The AirTAC AirTAC SDA20X5S Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 5mm 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 SDA20X5S is a double-acting, single-rod compact cylinder engineered for extremely tight axial spaces. It delivers a push force of 157.1 N and a pull force of 131.9 N at 0.5 MPa. The riveted body design significantly reduces overall mounting length compared to round-body alternatives, making it ideal for dense machinery layouts where every millimeter counts.
This unit includes a built-in piston magnet (-S) for direct compatibility with AirTAC reed or electronic switches housed in the body grooves. Stroke deceleration is handled by a fixed NBR bumper at each end rather than an adjustable air cushion. The 8 mm piston rod features a female M4x0.7 thread end, and the M5x0.8 port ensures reliable pneumatic flow across the 30-500 mm/s speed range.
| Model | AirTAC SDA20X5S Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 5 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. |
| ×5 | 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).
Uses the 5 mm stroke to nudge printed circuit boards into exact alignment on a pick-and-place conveyor without consuming valuable Z-axis height.
Applies brief 157.1 N clamping pressure to hold packaging film steady against a heat sealing bar during the bag forming cycle.
Pinches flexible silicone tubing to meter reagents, leveraging the short body length to fit densely packed diagnostic analyzer carousels.
Selecting this 20 mm bore involves balancing your force and spatial requirements. Stepping down, the SDA16 provides 100.5 N of push force at 0.5 MPa, while stepping up to the SDA25 yields 245.4 N at the same pressure. This SDA20X5S offers a safe working load of roughly 94 N (about 60% of its 157.1 N capacity) and can vertically lift approximately 8 kg with a 2:1 safety margin. Keep in mind that a standard compact cylinder drifts when air pressure is lost or the valve is centered; 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. When ordering, confirm the 20 mm bore, 5 mm stroke, M5x0.8 port, female rod thread, and the required magnetic sensor option.
Quick checklist
This double-acting cylinder generates 157.1 N push and 131.9 N pull at 0.5 MPa, increasing to 219.9 N push and 184.7 N pull at 0.7 MPa. The theoretical maximum push force is 32 kgf at 1.0 MPa. It operates on filtered air between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and functions in environments from -20 to +70 C.
No, the SDA20X5S relies on a fixed NBR bumper at each end to absorb impact energy; it is not equipped with an adjustable air cushion. For high-speed or high-energy cycles, you should either reduce the approach speed or install an external shock absorber to prevent premature wear.
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