The AirTAC AirTAC SDA20X75B Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 75mm 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 SDA20X75B is a double-acting, single-rod compact cylinder engineered to deliver 157.1 N of push force at 0.5 MPa. Its short riveted body drastically reduces axial mounting depth, making it ideal for machinery where a standard round-body unit would protrude too far. This specific SKU includes a male M6x1.0 piston rod thread for straightforward load coupling.
This 20 mm bore model features an M5x0.8 air port and a hard-anodized inner wall to minimize friction. End-stop deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning high-speed approaches may require external shock absorption. Because this configuration lacks the -S magnet option, it cannot directly host AirTAC reed or electronic switches.
| Model | AirTAC SDA20X75B Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 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. |
| ×75 | 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).
Actuates the cutting tool guide on an automated PCB depaneling machine, utilizing the 75 mm stroke and male M6 rod to maintain precise Z-axis depth control.
Pushes lightweight cardboard cartons onto a secondary packaging line, where the compact riveted body keeps the conveyor side-frame clear of obstructions.
Drives a small pipetting head in a clinical diagnostic analyzer, moving reagents with a safe 94 N working load to prevent vial breakage.
When sizing this actuator, stepping down to the SDA16 provides 100.5 N of push at 0.5 MPa, while stepping up to the SDA25 yields 245.4 N at the same pressure. Based on the 157.1 N output, the safe working load is approximately 94 N (roughly 60% capacity), which translates to a vertical lift capability of about 8 kg with a 2:1 safety margin. To finalize your order, confirm the 20 mm bore, 75 mm stroke, M5x0.8 port, male M6x1.0 rod thread, and no magnet.
Keep in mind that a standard double-acting cylinder does not inherently hold its position if air pressure drops or the directional valve is centered. The piston will drift, as the fixed NBR bumper only decelerates the stroke near the end limits and acts purely as an impact buffer, never as a mechanical lock. If your application demands strict position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 20 mm bore double-acting cylinder provides 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. It operates within a pressure range of 0.15-1.0 MPa and a speed range of 30-500 mm/s.
No, this specific SKU does not include the -S piston magnet, so it cannot host AirTAC reed or electronic switches. You would need the -S variant for position feedback. Additionally, end-stopping relies on a fixed NBR bumper, not an adjustable air cushion.
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