Airtac SDA Ultra Thin Cylinder SDA12X20B
The AirTAC Airtac SDA Ultra Thin Cylinder SDA12X20B is a genuine double-acting COMPACT (thin) air cylinder with a Ø12mm 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.
- BoreØ12 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM3×0.5 (F) / M5×0.8 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac SDA Ultra Thin Cylinder SDA12X20B
The AirTAC SDA12X20B is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. It generates 56.5 N of push force and 42.4 N of pull force at 0.5 MPa, yielding a safe working load of roughly 34 N or a 2.9 kg vertical lift with a 2:1 margin. Its short riveted body significantly reduces axial mounting depth compared to conventional round-body units.
This specific SKU features a male M5x0.8 piston rod thread for direct load coupling and utilizes an M5x0.8 air port. End-of-stroke 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 model lacks the -S magnet option, it cannot support magnetic position sensing.
Airtac SDA Ultra Thin Cylinder SDA12X20B Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA12X20B |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø12 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 50 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).
Theoretical Output Force (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | — |
| Max (@1.0 MPa) | 12 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SDA Ultra Thin Cylinder SDA12X20B
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 12 | 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).
Where the Airtac SDA Ultra Thin Cylinder SDA12X20B Is Used
PCB Ejector Pins
Provides the precise 56.5 N extension needed to push delicate printed circuit boards out of testing fixtures without damaging surface components.
Lab Dispenser Actuation
Drives a 20 mm stroke to meter exact micro-liter volumes of reagents in automated diagnostic equipment where axial space is highly restricted.
Small Part Sorting Gates
Uses the male M5x0.8 rod end to rapidly deflect lightweight plastic components down dedicated chutes on a high-speed assembly line.
Is the Airtac SDA Ultra Thin Cylinder SDA12X20B the Right Cylinder?
If your application requires less force, stepping down is not an option as this is the smallest available bore. Stepping up to the SDA16 increases your 0.5 MPa push force to 100.5 N. When ordering this configuration, confirm the 12 mm bore, 20 mm stroke, M5x0.8 port, male M5x0.8 rod thread, and the absence of a sensor magnet.
Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered. The fixed NBR bumper only decelerates the piston near the stroke end and does not function as a locking brake. If your setup must hold a vertical load without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short-body depth vs. a round-body cylinder
- ✓ Port/thread type (PT)
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
- ✓ Side load — avoid on a compact rod
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the short piston rod.
- check Very long strokes are unsuitable for the compact body.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDA Ultra Thin Cylinder SDA12X20B FAQ
This 12 mm bore double-acting cylinder provides a push force of 56.5 N and a pull force of 42.4 N at 0.5 MPa. At 0.7 MPa, the push force is 79.2 N. The theoretical maximum push force is 12 kgf at 1.0 MPa. It operates on filtered air between 0.15 and 1.0 MPa, with a speed range of 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot trigger AirTAC reed or electronic switches. Position sensing requires the -S variant. Additionally, end-stop deceleration relies on a fixed NBR bumper, which is not an adjustable air cushion.
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