a 75 mm travel distance, relying on the built-in magnet to trigger solid-state sensors for accurate fluid volume metering.
When sizing this actuator, compare its output against adjacent bores: stepping down to the SDA16 yields 100.5 N push at 0.5 MPa, while moving up to the SDA25 provides 245.4 N. To finalize your order, confirm the 20 mm bore, 75 mm stroke, M5x0.8 port, built-in magnet (S), and female rod thread. Keep in mind that a standard cylinder drifts when air pressure is lost or the valve is centered—the fixed bumper only decelerates the piston near stroke end. If your process must hold a load without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 20 mm bore double-acting cylinder provides 157.1 N push and 131.9 N pull at 0.5 MPa, 219.9 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum push of 32 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa, proof pressure is 1.5 MPa, and the operating speed spans 30-500 mm/s.
No, it uses a fixed NBR bumper at each end to decelerate the stroke. This bumper is not field-adjustable and acts only as an end-stop, not a lock or brake. 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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