Airtac SDA Ultra Thin Cylinder SDA20X45
The AirTAC Airtac SDA Ultra Thin Cylinder SDA20X45 is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 45mm 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
- Stroke45 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 SDA20X45
The AirTAC SDA20X45 is a double-acting single-rod compact cylinder delivering 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. Its riveted assembly joins the barrel, rear cover, piston, and rod into a very short axial package, saving valuable mounting depth where a longer round-body unit would fail to fit. The hard-anodized bore wall minimizes friction and wear.
This specific configuration features a 45 mm stroke and an 8 mm piston rod. It relies on a fixed NBR bumper at each end to decelerate the stroke end rather than an adjustable air cushion. Because this SKU lacks the -S magnet code, it cannot accept magnetic reed or electronic switches for position sensing.
Airtac SDA Ultra Thin Cylinder SDA20X45 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA20X45 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 45 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 SDA20X45
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×45 | 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 SDA20X45 Is Used
PCB Depaneling Router
Provides the 157.1 N push at 0.5 MPa required to clamp populated circuit boards securely during routing, utilizing the short 45 mm stroke to minimize machine footprint.
Carton Flap Folding
Actuates folding arms on a packaging line to tuck minor flaps before tape sealing, where the fixed NBR bumper adequately absorbs the impact at the end of the stroke.
Lab Dispenser Positioning
Moves a liquid dispensing nozzle precisely over microplate wells, taking advantage of the 8 mm rod and compact body length to fit inside tight analytical equipment.
Is the Airtac SDA Ultra Thin Cylinder SDA20X45 the Right Cylinder?
When sizing this actuator, stepping down to the SDA16 bore provides 100.5 N of push at 0.5 MPa, while stepping up to the SDA25 yields 245.4 N. Based on the 157.1 N output at 0.5 MPa, a safe working load is approximately 94 N (about 60 percent capacity), which translates to a vertical lift capability of roughly 8 kg with a 2:1 safety margin. Confirm your ordering essentials: 20 mm bore, 45 mm stroke, M5x0.8 port, female M4x0.7 rod thread, and no sensor magnet.
Keep in mind that a standard compact cylinder does not hold its position if air pressure drops or the directional valve is centered. The piston will drift, and the fixed bumper only decelerates the mass near the stroke end without acting as a lock. If your application must maintain a 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 SDA20X45 FAQ
This double-acting cylinder generates 157.1 N push and 131.9 N pull at 0.5 MPa, or 219.9 N push and 184.7 N pull at 0.7 MPa. The theoretical maximum push force is 32 kgf at 1.0 MPa. It operates on filtered air between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and supports speeds from 30 to 500 mm/s.
No, this model uses a fixed NBR bumper at each end to decelerate the stroke end, which is not field-adjustable. For high-energy cycles, you should slow the approach speed or add an external shock absorber. Additionally, this specific SKU lacks a piston magnet, so it cannot support reed or electronic switches; you would need the SDA20X45S variant for position sensing.
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