The AirTAC SDA20X100S Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 100mm 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 SDA20X100S is a double-acting, single-rod compact cylinder engineered to deliver 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. A 100 mm stroke maximizes travel within a minimal footprint, as the riveted assembly of the barrel, rear cover, and piston drastically reduces axial mounting depth compared to conventional round-body units. The bore is hard-anodized for longevity, operating smoothly at speeds between 30 and 500 mm/s.
This unit includes the -S option, meaning a built-in piston magnet enables position sensing via an AirTAC reed or electronic switch seated in the body grooves. End-stop deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. Because the 8 mm rod is relatively short, avoiding side loads is critical to prevent premature seal wear and binding.
| Model | AirTAC SDA20X100S Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 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. |
| ×100 | 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 guide on an electronic PCB depaneling machine, utilizing the 100 mm travel to reach across larger circuit boards while maintaining a low-profile footprint.
Pushes lightweight cardboard cartons from a main conveyor belt onto a secondary packaging line, providing sufficient 157.1 N push force at 0.5 MPa without consuming excessive frame space.
Drives a pipetting head in an automated clinical analyzer, using the built-in magnet for precise position confirmation and the compact body to fit within tight laboratory enclosures.
When sizing this 20 mm bore, stepping down to the SDA16 yields 100.5 N of push at 0.5 MPa, while stepping up to the SDA25 provides 245.4 N. To finalize your order, confirm the 20 mm bore, 100 mm stroke, M5x0.8 port, built-in magnet (S), and the default female M4x0.7 rod-end thread.
Keep in mind that a standard compact cylinder will not hold a load if air pressure drops or the valve is centered. The piston will drift, and the fixed NBR bumper only decelerates the stroke near its end without acting as a mechanical lock. If your application requires position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
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. The operating pressure range is 0.15-1.0 MPa, with a proof pressure of 1.5 MPa.
No, the SDA series 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 add an external shock absorber or slow down the approach speed to prevent damage.
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