The AirTAC AirTAC SDA20X30BH Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 30mm 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 SDA20X30BH is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly reduces axial mounting depth compared to conventional round-body units, yielding a theoretical push of 157.1 N at 0.5 MPa (219.9 N at 0.7 MPa). This specific SKU includes an FKM fluororubber seal for enhanced thermal and oil resistance, operating within the standard -20 to +70 C range.
Equipped with a male M6x1.0 threaded piston rod rather than the default female M4x0.7, it simplifies direct mechanical coupling to tooling. The bore features a hard-anodized inner wall and M5x0.8 ports. End-stops rely on a fixed NBR bumper to decelerate the piston, which is not an adjustable air cushion. Because this configuration lacks the -S magnet, it cannot host reed or electronic switches.
| Model | AirTAC SDA20X30BH Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 30 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. |
| ×30 | 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 the 157.1 N push force required to actuate the cutting head feed on a printed circuit board depaneling machine, where the FKM seals resist ambient flux oil vapors.
Drives the 30mm stroke heat platen on a small-scale blister packaging line, fitting within the narrow frame while the male M6 rod secures the heated tooling.
Actuates a lightweight routing flap on a package conveyor diverter, using its compact riveted body to fit between adjacent belt rollers without axial interference.
When sizing this 20mm bore actuator, consider stepping down to the SDA16, which provides 100.5 N of push at 0.5 MPa, or moving up to the SDA25, which yields 245.4 N at the same pressure. For the SDA20X30BH, verify your ordering essentials: 20mm bore, 30mm stroke, M5x0.8 port, male M6x1.0 rod thread, and FKM seals. Based on the 157.1 N output at 0.5 MPa, the safe working load is approximately 94 N (60% capacity), translating to a vertical lift capability of about 8 kg with a 2:1 safety margin.
Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the directional valve is centered. The fixed NBR bumper only decelerates the stroke near its end point and does not function as a locking brake. If your application requires strict position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
Quick checklist
This 20mm bore double-acting cylinder generates 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 increases to 219.9 N. The theoretical maximum push is 32 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, and the speed range is 30-500 mm/s.
No, this specific SKU lacks the internal piston magnet, so it cannot host AirTAC reed or electronic switches. You would need the -S variant for position sensing. Additionally, end-of-stroke deceleration is handled by a fixed NBR bumper, not an adjustable air cushion, so external shock absorbers may be needed for high-speed loads.
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