The AirTAC AirTAC SDA20X80B Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 80mm 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 SDA20X80B is a double-acting single-rod compact cylinder engineered for tight machinery footprints. By utilizing a short riveted body assembly instead of a conventional round-body design, it drastically reduces required axial mounting depth while delivering 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. This specific SKU features an 8 mm piston rod with a male M6x1.0 thread end for straightforward load coupling.
This model moves an 80 mm stroke within its hard-anodized bore, operating at speeds between 30 and 500 mm/s. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning high-energy cycles may require an external shock absorber. Because this configuration omits the -S magnet code, it cannot directly host AirTAC reed or electronic switches.
| Model | AirTAC SDA20X80B Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 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. |
| ×80 | 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).
Uses the 80 mm stroke and 157.1 N push force to extend a routing flap on a packaging conveyor, fitting neatly into the machine's slim side frame.
Actuates a small cutting gate on an electronics assembly line, where the male M6x1.0 rod end secures the tooling and the short body saves axial depth.
Pushes tested vials out of a centrifuge carousel, relying on the fixed NBR bumper to decelerate the 80 mm extension without harsh impact.
When sizing this 20 mm bore actuator, 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 at the same pressure. Based on the 157.1 N push figure, the computed safe working load is approximately 94 N (60% capacity), which translates to a vertical lift capability of about 8 kg with a 2:1 safety margin. Keep in mind that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only slows the piston near stroke end and does not function as a locking brake, so an external rod lock or pilot-operated check valve is necessary for strict position holding.
To finalize your RFQ, confirm this exact configuration: 20 mm bore, 80 mm stroke, M5x0.8 air port, male M6x1.0 piston rod thread (indicated by the B option), and no sensor magnet.
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. It operates on filtered air between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and supports a speed range of 30-500 mm/s.
No, this specific SKU lacks the internal piston magnet. To use AirTAC reed or electronic switches, you must select the SDA20X80BS variant which includes the -S magnet option. Additionally, this unit uses a male M6x1.0 threaded rod end instead of the default female M4x0.7.
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