Airtac SDA Ultra Thin Cylinder SDA20X25
The AirTAC SDA Ultra Thin Cylinder SDA20X25 is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 SDA20X25
The AirTAC SDA20X25 is a double-acting, single-rod compact cylinder engineered to deliver 157.1 N of push force at 0.5 MPa. Its riveted assembly merges the hard-anodized barrel, rear cover, and piston into an ultra-short unit, drastically reducing axial mounting depth where a conventional round-body actuator would be too long.
This specific SKU features an 8 mm piston rod and an M5x0.8 air port, utilizing a female M4x0.7 rod-end thread to couple with your payload. End-stop deceleration is handled strictly by fixed NBR bumpers rather than a field-adjustable air cushion, meaning operators should slow the approach or add an external shock absorber for high-energy cycles. Because this base model lacks the -S magnet option, it cannot host AirTAC reed or electronic switches for position sensing.
Airtac SDA Ultra Thin Cylinder SDA20X25 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA20X25 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 SDA20X25
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 SDA20X25 Is Used
PCB Depaneling Router
Provides the 157.1 N push at 0.5 MPa needed to clamp populated circuit boards securely within an automated routing fixture, saving valuable Z-axis height.
Blister Pack Sealing
Drives the upper heat platen of a small thermoforming station, using its 25 mm stroke to close the mold rapidly while the NBR bumpers absorb the final impact.
Parts Diverting Gate
Actuates a lightweight sorting flap on a conveyor line, delivering an 8 kg vertical lift margin to pivot the mechanism and redirect small plastic components.
Is the Airtac SDA Ultra Thin Cylinder SDA20X25 the Right Cylinder?
When sizing this 20 mm bore actuator, evaluate your force requirements carefully. Stepping down to the SDA16 reduces the footprint and yields 100.5 N of push at 0.5 MPa, while stepping up to the SDA25 increases the output to 245.4 N at the same pressure. To finalize your order, confirm the 25 mm stroke, the M5x0.8 port, the female M4x0.7 rod thread, and whether your circuit requires a male-threaded rod (B) or a sensor magnet (S). Keep in mind that a standard compact cylinder does not hold its position if air pressure drops or the valve is centered; the piston will drift, and the fixed bumper only decelerates it near the stroke end. For vertical or suspended loads that must remain secure 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 SDA20X25 FAQ
This double-acting cylinder generates 157.1 N of push and 131.9 N of pull at 0.5 MPa. At 0.7 MPa, the push increases to 219.9 N. The theoretical maximum push force is 32 kgf at the 1.0 MPa operating pressure limit.
This model uses fixed NBR bumpers at each end to decelerate the stroke, not an adjustable air cushion, so you should slow high-speed approaches externally. Additionally, this specific SKU lacks a piston magnet, meaning it cannot support AirTAC reed or electronic switches; you would need the -S variant for position sensing.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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