Airtac SDA Ultra Thin Cylinder SDA12X20BH
The AirTAC Airtac SDA Ultra Thin Cylinder SDA12X20BH 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 SDA12X20BH
The AirTAC SDA12X20BH is a double-acting single-rod compact cylinder engineered for tight axial spaces. It delivers a push force of 56.5 N and a pull force of 42.4 N at 0.5 MPa. This specific configuration includes a male M5x0.8 threaded piston rod for direct load coupling and an FKM (fluororubber) seal variant for enhanced thermal and oil resistance.
Its riveted assembly merges the barrel, rear cover, and piston to drastically reduce overall length compared to conventional round-body units. The 12 mm bore features a hard-anodized inner wall and relies on a fixed NBR bumper at each end to decelerate the stroke. Because this SKU lacks the -S magnet option, it cannot host magnetic position switches.
Airtac SDA Ultra Thin Cylinder SDA12X20BH Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA12X20BH |
|---|---|
| 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 SDA12X20BH
| 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 SDA12X20BH Is Used
PCB Edge Guiding
Provides precise lateral pressure on printed circuit boards during routing, utilizing the compact 20 mm stroke and FKM seals to resist flux residues.
Lab Dispenser Clamping
Secures small fluid vials in automated testing racks where the 56.5 N push force is sufficient and axial mounting depth is highly restricted.
Thin Panel Ejection
Pushes delicate electronic faceplates out of machining fixtures using the male M5x0.8 rod end without overstressing the component.
Is the Airtac SDA Ultra Thin Cylinder SDA12X20BH the Right Cylinder?
For sizing context, stepping up to the SDA16 increases the 0.5 MPa push output to 100.5 N, whereas this 12 mm bore provides a safe working load of roughly 34 N (about 60% of its 56.5 N capacity) and a vertical lift capability near 2.9 kg with a 2:1 safety margin. If your mechanism must maintain vertical position during air loss or valve centering, note that the piston will drift; an external rod lock or pilot-operated check valve is required for secure holding. When ordering, confirm the 20 mm stroke, M5x0.8 port, male M5x0.8 rod thread, and FKM seal composition.
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 SDA12X20BH FAQ
At 0.5 MPa, the push force is 56.5 N and the pull force is 42.4 N. At 0.7 MPa, the push force is 79.2 N and the pull force is 59.4 N. The theoretical maximum push force is 12 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa and a speed of 30-500 mm/s.
You cannot adjust the end-of-stroke damping; it uses a fixed NBR bumper rather than an adjustable air cushion, so you should slow the approach or add an external shock absorber for high-energy loads. Additionally, this specific SKU lacks a piston magnet, so it cannot support reed or electronic switches without switching to the -S variant.
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