Airtac SDA Ultra Thin Cylinder SDA12X20S
The AirTAC Airtac SDA Ultra Thin Cylinder SDA12X20S 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 SDA12X20S
The AirTAC SDA12X20S 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 (about 60% of the 0.5 MPa push figure) and a vertical lift capacity near 2.9 kg with a 2:1 margin. The riveted unibody design significantly reduces axial mounting depth compared to conventional round-body units.
This 12 mm bore variant features a 6 mm piston rod, M5x0.8 air ports, and a female M3x0.5 rod-end thread. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable cushion. Equipped with the -S option, it includes a built-in piston magnet for position sensing via an AirTAC reed or electronic switch mounted in the body grooves.
Airtac SDA Ultra Thin Cylinder SDA12X20S Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA12X20S |
|---|---|
| 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 SDA12X20S
| 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 SDA12X20S Is Used
PCB Pick & Place
Drives short 20 mm vertical movements on a printed circuit board assembly station, utilizing the compact 12 mm body to minimize Z-axis height.
Lab Dispenser Actuation
Provides a 56.5 N push at 0.5 MPa to trigger a micro-fluidic valve on an automated chemical dispensing rig without overwhelming delicate components.
Small Part Ejection
Pushes lightweight plastic connectors out of an injection mold cavity, where the fixed NBR bumper safely absorbs the end stop within the 30-500 mm/s speed range.
Is the Airtac SDA Ultra Thin Cylinder SDA12X20S the Right Cylinder?
For sizing context, stepping up to the SDA16 increases the 0.5 MPa push force to 100.5 N, whereas this 12 mm bore sits at the smaller end of the range. When ordering, confirm the 20 mm stroke, M5x0.8 port, built-in magnet (S), and female M3x0.5 rod thread. Keep in mind that a standard double-acting cylinder drifts if air pressure is lost or the valve is centered, as the fixed bumper only decelerates the stroke end rather than locking the load; utilize an external rod lock or pilot-operated check valve if your application requires strict position holding.
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 SDA12X20S FAQ
At 0.5 MPa, this 12 mm bore cylinder provides 56.5 N push and 42.4 N pull. At 0.7 MPa, push is 79.2 N and pull is 59.4 N. The theoretical maximum push is 12 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa, with a speed range of 30-500 mm/s.
No, the SDA12X20S uses a fixed NBR bumper at each end to decelerate the piston. It is not an adjustable air cushion. For high kinetic energy or rapid cycling, you should add an external shock absorber or reduce the approach speed.
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