Airtac SDA Ultra Thin Cylinder SDA63X20
The AirTAC Airtac SDA Ultra Thin Cylinder SDA63X20 is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm bore and 20mm stroke, PT1/4 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
- BoreØ63 mm
- Stroke20 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM10×1.5 (F) / M18×1.5 (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 SDA63X20
The AirTAC SDA63X20 is a double-acting single-rod compact cylinder engineered to deliver a robust 1558.6 N push and 1401.5 N pull at 0.5 MPa. Utilizing a short riveted body design, it drastically reduces axial mounting depth compared to conventional round-body units, making it ideal for tight machine footprints. The hard-anodized bore ensures smooth, low-friction operation across the 30-500 mm/s speed range.
This specific configuration features a 20 mm stroke driven by a 20 mm piston rod with a female M10x1.5 thread. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, meaning external shock absorbers should be added for high-energy impacts. Because this SKU lacks the -S magnet option, it cannot host AirTAC reed or electronic switches for position sensing.
Airtac SDA Ultra Thin Cylinder SDA63X20 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA63X20 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 120 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SDA63X20
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 63 | 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 SDA63X20 Is Used
Injection Mold Ejection
Provides the 1558.6 N push force required to eject heavy plastic parts from molding machines, utilizing the 20 mm stroke to save valuable axial space behind the die plate.
Pallet Flap Folding
Drives heavy cardboard flaps down on automated packaging lines before strapping, where the fixed NBR bumper reliably absorbs the impact of the 63 mm bore at operating speed.
Press Sub-Assembly
Applies precise 1401.5 N retraction force to seat bearings or pins in light press applications, taking advantage of the hard-anodized bore for consistent repetitive cycling.
Is the Airtac SDA Ultra Thin Cylinder SDA63X20 the Right Cylinder?
When sizing this unit, evaluate your force requirements carefully. Stepping down, the SDA50 provides 981.7 N of push at 0.5 MPa, while stepping up to the SDA80 yields 2513.3 N at the same pressure. For the SDA63X20, the safe working load is approximately 935 N (60% of the 0.5 MPa figure), allowing a vertical lift of about 79.4 kg with a 2:1 safety margin. Confirm your ordering essentials: 63 mm bore, 20 mm stroke, PT1/4 port, female rod thread, and no magnet.
Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered. The fixed NBR bumper only decelerates the piston near the stroke end and does not function as a locking brake. If your application demands fail-safe load holding, you must integrate an external rod lock or a pilot-operated check valve into the pneumatic circuit.
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 SDA63X20 FAQ
At 0.5 MPa, the push force is 1558.6 N and the pull force is 1401.5 N. At 0.7 MPa, push is 2182.1 N and pull is 1962.2 N. The theoretical maximum push is 318 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
This specific SKU lacks the -S magnet, so it cannot support reed or electronic switches. Additionally, it uses a fixed NBR bumper at each end to decelerate the stroke, not an adjustable air cushion; you should slow the approach or add external shock absorbers for high-speed loads.
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