Airtac SDA Ultra Thin Cylinder SDA20X20
The AirTAC SDA Ultra Thin Cylinder SDA20X20 is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm 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.
- BoreØ20 mm
- Stroke20 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 SDA20X20
The AirTAC SDA20X20 is a double-acting single-rod compact cylinder engineered for tight machinery footprints. It generates 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. The riveted unibody design merges the barrel, rear cover, piston, and rod to drastically reduce overall axial length where a conventional round-body unit cannot fit.
This 20 mm bore model features an 8 mm piston rod and an M5x0.8 air port. End-stop deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. This specific SKU ships without a piston magnet, so it cannot host magnetic reed or electronic switches; position sensing requires the -S variant.
Airtac SDA Ultra Thin Cylinder SDA20X20 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA20X20 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 SDA20X20
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 20 | 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 SDA20X20 Is Used
PCB Depaneling Router
Actuates a tooling gate on an electronics assembly line, fitting into a shallow subpanel where a standard profile cylinder would exceed the 20 mm depth allowance.
Blister Pack Sealer
Provides the 157.1 N push stroke to clamp heating platens together, with the fixed NBR bumper absorbing the rapid end-stop impact during continuous cycling.
Sorting Diverter Arm
Drives a lightweight pneumatic flap to route small parcels on a logistics belt, using the 8 mm rod to pivot the mechanism without requiring additional load guidance.
Is the Airtac SDA Ultra Thin Cylinder SDA20X20 the Right Cylinder?
When sizing this unit, compare its 157.1 N push at 0.5 MPa against adjacent bores: stepping down to the SDA16 yields 100.5 N, while stepping up to the SDA25 provides 245.4 N. To order, confirm the 20 mm bore, 20 mm stroke, M5x0.8 port, female M4x0.7 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 directional valve centers. The piston drifts under those conditions, as the fixed bumper only slows travel near the stroke endpoints rather than locking the rod. To suspend a load safely 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 SDA20X20 FAQ
At 0.5 MPa this 20 mm bore cylinder outputs 157.1 N push and 131.9 N pull. At 0.7 MPa it outputs 219.9 N push and 184.7 N pull. The theoretical maximum push is 32 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa and a speed range of 30-500 mm/s.
No, this specific SKU lacks the internal piston magnet. To use AirTAC reed or electronic switches in the body grooves, you must order the SDA20X20S variant. Additionally, end-of-stroke deceleration comes from a fixed NBR bumper, not an adjustable air cushion, so high-speed applications may need external shock absorption.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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