The AirTAC AirTAC SDA20X5BH 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 SDA20X5BH is a double-acting compact cylinder engineered for extremely tight axial spaces, delivering a 157.1 N push at 0.5 MPa. Its riveted body assembly minimizes mounting depth compared to conventional round designs, while the hard-anodized bore ensures durability. This specific configuration includes a male M6x1.0 piston rod end and utilizes fluororubber (FKM) seals for enhanced thermal and oil resistance.
Because this 20mm bore unit uses a fixed NBR bumper at each end rather than an adjustable air cushion, high-speed approaches require external shock absorption or slower speeds. The 5mm stroke yields a safe working load around 94 N (roughly 60% of the 0.5 MPa push figure), making it ideal for vertical lifts up to 8 kg with a 2:1 safety margin. Note that this SKU lacks a piston magnet, so position sensing is not supported without the -S option.
| Model | AirTAC SDA20X5BH 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).
Provides a precise 5mm contact stroke for probing populated circuit boards, where the FKM seals resist flux vapors and the short body conserves tester height.
Drives small horizontal sealing jaws on vertical form-fill machines, using the 157.1 N force to crimp thin packaging films without crushing the product.
Acts as a compact ejector pin in semiconductor handling modules, rapidly pushing delicate silicon wafers or chips out of a carrier pocket within a 30-500 mm/s speed range.
When sizing this 20mm bore actuator, consider stepping down to the SDA16 which provides 100.5 N push at 0.5 MPa, or moving up to the SDA25 which offers 245.4 N push at 0.5 MPa. Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates the piston near stroke end rather than locking it; holding a load requires an external rod lock or pilot-operated check valve.
To order correctly, confirm your requirements for the 20mm bore, 5mm stroke, M5x0.8 port, male M6x1.0 rod thread (B), and the FKM seal option (H). Since this variant omits the magnet code, it cannot accept reed or electronic switches.
Quick checklist
This 20mm bore double-acting cylinder provides a push force of 157.1 N and a pull force of 131.9 N at 0.5 MPa. At 0.7 MPa, the push force is 219.9 N. The theoretical maximum push force is 32 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and functions at speeds from 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot support reed or electronic switches. You would need to specify the -S option to add a magnet for sensing. Additionally, it uses a fixed NBR bumper to decelerate the stroke end, which is not an adjustable air cushion.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.