The AirTAC AirTAC SDA63X20S Compact Cylinder | 63mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm bore and 20mm stroke, PT1/4 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA63X20S is a double-acting, single-rod compact cylinder engineered to deliver a robust 1558.6 N push force at 0.5 MPa. Its riveted assembly securely joins the barrel, rear cover, piston, and rod, drastically reducing overall axial length to save valuable machine footprint where a conventional round-body unit would not fit. The 63 mm bore features a hard-anodized inner wall and a two-way piston seal for extended operational life.
This specific configuration includes the S option, meaning it has a built-in piston magnet for position detection via AirTAC reed or electronic switches mounted in the body grooves. The 20 mm stroke is governed by a fixed NBR bumper at each end to decelerate the piston near stroke limits. Because this bumper is not an adjustable air cushion, operators should slow the approach or add external shock absorbers for high-energy cycles.
| Model | AirTAC SDA63X20S Compact Cylinder | 63mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 120 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×20 | 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 a short 20 mm ejection stroke inside tight mold platens, utilizing the compact riveted body to minimize axial mounting depth while delivering 1558.6 N of push force to knock out plastic parts.
Actuates a high-speed routing flap on a packaging line, where the built-in magnet triggers an electronic switch to confirm gate position and the fixed NBR bumper absorbs the rapid end-stop impact.
Functions as a heavy-duty physical stop pin to halt 79.4 kg pallets on a vertical lift station, requiring a pilot-operated check valve to prevent the load from drifting downward if supply pressure drops.
Selecting this 63 mm bore model provides a safe working load of roughly 935 N (about 60% of the 1558.6 N push at 0.5 MPa), translating to a vertical lift capacity of approximately 79.4 kg with a 2:1 safety margin. If your application requires less force, the SDA50 offers 981.7 N at 0.5 MPa; stepping up to the SDA80 provides 2513.3 N for heavier demands. A plain SDA cylinder does not hold its load when air is lost or the valve is centred, so an external rod lock or pilot-operated check valve is required for fail-safe holding.
When ordering, confirm the 63 mm bore, 20 mm stroke, PT1/4 port, and the female M10x1.5 rod-end thread. This unit includes the -S magnet code for switch sensing, while the rod end uses the default female thread configuration.
Quick checklist
The double-acting single-rod SDA63X20S generates a push force of 1558.6 N and a pull force of 1401.5 N at 0.5 MPa. At 0.7 MPa, the push force is 2182.1 N. The theoretical maximum push force is 318 kgf at the maximum operating pressure of 1.0 MPa.
No, the SDA series uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits; it is not an adjustable air cushion. For high-speed or high-energy applications, you should slow the approach speed or install an external shock absorber.
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