Airtac SDA Ultra Thin Cylinder SDA20X50
The AirTAC SDA Ultra Thin Cylinder SDA20X50 is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 50mm 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.
- BoreØ20 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM4×0.7 (F) / M6×1.0 (B)
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDA Ultra Thin Cylinder SDA20X50
The AirTAC SDA20X50 is a double-acting single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly keeps axial length minimal where round-body units fail to fit, yielding a push force of 157.1 N and a pull force of 131.9 N at 0.5 MPa. The hard-anodized 20 mm bore operates at speeds from 30-500 mm/s.
This specific SKU lacks a piston magnet and therefore cannot host sensing switches, though the body retains standard grooves for the -S variant. End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, meaning high-energy cycles may require external shock absorption. The 8 mm rod uses an M4x0.7 female thread and feeds through an M5x0.8 port.
Airtac SDA Ultra Thin Cylinder SDA20X50 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA20X50 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 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).
Theoretical Output Force (Ø20mm)
| 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.
Model Code: Airtac SDA Ultra Thin Cylinder SDA20X50
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 SDA20X50 Is Used
PCB Depaneling Ejector
Uses the 157.1 N extend force to push singulated circuit boards out of a routing fixture without damaging delicate traces.
Carton Flap Folder
Actuates a short mechanical arm to tuck minor flaps on small packaging lines where axial mounting space is severely restricted.
Lab Dispenser Valve
Cycles a 50 mm stroke to open and close a precision fluid nozzle for reagent dosing, benefiting from the hard-anodized bore wall.
Is the Airtac SDA Ultra Thin Cylinder SDA20X50 the Right Cylinder?
When sizing this 20 mm bore, 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. Confirm your ordering essentials: 20 mm bore, 50 mm stroke, M5x0.8 port, female rod thread, and no magnet.
Because this is a standard double-acting cylinder, it will not hold a load if air pressure drops or the valve centers; the piston drifts until the fixed bumper catches it. If your application demands position holding 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 SDA20X50 FAQ
At 0.5 MPa this cylinder pushes with 157.1 N and pulls with 131.9 N. At 0.7 MPa the push is 219.9 N and pull is 184.7 N. The theoretical maximum push is 32 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa and a proof pressure of 1.5 MPa.
No, this specific SKU does not include a piston magnet. To use reed or electronic switches, you must order the -S variant. Additionally, end stops are handled by a fixed NBR bumper, not an adjustable cushion, so external shock absorbers are recommended for high-speed operations.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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