Airtac SDA Ultra Thin Cylinder SDA25X20
The AirTAC SDA Ultra Thin Cylinder SDA25X20 is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm 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.
- BoreØ25 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM5×0.8 (F) / M8×1.25 (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 SDA25X20
The AirTAC SDA25X20 is a double-acting single-rod compact cylinder engineered to deliver 245.4 N of push force and 206.2 N of pull force at 0.5 MPa. Its riveted assembly significantly reduces axial mounting depth compared to conventional round-body units, making it ideal for tight machine footprints. The hard-anodized aluminum bore ensures smooth operation across the 30-500 mm/s speed range.
This specific SKU features a 10 mm piston rod and an M5x0.8 air port, utilizing a female M5x0.8 rod-end thread for straightforward load coupling. It relies on a fixed NBR bumper at each end to decelerate the stroke end rather than an adjustable air cushion. Because this base model lacks the -S magnet option, it cannot host magnetic reed or electronic switches for position sensing.
Airtac SDA Ultra Thin Cylinder SDA25X20 Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA25X20 |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 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 SDA25X20
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 25 | 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 SDA25X20 Is Used
PCB Router Gating
Actuates a routing lane diverter on a printed circuit board assembly line, using the 20 mm stroke to shift gates rapidly within a dense electronics manufacturing cell.
Carton Flap Folding
Drives the short folding arm on a vertical form-fill-seal machine, pushing corrugated flaps into position at high cycling rates without consuming excessive axial depth.
Lab Dispenser Tipping
Tilts a reagent dispenser head in clinical diagnostic equipment, where the 245.4 N force at 0.5 MPa easily overcomes the mechanism's rotational resistance.
Is the Airtac SDA Ultra Thin Cylinder SDA25X20 the Right Cylinder?
When sizing this unit, consider stepping down to the SDA20, which provides 157.1 N of push at 0.5 MPa, or moving up to the SDA32, which yields 402.1 N at the same pressure. To finalize your order, confirm the 25 mm bore, 20 mm stroke, M5x0.8 port, female rod thread, and the absence of a piston magnet.
Keep in mind that a standard compact cylinder cannot hold a load if air pressure drops or the valve is centered; the piston will drift, and the fixed NBR bumper only decelerates near the stroke end without acting as a mechanical lock. If your application requires static holding without live pressure, you must 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 SDA25X20 FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245.4 N of push (extend) force and 206.2 N of pull (retract) force. When operating at 0.7 MPa, the push force increases to 343.6 N. The theoretical maximum push force is 50 kgf at the 1.0 MPa pressure limit.
It uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits; this is not an adjustable air cushion, so high-speed applications may require an external shock absorber. Additionally, this specific SKU lacks the -S magnet option, meaning it cannot support reed or electronic switches for position feedback.
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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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