The AirTAC AirTAC SDA20X20BH Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 20mm 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 SDA20X20BH is a double-acting, single-rod compact cylinder engineered to deliver 157.1 N of push force at 0.5 MPa. Its riveted assembly minimizes axial mounting depth, fitting easily into tight machine footprints where conventional round bodies fail. This specific SKU features a male M6x1.0 piston rod for direct load coupling and an FKM fluororubber seal for enhanced thermal and oil resistance.
Instead of an adjustable air cushion, the bore relies on a fixed NBR bumper at each end to decelerate the stroke. Because this unit lacks the -S magnet option, it cannot host reed or electronic switches. Operating efficiently between 30-500 mm/s, it provides a safe working load of roughly 94 N and a vertical lift capacity near 8 kg with a 2:1 safety margin.
| Model | AirTAC SDA20X20BH Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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. |
| ×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).
Drives a routing blade with precise 20 mm travel to singulate printed circuit boards, utilizing the compact riveted body to fit within dense electronics assembly machinery.
Applies 157.1 N of clamping force at 0.5 MPa to seal medical blister packs, where the FKM seal withstands elevated ambient heat near the heating platen.
Ejects small plastic components from an injection mold cavity using the male M6x1.0 threaded rod end, offering a safe working load of approximately 94 N.
When sizing this 20 mm bore actuator, compare its 157.1 N push at 0.5 MPa against adjacent options. Stepping down, the SDA16 offers 100.5 N; stepping up, the SDA25 provides 245.4 N. To finalize your order, confirm the 20 mm bore, 20 mm stroke, M5x0.8 port, male M6 rod thread, and FKM seal. Keep in mind that a standard double-acting cylinder drifts if air pressure drops or the valve centers, as the fixed bumper only decelerates near stroke end rather than locking the load. For vertical or suspended loads requiring position holding, integrate an external rod lock or 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 force is 32 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU lacks the internal piston magnet, so it cannot trigger reed or electronic switches. You would need the -S variant for sensing, and you should also note that the fixed NBR bumper is not an adjustable air cushion.
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